Special Relativity

"With great speed comes great time dilation" -Albert Einstein

This video is so highly underrated I can't believe this.

Thank you. Best explanation of SR I've ever seen.

Fortunately for me, I had watched "We all move at the speed of light" (Nov 8 2018) and "A new way to visualize General Relativity (which is brilliant, BTW!) before this, which helped understand this. These videos are fantastic!

This is by far the best explanation I've seen after getting confused by watching 15+ videos about relativity. Thx bro :)

the idea that time itself is different on the front and the back of the spaceship to an external observer gave me a whole new perspective and intuition about the theory. I've never seen such an explanation. Thanks so much :)

How is it possible for this kind of channel to be so underrated. Amazing explanations, great graphics, beautiful content....

Is it fair to say that length dilation is a physical manifestation of an object bending into the time dimension?

Stumbled upon this channel and I think it has the best explanation on the entire internet

I'm 15 years old..and I understood this video fully.. what a great explanation!

The only way to progress in our quest to understand the universe and the life is to watch this kind of videos and renounce to our old common understandings. These videos are a real step toward that goal! Thanks!

Everyone always makes it complicated. They speak of the speed of light as being an invariant, and then proceed to relate everything to that one invariant alone. Well it is a heck of a lot easier to understand special relativity(SR) if you take into account the second invariant. Everything that exists within the 4D environment known as space-time, is in motion exactly as much as is light in motion across space. The only difference is that for mass particles, a percentage of that motion, is across the dimension of time. So the point is, since you are constantly on the move within space-time, all you can do is change your direction of travel. Now if you create a very simple geometric representation of that ongoing motion within space-time, you can use it to derive the SR mathematical equations, and complete this task in mere minutes. This task includes deriving the Lorentz transformation equations as well.

Very well explained. You took a difficult concept, and made it easy for people to understand.

Definition of Relativity: 0:11 Ball throw example into speed of light: 1:02 Two events occur differently depending on observer: 2:33 Previous scenario with time: 4:20 Length contraction: 5:38 Time dilation: 7:12 Summary example using muons(?): 9:03 Conclusion: 11:03

Really well done. I am re-reading brian Greene's book the "elegant Universe" and I am retired from being a chef. So these videos are a huge help.

Thank you !! By the way i'm a theoretical n mathematical physicist, can u give me the right to translate and dubbing your videos into Arabic language, there are a lot of people who need to feed their brains, please ❤

understanding complex subjects of physics is necessary and not easy. Your videos are very clear and simple! Your efforts to prepare your videos are very much deserving of gratitude and recognition !! Thanks a lot. I subscribe, like and share. Good luck.

I love everything about your videos. Btw, your background music is perfect for contemplation Keep up the good work!

Great as usual. One thing I would state differently and place it in the beginning. I never hear anyone making it this simple. “If you hold speed constant at all times no matter what the circumstance, something else has to give”. Given light’s velocity is based on distance (length and time), then if you hold light velocity constant in all observers views such that light stays constant in their reference frames and, also, if they look at some one else’s reference frame moving or not, then those who use light to observe find that something has to give. That would be length and time. Not sure if a similar construct could be applied to an observer using another method such as sound speed. If you hold the speed sound constant in all mediums, then the materials would require to offer the same impedance to sound. For example, air and water. Not so much. Light in vacuum travels with the impedance space time (ST) offers to propagation of electric and magnetic fields but as far as we know, ST does not vary in impedance or vary as a medium to affect c even when curved.

One of the best visual demonstrations of Special Relativity out there, made me subscribe. Gonna start the GR series