TED-Ed
Hawking's Black Hole Paradox Explained
Scientists view every paradox as an opportunity for investigations that lead to discoveries. A short video looks at Stephen Hawking's Black Hole paradox and its implications for general relativity and quantum mechanics.
TED-Ed
Does Time Exist?
The simple question What time is it? may not be so simple after all. Learn about the history of measuring time and the debate on if time even exists with a short video that considers both classical physics and quantum physics when...
MinutePhysics
Relativity of Simultaneity — Special Relativity Chapter 4
Special relativity relates how things appear when the observer moves. The fourth video in the series on Special Relativity uses multiple examples to demonstrate the principle. It describes the differences when the reference frames move...
MinutePhysics
The Twins Paradox Hands-On Explanation — Special Relativity Chapter 8
The final video in a series on Special Relativity offers a new hands-on approach to solving the twins paradox developed by Paul Langevin over 100 years ago.
MinutePhysics
Spacetime Intervals: Not EVERYTHING Is Relative — Special Relativity Chapter 7
Special relativity proves that both length and time are relative—but, that's not the complete story. Scholars learn how both length and time have absolute values that don't vary with perspective. The seventh lesson in the eight-part...
MinutePhysics
Relativistic Addition of Velocity — Special Relativity Chapter 6
Scientists know things can't travel faster than light speed, so how do scholars add together numbers close to light speed? The sixth video in the eight-part series on Special Relativity answers these questions and more. the narrator not...
MinutePhysics
Length Contraction and Time Dilation — Special Relativity Chapter 5
Special relativity provides rules for making time both shorter and longer simultaneously—and does the same for distances. This concept seems confusing, but with help from a spacetime globe and mathematical explanation, the concepts...
MinutePhysics
Lorentz Transformations — Special Relativity Chapter 3
Generally, Lorentz transformations require high level math skills, but conceptual understanding can slip just beyond the grasp of many. Using a story and graph about the time and motion of people and cats, viewers of a short video can...
MinutePhysics
Spacetime Diagrams — Special Relativity Chapter 2
The second video in the series on Special Relativity introduces the concept of perspective, relative distance, and graphing spacetime. Simple illustrations create clarity while describing each concept in depth.
MinutePhysics
Why Is Relativity Hard? – Special Relativity Chapter 1
One of the most famous ideas in physics, special relativity, explains the speed of light, the space time continuum, and E=mc^2. Many scholars struggle with the hows and whys of this confusing concept. The first video in a series on...