-
General Relativity Explained simply & visually
Get MagellanTV here: https://try.magellantv.com/arvinash and get an exclusive offer for our viewers: an extended, month-long trial, FREE. MagellanTV has the largest and best collection of Science content anywhere, including Space, Physics, Technology, Nature, Mind and Body, and a growing collection of 4K. This new streaming service has 3000 great documentaries. Check out our personal recommendation and MagellanTV’s exclusive playlists: https://www.magellantv.com/genres/science-and-tech
PATREON:
https://patreon.com/arvinash
Quantum gravity videos:
https://youtu.be/S3Wtat5QNUA
https://youtu.be/NsUm9mNXrX4
3D gravity animation courtesy of: https://1ucasvb.tumblr.com/
Albert Einstein was ridiculed when he first published his theory. People thought it was too weird and radical to be rea...
published: 20 Jun 2020
-
What is General Relativity?
What is gravitation? Why are objects seemingly attracted to each other? What other consequences are brought about by Einstein's theory? All these answers in 14 minutes!
For more videos, subscribe to the YouTube channel : https://www.youtube.com/ScienceClicEN
And if you liked this video, you can share it on social networks !
To support me on Patreon : http://www.patreon.com/ScienceClic
or on Tipeee : http://tipeee.com/ScienceClic
Facebook Page : http://facebook.com/ScienceClic
Twitter : http://twitter.com/ScienceClic
Google+ : http://google.com/+ScienceClic
Alessandro Roussel,
For more info: http://www.alessandroroussel.com/en
_
To learn more :
https://en.wikipedia.org/wiki/General_relativity
https://en.wikipedia.org/wiki/Black_hole
published: 19 Feb 2020
-
Special Relativity: Crash Course Physics #42
So we've all heard of relativity, right? But... what is relativity? And how does it relate to light? And motion? In this episode of Crash Course Physics, Shini talks to us about perspective, observation, and how relativity is REALLY weird!
--
Produced in collaboration with PBS Digital Studios: http://youtube.com/pbsdigitalstudios
--
Want to find Crash Course elsewhere on the internet?
Facebook - http://www.facebook.com/YouTubeCrashC...
Twitter - http://www.twitter.com/TheCrashCourse
Tumblr - http://thecrashcourse.tumblr.com
Support CrashCourse on Patreon: http://www.patreon.com/crashcourse
CC Kids: http://www.youtube.com/crashcoursekids
published: 23 Feb 2017
-
General Relativity Explained in 7 Levels of Difficulty
Go to https://nebula.tv/minutephysics to get access to Nebula (where you can watch the extended version of this video), plus you'll get a 20% discount on an annual subscription.
This video covers the General theory of Relativity, developed by Albert Einstein, from basic simple levels (it's gravity, curved space) through to the concepts of how curved spacetime is represented by psuedo-Riemannian manifolds with Lorentzian signature (that is, special relativity and minkowski space are the local tangent space), how matter and energy are represented by an energy-momentum tensor, and how these two together obey the Einstein Field Equations. The solutions to the Einstein Field Equations (including the schwarzschild metric, kerr metric, freedman-lemaitre-robertson-walker metric, etc) represent gr...
published: 18 Feb 2021
-
The Maths of General Relativity (1/8) - Spacetime and Worldlines
In this series, we build together the theory of general relativity. This first video focuses on the notions of worldline, proper time, and coordinate systems.
For more videos, subscribe to the YouTube channel : https://www.youtube.com/ScienceClicEN
And if you liked this video, you can share it on social networks !
To support me on Patreon : http://www.patreon.com/ScienceClic
or on Tipeee : http://tipeee.com/ScienceClic
Facebook Page : http://facebook.com/ScienceClic
Twitter : http://twitter.com/ScienceClic
Instagram : http://instagram.com/ScienceClic
Alessandro Roussel,
For more info: http://www.alessandroroussel.com/en
published: 24 Nov 2020
-
General Relativity Lecture 1
(September 24, 2012) Leonard Susskind gives a broad introduction to general relativity, touching upon the equivalence principle.
This series is the fourth installment of a six-quarter series that explore the foundations of modern physics. In this quarter, Leonard Susskind focuses on Einstein's General Theory of Relativity.
Stanford University:
http://www.stanford.edu/
Stanford Continuing Studies Program:
http://csp.stanford.edu/
Stanford University Channel on YouTube:
http://www.youtube.com/stanford
published: 17 Oct 2012
-
How we know that Einstein's General Relativity can't be quite right
Einstein's theory of General Relativity tells us that gravity is caused by the curvature of space and time. It is a remarkable theory that has been confirmed by countless observations, such as gravitational lensing, light deflection on the sun, redshift in the gravitational potential, black holes and their shadows, and gravitational waves.
However, we already know that General Relativity cannot be quite right because it does not fit together with another well-confirmed theory that is quantum mechanics. To resolve this tension, physicists think that we need a theory of quantum gravity.
In this video I explain the three key reasons why physicists think that we need a theory of quantum gravity.
Support me on Patreon: https://www.patreon.com/Sabine
published: 17 Aug 2019
-
Time Dilation - Einstein's Theory Of Relativity Explained!
Time dilation and Einstein’s theory of relativity go hand in hand. Albert Einstein is the most popular physicist, as he formulated the theory of relativity, which gave the Energy mass equivalence formula and is directly related to time dilation. But what is time dilation? Time dilation and space time are interrelated. Einstein made one of the most important contributions to physics and had the concept of space time explained. A simple explanation of space time is that it is a mathematical model that fuses the three dimensions of space and the one dimension of time into a single four-dimensional continuum. But it is very important to understand that the general theory of relativity and the special theory of relativity are different. In this short animated video, we give a simple explanation...
published: 13 Apr 2018
-
Do you really understand Einstein’s theory of relativity? - BBC News
Almost everyone has heard of Albert Einstein, the Nobel prize-winning genius whose theories overturned centuries of scientific thought. But how much do you understand the work that made him really famous – his theory of general relativity?
Here, we talk you through the science that changed the way we understand the universe.
Video production: Kako Abraham and Camilla Costa
Editor: Carol Olona
Voice: Claire Press
Please subscribe HERE http://bit.ly/1rbfUog
published: 29 May 2019
-
WSU: Special Relativity with Brian Greene
Physicist Brian Greene takes you on a visual, conceptual, and mathematical exploration of Einstein’s spectacular insights into space, time, and energy. In just 11.5 hours, using nothing more advanced than high school algebra, journey from Einstein’s earliest musings on the speed of light to his startling realization that time can tick at different rates to his revolutionary discovery of the world’s most famous formula, E = mc2.
This is a more in-depth and mathematical version of the WSU Master Class “Space, Time, and Einstein.” https://youtu.be/CKJuC5CUMgU
#WorldSciU
Watch the class in full or view in segments via the chapter links below.
Experience the associated free online course at World Science U: https://worldscienceu.com/courses/special-relativity-world-science-u/
0:00...
published: 01 Sep 2020
14:04
General Relativity Explained simply & visually
Get MagellanTV here: https://try.magellantv.com/arvinash and get an exclusive offer for our viewers: an extended, month-long trial, FREE. MagellanTV has the la...
Get MagellanTV here: https://try.magellantv.com/arvinash and get an exclusive offer for our viewers: an extended, month-long trial, FREE. MagellanTV has the largest and best collection of Science content anywhere, including Space, Physics, Technology, Nature, Mind and Body, and a growing collection of 4K. This new streaming service has 3000 great documentaries. Check out our personal recommendation and MagellanTV’s exclusive playlists: https://www.magellantv.com/genres/science-and-tech
PATREON:
https://patreon.com/arvinash
Quantum gravity videos:
https://youtu.be/S3Wtat5QNUA
https://youtu.be/NsUm9mNXrX4
3D gravity animation courtesy of: https://1ucasvb.tumblr.com/
Albert Einstein was ridiculed when he first published his theory. People thought it was too weird and radical to be real. Einstein wasn’t satisfied with his theory either, because the theory did not apply if Gravity was present or if the observer was accelerating. One day, while observing a window washer on a ladder near his patent office, he had a thought experiments.
He imagined what would happen if the worker were to fall. He put himself in the window washer’s perspective, and imagined what he would experience as he was falling. He realized that if he was falling, gravity would be the only force acting on him. He would be accelerating towards the ground, but since the ground would not be pushing up on his body, he would feel no weight. And this would be no different than being weightless in space.
In a way gravity and acceleration were different ways to describe the same thing. The way to connect gravity in the theory of relativity was through the idea of acceleration, and this became the basis of general relativity.
Einstein imagined being in a room with no windows, and a bathroom scale. It would weigh 80 Kgs, What if the room was on a space ship accelerating in an upward direction at 9.8 m/s/s. He would feel the same weight. There would be no difference
He imagined what would happen if he took a flashlight and pointed it from one side of the room to the other, as the space ship was accelerating upwards. If he had a ruler, he could measure the height of the light on the other side of the room. He realized that the height measured on the wall would be lower than the source of the light, because the floor of the room would be rushing upwards at ever faster speeds, as the light was propagating across the room. The light beam would appear to curve downward.
However, If you were on earth, and you measured the two heights, you may think that there should be no difference. That light should go straight to the other side of the room. Einstein thought it can’t be because it would violate the principle of equivalence. Acceleration of the room on a space should be no different than the room under the influence of gravity on earth. He realized that this meant light must bend in the presence of a gravitational field.
But light should be going on the shortest path. Then he realized, maybe the shortest path between two points is not a straight line but a curved line near gravity.
This was the key insight that Einstein had about gravity. But in order to express this mathematically, it required very complicated mathematics that even a genius like Einstein could not easily figure out. He contacted an old buddy from his college days, mathematician Marcel Grossman.
It’s important to note that the trampoline analogy you normally see on TV shows and youtube videos like this is a 2D plane used for visualization purposes only, but it is really in 3D.
In order for this theory to really be taken seriously, it had to make a prediction that could be tested, which was confirmed by the fact that it explained Mercury’s orbit which had been a mystery for decades because it had a precession. General relativity predicted exactly the precession that Mercury actually has.
But many skeptics still remained. The most fool proof confirmation came 4 years after he published it,when a team led English Astronomer, Arthur Eddington. in 1919, photographed stars near the sun during a total solar eclipse. He found that light passed near the sun was bent by the curvature of space due to its gravity. This is the moment Einstein became a celebrity.
#generalrelativity
#einstein
Why is this not just a distortion of space but also of time?...because special relativity says that light always moves at the same speed regardless of perspective or reference frame. This means that light will have the same speed in an accelerating reference frame as it will in a resting reference frame. But since the distance traveled by the beam of light in a gravitational field is longer due the curving of space, in order for the speed of light to remain constant, time itself must pass slower in the gravitational field relative to time in empty space.
General relativity does not answer everything. Although it tells us how gravity works, it doesn’t really tell us what exactly it is.
https://wn.com/General_Relativity_Explained_Simply_Visually
Get MagellanTV here: https://try.magellantv.com/arvinash and get an exclusive offer for our viewers: an extended, month-long trial, FREE. MagellanTV has the largest and best collection of Science content anywhere, including Space, Physics, Technology, Nature, Mind and Body, and a growing collection of 4K. This new streaming service has 3000 great documentaries. Check out our personal recommendation and MagellanTV’s exclusive playlists: https://www.magellantv.com/genres/science-and-tech
PATREON:
https://patreon.com/arvinash
Quantum gravity videos:
https://youtu.be/S3Wtat5QNUA
https://youtu.be/NsUm9mNXrX4
3D gravity animation courtesy of: https://1ucasvb.tumblr.com/
Albert Einstein was ridiculed when he first published his theory. People thought it was too weird and radical to be real. Einstein wasn’t satisfied with his theory either, because the theory did not apply if Gravity was present or if the observer was accelerating. One day, while observing a window washer on a ladder near his patent office, he had a thought experiments.
He imagined what would happen if the worker were to fall. He put himself in the window washer’s perspective, and imagined what he would experience as he was falling. He realized that if he was falling, gravity would be the only force acting on him. He would be accelerating towards the ground, but since the ground would not be pushing up on his body, he would feel no weight. And this would be no different than being weightless in space.
In a way gravity and acceleration were different ways to describe the same thing. The way to connect gravity in the theory of relativity was through the idea of acceleration, and this became the basis of general relativity.
Einstein imagined being in a room with no windows, and a bathroom scale. It would weigh 80 Kgs, What if the room was on a space ship accelerating in an upward direction at 9.8 m/s/s. He would feel the same weight. There would be no difference
He imagined what would happen if he took a flashlight and pointed it from one side of the room to the other, as the space ship was accelerating upwards. If he had a ruler, he could measure the height of the light on the other side of the room. He realized that the height measured on the wall would be lower than the source of the light, because the floor of the room would be rushing upwards at ever faster speeds, as the light was propagating across the room. The light beam would appear to curve downward.
However, If you were on earth, and you measured the two heights, you may think that there should be no difference. That light should go straight to the other side of the room. Einstein thought it can’t be because it would violate the principle of equivalence. Acceleration of the room on a space should be no different than the room under the influence of gravity on earth. He realized that this meant light must bend in the presence of a gravitational field.
But light should be going on the shortest path. Then he realized, maybe the shortest path between two points is not a straight line but a curved line near gravity.
This was the key insight that Einstein had about gravity. But in order to express this mathematically, it required very complicated mathematics that even a genius like Einstein could not easily figure out. He contacted an old buddy from his college days, mathematician Marcel Grossman.
It’s important to note that the trampoline analogy you normally see on TV shows and youtube videos like this is a 2D plane used for visualization purposes only, but it is really in 3D.
In order for this theory to really be taken seriously, it had to make a prediction that could be tested, which was confirmed by the fact that it explained Mercury’s orbit which had been a mystery for decades because it had a precession. General relativity predicted exactly the precession that Mercury actually has.
But many skeptics still remained. The most fool proof confirmation came 4 years after he published it,when a team led English Astronomer, Arthur Eddington. in 1919, photographed stars near the sun during a total solar eclipse. He found that light passed near the sun was bent by the curvature of space due to its gravity. This is the moment Einstein became a celebrity.
#generalrelativity
#einstein
Why is this not just a distortion of space but also of time?...because special relativity says that light always moves at the same speed regardless of perspective or reference frame. This means that light will have the same speed in an accelerating reference frame as it will in a resting reference frame. But since the distance traveled by the beam of light in a gravitational field is longer due the curving of space, in order for the speed of light to remain constant, time itself must pass slower in the gravitational field relative to time in empty space.
General relativity does not answer everything. Although it tells us how gravity works, it doesn’t really tell us what exactly it is.
- published: 20 Jun 2020
- views: 5711360
13:43
What is General Relativity?
What is gravitation? Why are objects seemingly attracted to each other? What other consequences are brought about by Einstein's theory? All these answers in 14 ...
What is gravitation? Why are objects seemingly attracted to each other? What other consequences are brought about by Einstein's theory? All these answers in 14 minutes!
For more videos, subscribe to the YouTube channel : https://www.youtube.com/ScienceClicEN
And if you liked this video, you can share it on social networks !
To support me on Patreon : http://www.patreon.com/ScienceClic
or on Tipeee : http://tipeee.com/ScienceClic
Facebook Page : http://facebook.com/ScienceClic
Twitter : http://twitter.com/ScienceClic
Google+ : http://google.com/+ScienceClic
Alessandro Roussel,
For more info: http://www.alessandroroussel.com/en
_
To learn more :
https://en.wikipedia.org/wiki/General_relativity
https://en.wikipedia.org/wiki/Black_hole
https://wn.com/What_Is_General_Relativity
What is gravitation? Why are objects seemingly attracted to each other? What other consequences are brought about by Einstein's theory? All these answers in 14 minutes!
For more videos, subscribe to the YouTube channel : https://www.youtube.com/ScienceClicEN
And if you liked this video, you can share it on social networks !
To support me on Patreon : http://www.patreon.com/ScienceClic
or on Tipeee : http://tipeee.com/ScienceClic
Facebook Page : http://facebook.com/ScienceClic
Twitter : http://twitter.com/ScienceClic
Google+ : http://google.com/+ScienceClic
Alessandro Roussel,
For more info: http://www.alessandroroussel.com/en
_
To learn more :
https://en.wikipedia.org/wiki/General_relativity
https://en.wikipedia.org/wiki/Black_hole
- published: 19 Feb 2020
- views: 614620
8:59
Special Relativity: Crash Course Physics #42
So we've all heard of relativity, right? But... what is relativity? And how does it relate to light? And motion? In this episode of Crash Course Physics, Shini ...
So we've all heard of relativity, right? But... what is relativity? And how does it relate to light? And motion? In this episode of Crash Course Physics, Shini talks to us about perspective, observation, and how relativity is REALLY weird!
--
Produced in collaboration with PBS Digital Studios: http://youtube.com/pbsdigitalstudios
--
Want to find Crash Course elsewhere on the internet?
Facebook - http://www.facebook.com/YouTubeCrashC...
Twitter - http://www.twitter.com/TheCrashCourse
Tumblr - http://thecrashcourse.tumblr.com
Support CrashCourse on Patreon: http://www.patreon.com/crashcourse
CC Kids: http://www.youtube.com/crashcoursekids
https://wn.com/Special_Relativity_Crash_Course_Physics_42
So we've all heard of relativity, right? But... what is relativity? And how does it relate to light? And motion? In this episode of Crash Course Physics, Shini talks to us about perspective, observation, and how relativity is REALLY weird!
--
Produced in collaboration with PBS Digital Studios: http://youtube.com/pbsdigitalstudios
--
Want to find Crash Course elsewhere on the internet?
Facebook - http://www.facebook.com/YouTubeCrashC...
Twitter - http://www.twitter.com/TheCrashCourse
Tumblr - http://thecrashcourse.tumblr.com
Support CrashCourse on Patreon: http://www.patreon.com/crashcourse
CC Kids: http://www.youtube.com/crashcoursekids
- published: 23 Feb 2017
- views: 1192194
6:09
General Relativity Explained in 7 Levels of Difficulty
Go to https://nebula.tv/minutephysics to get access to Nebula (where you can watch the extended version of this video), plus you'll get a 20% discount on an ann...
Go to https://nebula.tv/minutephysics to get access to Nebula (where you can watch the extended version of this video), plus you'll get a 20% discount on an annual subscription.
This video covers the General theory of Relativity, developed by
Albert Einstein, from basic simple levels (it's gravity, curved space) through to the concepts of how curved spacetime is represented by psuedo-Riemannian manifolds with Lorentzian signature (that is, special relativity and minkowski space are the local tangent space), how matter and energy are represented by an energy-momentum tensor, and how these two together obey the Einstein Field Equations. The solutions to the Einstein Field Equations (including the schwarzschild metric, kerr metric, freedman-lemaitre-robertson-walker metric, etc) represent gravity around massive objects like the sun, earth, and black holes, but also the history and expansion and future evolution of the cosmos. The universe on a large scale is described by general relativity - on a small scale, quantum mechanics. And where they meet... there's still work to be done.
REFERENCES
Wald's textbook - General Relativity
Hartle's textbook - Gravity: An Introduction to Einstein's General Relativity
Carlo Rovelli History of Quantum Gravity: https://cds.cern.ch/record/442809/files/0006061.pdf
Leon Rosenfeld 1930 paper on quantum gravity: http://www.edoc.mpg.de/438547
Kerr Metric Solution - https://en.wikipedia.org/wiki/Eddington%E2%80%93Finkelstein_coordinates
Schwarzschild Metric - https://en.wikipedia.org/wiki/Schwarzschild_metric
Eddington-Finkelstein Coordinates - https://en.wikipedia.org/wiki/Eddington%E2%80%93Finkelstein_coordinates
Support MinutePhysics on Patreon! http://www.patreon.com/minutephysics
Link to Patreon Supporters: http://www.minutephysics.com/supporters/
MinutePhysics is on twitter - @minutephysics
And facebook - http://facebook.com/minutephysics
And Google+ (does anyone use this any more?) - http://bit.ly/qzEwc6
Minute Physics provides an energetic and entertaining view of old and new problems in physics -- all in a minute!
Created by Henry Reich
https://wn.com/General_Relativity_Explained_In_7_Levels_Of_Difficulty
Go to https://nebula.tv/minutephysics to get access to Nebula (where you can watch the extended version of this video), plus you'll get a 20% discount on an annual subscription.
This video covers the General theory of Relativity, developed by
Albert Einstein, from basic simple levels (it's gravity, curved space) through to the concepts of how curved spacetime is represented by psuedo-Riemannian manifolds with Lorentzian signature (that is, special relativity and minkowski space are the local tangent space), how matter and energy are represented by an energy-momentum tensor, and how these two together obey the Einstein Field Equations. The solutions to the Einstein Field Equations (including the schwarzschild metric, kerr metric, freedman-lemaitre-robertson-walker metric, etc) represent gravity around massive objects like the sun, earth, and black holes, but also the history and expansion and future evolution of the cosmos. The universe on a large scale is described by general relativity - on a small scale, quantum mechanics. And where they meet... there's still work to be done.
REFERENCES
Wald's textbook - General Relativity
Hartle's textbook - Gravity: An Introduction to Einstein's General Relativity
Carlo Rovelli History of Quantum Gravity: https://cds.cern.ch/record/442809/files/0006061.pdf
Leon Rosenfeld 1930 paper on quantum gravity: http://www.edoc.mpg.de/438547
Kerr Metric Solution - https://en.wikipedia.org/wiki/Eddington%E2%80%93Finkelstein_coordinates
Schwarzschild Metric - https://en.wikipedia.org/wiki/Schwarzschild_metric
Eddington-Finkelstein Coordinates - https://en.wikipedia.org/wiki/Eddington%E2%80%93Finkelstein_coordinates
Support MinutePhysics on Patreon! http://www.patreon.com/minutephysics
Link to Patreon Supporters: http://www.minutephysics.com/supporters/
MinutePhysics is on twitter - @minutephysics
And facebook - http://facebook.com/minutephysics
And Google+ (does anyone use this any more?) - http://bit.ly/qzEwc6
Minute Physics provides an energetic and entertaining view of old and new problems in physics -- all in a minute!
Created by Henry Reich
- published: 18 Feb 2021
- views: 1538542
6:35
The Maths of General Relativity (1/8) - Spacetime and Worldlines
In this series, we build together the theory of general relativity. This first video focuses on the notions of worldline, proper time, and coordinate systems.
...
In this series, we build together the theory of general relativity. This first video focuses on the notions of worldline, proper time, and coordinate systems.
For more videos, subscribe to the YouTube channel : https://www.youtube.com/ScienceClicEN
And if you liked this video, you can share it on social networks !
To support me on Patreon : http://www.patreon.com/ScienceClic
or on Tipeee : http://tipeee.com/ScienceClic
Facebook Page : http://facebook.com/ScienceClic
Twitter : http://twitter.com/ScienceClic
Instagram : http://instagram.com/ScienceClic
Alessandro Roussel,
For more info: http://www.alessandroroussel.com/en
https://wn.com/The_Maths_Of_General_Relativity_(1_8)_Spacetime_And_Worldlines
In this series, we build together the theory of general relativity. This first video focuses on the notions of worldline, proper time, and coordinate systems.
For more videos, subscribe to the YouTube channel : https://www.youtube.com/ScienceClicEN
And if you liked this video, you can share it on social networks !
To support me on Patreon : http://www.patreon.com/ScienceClic
or on Tipeee : http://tipeee.com/ScienceClic
Facebook Page : http://facebook.com/ScienceClic
Twitter : http://twitter.com/ScienceClic
Instagram : http://instagram.com/ScienceClic
Alessandro Roussel,
For more info: http://www.alessandroroussel.com/en
- published: 24 Nov 2020
- views: 307119
1:49:28
General Relativity Lecture 1
(September 24, 2012) Leonard Susskind gives a broad introduction to general relativity, touching upon the equivalence principle.
This series is the fourth inst...
(September 24, 2012) Leonard Susskind gives a broad introduction to general relativity, touching upon the equivalence principle.
This series is the fourth installment of a six-quarter series that explore the foundations of modern physics. In this quarter, Leonard Susskind focuses on Einstein's General Theory of Relativity.
Stanford University:
http://www.stanford.edu/
Stanford Continuing Studies Program:
http://csp.stanford.edu/
Stanford University Channel on YouTube:
http://www.youtube.com/stanford
https://wn.com/General_Relativity_Lecture_1
(September 24, 2012) Leonard Susskind gives a broad introduction to general relativity, touching upon the equivalence principle.
This series is the fourth installment of a six-quarter series that explore the foundations of modern physics. In this quarter, Leonard Susskind focuses on Einstein's General Theory of Relativity.
Stanford University:
http://www.stanford.edu/
Stanford Continuing Studies Program:
http://csp.stanford.edu/
Stanford University Channel on YouTube:
http://www.youtube.com/stanford
- published: 17 Oct 2012
- views: 3907588
5:28
How we know that Einstein's General Relativity can't be quite right
Einstein's theory of General Relativity tells us that gravity is caused by the curvature of space and time. It is a remarkable theory that has been confirmed by...
Einstein's theory of General Relativity tells us that gravity is caused by the curvature of space and time. It is a remarkable theory that has been confirmed by countless observations, such as gravitational lensing, light deflection on the sun, redshift in the gravitational potential, black holes and their shadows, and gravitational waves.
However, we already know that General Relativity cannot be quite right because it does not fit together with another well-confirmed theory that is quantum mechanics. To resolve this tension, physicists think that we need a theory of quantum gravity.
In this video I explain the three key reasons why physicists think that we need a theory of quantum gravity.
Support me on Patreon: https://www.patreon.com/Sabine
https://wn.com/How_We_Know_That_Einstein's_General_Relativity_Can't_Be_Quite_Right
Einstein's theory of General Relativity tells us that gravity is caused by the curvature of space and time. It is a remarkable theory that has been confirmed by countless observations, such as gravitational lensing, light deflection on the sun, redshift in the gravitational potential, black holes and their shadows, and gravitational waves.
However, we already know that General Relativity cannot be quite right because it does not fit together with another well-confirmed theory that is quantum mechanics. To resolve this tension, physicists think that we need a theory of quantum gravity.
In this video I explain the three key reasons why physicists think that we need a theory of quantum gravity.
Support me on Patreon: https://www.patreon.com/Sabine
- published: 17 Aug 2019
- views: 2339502
8:06
Time Dilation - Einstein's Theory Of Relativity Explained!
Time dilation and Einstein’s theory of relativity go hand in hand.
Albert Einstein is the most popular physicist, as he formulated the theory of relativity, whi...
Time dilation and Einstein’s theory of relativity go hand in hand.
Albert Einstein is the most popular physicist, as he formulated the theory of relativity, which gave the Energy mass equivalence formula and is directly related to time dilation. But what is time dilation? Time dilation and space time are interrelated. Einstein made one of the most important contributions to physics and had the concept of space time explained. A simple explanation of space time is that it is a mathematical model that fuses the three dimensions of space and the one dimension of time into a single four-dimensional continuum. But it is very important to understand that the general theory of relativity and the special theory of relativity are different. In this short animated video, we give a simple explanation of time dilation and Einstein’s theory of relativity and also explain how time slows down in a moving vehicle!
#science #animation #timedilation #TheoryofRelativity
References:
https://faraday.physics.utoronto.ca/PVB/Harrison/GenRel/TimeDilation.html
http://newt.phys.unsw.edu.au/einsteinlight/jw/module4_time_dilation.htm
https://web.pa.msu.edu/courses/2000fall/PHY232/lectures/relativity/dilation.html
http://www.physics.nyu.edu/~ts2/Animation/Time_dilation.html
Original Article Link: https://www.scienceabc.com/nature/universe/time-dilation-why-does-gravity-slow-down-the-flow-of-time.html
If you wish to buy/license this video, please write to us at admin@scienceabc.com.
Voice Over Artist: John Staughton ( https://www.fiverr.com/jswildwood )
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https://wn.com/Time_Dilation_Einstein's_Theory_Of_Relativity_Explained
Time dilation and Einstein’s theory of relativity go hand in hand.
Albert Einstein is the most popular physicist, as he formulated the theory of relativity, which gave the Energy mass equivalence formula and is directly related to time dilation. But what is time dilation? Time dilation and space time are interrelated. Einstein made one of the most important contributions to physics and had the concept of space time explained. A simple explanation of space time is that it is a mathematical model that fuses the three dimensions of space and the one dimension of time into a single four-dimensional continuum. But it is very important to understand that the general theory of relativity and the special theory of relativity are different. In this short animated video, we give a simple explanation of time dilation and Einstein’s theory of relativity and also explain how time slows down in a moving vehicle!
#science #animation #timedilation #TheoryofRelativity
References:
https://faraday.physics.utoronto.ca/PVB/Harrison/GenRel/TimeDilation.html
http://newt.phys.unsw.edu.au/einsteinlight/jw/module4_time_dilation.htm
https://web.pa.msu.edu/courses/2000fall/PHY232/lectures/relativity/dilation.html
http://www.physics.nyu.edu/~ts2/Animation/Time_dilation.html
Original Article Link: https://www.scienceabc.com/nature/universe/time-dilation-why-does-gravity-slow-down-the-flow-of-time.html
If you wish to buy/license this video, please write to us at admin@scienceabc.com.
Voice Over Artist: John Staughton ( https://www.fiverr.com/jswildwood )
SUBSCRIBE to get more such science videos!
https://www.youtube.com/channel/UCcN3IuIAR6Fn74FWMQf6lFA?sub_confirmation=1
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- published: 13 Apr 2018
- views: 8242351
3:44
Do you really understand Einstein’s theory of relativity? - BBC News
Almost everyone has heard of
Albert Einstein, the Nobel prize-winning genius whose theories overturned centuries of scientific thought. But how much do you unde...
Almost everyone has heard of
Albert Einstein, the Nobel prize-winning genius whose theories overturned centuries of scientific thought. But how much do you understand the work that made him really famous – his theory of general relativity?
Here, we talk you through the science that changed the way we understand the universe.
Video production: Kako Abraham and Camilla Costa
Editor: Carol Olona
Voice: Claire Press
Please subscribe HERE http://bit.ly/1rbfUog
https://wn.com/Do_You_Really_Understand_Einstein’S_Theory_Of_Relativity_BBC_News
Almost everyone has heard of
Albert Einstein, the Nobel prize-winning genius whose theories overturned centuries of scientific thought. But how much do you understand the work that made him really famous – his theory of general relativity?
Here, we talk you through the science that changed the way we understand the universe.
Video production: Kako Abraham and Camilla Costa
Editor: Carol Olona
Voice: Claire Press
Please subscribe HERE http://bit.ly/1rbfUog
- published: 29 May 2019
- views: 595527
11:29:00
WSU: Special Relativity with Brian Greene
Physicist Brian Greene takes you on a visual, conceptual, and mathematical exploration of Einstein’s spectacular insights into space, time, and energy. In just ...
Physicist Brian Greene takes you on a visual, conceptual, and mathematical exploration of Einstein’s spectacular insights into space, time, and energy. In just 11.5 hours, using nothing more advanced than high school algebra, journey from Einstein’s earliest musings on the speed of light to his startling realization that time can tick at different rates to his revolutionary discovery of the world’s most famous formula, E = mc2.
This is a more in-depth and mathematical version of the WSU Master Class “Space, Time, and Einstein.” https://youtu.be/CKJuC5CUMgU
#WorldSciU
Watch the class in full or view in segments via the chapter links below.
Experience the associated free online course at World Science U: https://worldscienceu.com/courses/special-relativity-world-science-u/
0:00 - Introduction
01:43 - Scale
05:46 - Speed
18:19 - The Speed of Light
27:39 - Units
33:28 - The Mathematics of Speed
44:24 - Relativity of Simultaneity
54:25 - Pitfalls: Relativity of Simultaneity
1:03:32 - Calculating the Time Difference
1:18:42 - Time in Motion
1:28:48 - How Fast Does Time Slow?
1:46:32 - The Mathematics of Slow Time
1:57:11 - Time Dilation Examples
2:10:51 - Time Dilation: Experimental Evidence
2:19:58 - The Reality of Past, Present, and Future
2:34:01 - Time Dilation: Intuitive Explanation
2:37:57 - Motion's Effect On Space
2:55:11 - Motion's Effect On Space: Mathematical Form
3:00:47 - Length Contraction: Travel of Proxima Centauri
3:07:46 - Length Contraction: Disintegrating Muons
3:12:00 - Length Contraction: Distant Spaceflight
3:18:54 - Length Contraction: Horizontal Light Clock In Motion
3:27:17 - Coordinates For Space
3:36:37 - Coordinates For Space: Rotation of Coordinate Frames
3:48:36 - Coordinates For Space: Translation of Coordinate Frames
3:53:10 - Coordinates for Time
4:07:12 - Coordinates in Motion
4:26:08 - Clocks in Motion: Examples
4:35:02 - Clocks in Motion: Length Expansion From Asynchronous Clocks
4:38:42 - Clocks in Motion: Bicycle Wheels
4:45:01 - Clocks in Motion: Temporal Order
4:54:35 - Clocks in Motion: How Observers Say the Other's Clock Runs Slow?
5:08:50 - The Lorentz Transformation
5:16:52 - The Lorentz Transformation: Relating Time Coordinates
5:26:10 - The Lorentz Transformation: Generalizations
5:33:18 - The Lorentz Transformation: The Big Picture Summary
5:47:37 - Lorentz Transformation: Moving Light Clock
5:54:39 - Lorentz Transformation: Future Baseball
6:02:35 - Lorentz Transformation: Speed of Light in a Moving Frame
6:08:43 - Lorentz Transformation: Sprinter
6:10:44 - Combining Velocities
6:17:46 - Combining Velocities: 3-Dimensions
6:27:45 - Combining Velocities: Example in 1D
6:30:23 - Combining Velocities: Example in 3D
6:36:34 - Spacetime Diagrams
6:50:35 - Spacetime Diagrams: Two Observers in Relative Motion
7:01:16 - Spacetime Diagrams: Essential Features
7:11:42 - Spacetime Diagrams: Demonstrations
7:15:23 - Lorentz Transformation: As An Exotic Rotation
7:27:26 - Reality of Past, Present, and Future: Mathematical Details
7:39:00 - Invariants
7:43:55 - Invariants: Spacetime Distance
7:54:25 - Invariants: Examples
7:59:19 - Cause and Effect: A Spacetime Invariant
8:12:40 - Cause and Effect: Same Place, Same Time
8:22:37 - Intuition and Time Dilation: Mathematical Approach
8:29:46 - The Pole in the Barn Paradox
8:43:51 - The Pole in the Barn: Quantitative Details
9:04:43 - The Pole in the Barn: Spacetime Diagrams
9:08:25 - Pole in the Barn: Lock the Doors
9:20:50 - The Twin Paradox
9:29:28 - The Twin Paradox: Without Acceleration
9:46:34 - The Twin Paradox: Spacetime Diagrams
9:53:12 - Twin Paradox: The Twins Communicate
10:06:34 - The Relativistic Doppler Effect
10:19:00 - Twin Paradox: The Twins Communicate Quantitative
10:30:17 - Implications of Mass
10:40:06 - Force and Energy
11:00:12 - Force and Energy: Relativistic Work and Kinetic Energy
11:07:24 - E=MC2
11:26:28 - Course Recap
Official Site: https://www.worldscienceu.com
Twitter: https://twitter.com/WorldScienceU
Facebook: https://www.facebook.com/worldscienceu
Instagram: https://www.instagram.com/worldscienceu/
https://wn.com/Wsu_Special_Relativity_With_Brian_Greene
Physicist Brian Greene takes you on a visual, conceptual, and mathematical exploration of Einstein’s spectacular insights into space, time, and energy. In just 11.5 hours, using nothing more advanced than high school algebra, journey from Einstein’s earliest musings on the speed of light to his startling realization that time can tick at different rates to his revolutionary discovery of the world’s most famous formula, E = mc2.
This is a more in-depth and mathematical version of the WSU Master Class “Space, Time, and Einstein.” https://youtu.be/CKJuC5CUMgU
#WorldSciU
Watch the class in full or view in segments via the chapter links below.
Experience the associated free online course at World Science U: https://worldscienceu.com/courses/special-relativity-world-science-u/
0:00 - Introduction
01:43 - Scale
05:46 - Speed
18:19 - The Speed of Light
27:39 - Units
33:28 - The Mathematics of Speed
44:24 - Relativity of Simultaneity
54:25 - Pitfalls: Relativity of Simultaneity
1:03:32 - Calculating the Time Difference
1:18:42 - Time in Motion
1:28:48 - How Fast Does Time Slow?
1:46:32 - The Mathematics of Slow Time
1:57:11 - Time Dilation Examples
2:10:51 - Time Dilation: Experimental Evidence
2:19:58 - The Reality of Past, Present, and Future
2:34:01 - Time Dilation: Intuitive Explanation
2:37:57 - Motion's Effect On Space
2:55:11 - Motion's Effect On Space: Mathematical Form
3:00:47 - Length Contraction: Travel of Proxima Centauri
3:07:46 - Length Contraction: Disintegrating Muons
3:12:00 - Length Contraction: Distant Spaceflight
3:18:54 - Length Contraction: Horizontal Light Clock In Motion
3:27:17 - Coordinates For Space
3:36:37 - Coordinates For Space: Rotation of Coordinate Frames
3:48:36 - Coordinates For Space: Translation of Coordinate Frames
3:53:10 - Coordinates for Time
4:07:12 - Coordinates in Motion
4:26:08 - Clocks in Motion: Examples
4:35:02 - Clocks in Motion: Length Expansion From Asynchronous Clocks
4:38:42 - Clocks in Motion: Bicycle Wheels
4:45:01 - Clocks in Motion: Temporal Order
4:54:35 - Clocks in Motion: How Observers Say the Other's Clock Runs Slow?
5:08:50 - The Lorentz Transformation
5:16:52 - The Lorentz Transformation: Relating Time Coordinates
5:26:10 - The Lorentz Transformation: Generalizations
5:33:18 - The Lorentz Transformation: The Big Picture Summary
5:47:37 - Lorentz Transformation: Moving Light Clock
5:54:39 - Lorentz Transformation: Future Baseball
6:02:35 - Lorentz Transformation: Speed of Light in a Moving Frame
6:08:43 - Lorentz Transformation: Sprinter
6:10:44 - Combining Velocities
6:17:46 - Combining Velocities: 3-Dimensions
6:27:45 - Combining Velocities: Example in 1D
6:30:23 - Combining Velocities: Example in 3D
6:36:34 - Spacetime Diagrams
6:50:35 - Spacetime Diagrams: Two Observers in Relative Motion
7:01:16 - Spacetime Diagrams: Essential Features
7:11:42 - Spacetime Diagrams: Demonstrations
7:15:23 - Lorentz Transformation: As An Exotic Rotation
7:27:26 - Reality of Past, Present, and Future: Mathematical Details
7:39:00 - Invariants
7:43:55 - Invariants: Spacetime Distance
7:54:25 - Invariants: Examples
7:59:19 - Cause and Effect: A Spacetime Invariant
8:12:40 - Cause and Effect: Same Place, Same Time
8:22:37 - Intuition and Time Dilation: Mathematical Approach
8:29:46 - The Pole in the Barn Paradox
8:43:51 - The Pole in the Barn: Quantitative Details
9:04:43 - The Pole in the Barn: Spacetime Diagrams
9:08:25 - Pole in the Barn: Lock the Doors
9:20:50 - The Twin Paradox
9:29:28 - The Twin Paradox: Without Acceleration
9:46:34 - The Twin Paradox: Spacetime Diagrams
9:53:12 - Twin Paradox: The Twins Communicate
10:06:34 - The Relativistic Doppler Effect
10:19:00 - Twin Paradox: The Twins Communicate Quantitative
10:30:17 - Implications of Mass
10:40:06 - Force and Energy
11:00:12 - Force and Energy: Relativistic Work and Kinetic Energy
11:07:24 - E=MC2
11:26:28 - Course Recap
Official Site: https://www.worldscienceu.com
Twitter: https://twitter.com/WorldScienceU
Facebook: https://www.facebook.com/worldscienceu
Instagram: https://www.instagram.com/worldscienceu/
- published: 01 Sep 2020
- views: 1063613