To try everything Brilliant has to offer—free—for a full 30 days, visit https://brilliant.org/FloatHeadPhysics/ . The first 200 of you will get 20% off Brilliant’s annual premium subscription.

Timestamps:
00:00 Quick recap: Why we can't achieve speed of light
00:50 Do we reach 'c' from space ship's perspective? 
2:41 Shouldn't earth reach 'c' as seen from space ship? 
4:47 Fundamental rule of relativity
6:37 Brilliant.org
7:31 Discovering Length Contraction
12:26 Length contraction formula
14:14 Evidence for Length contraction
15:25 Einstein says Earth is flat
18:18 You cannot reach speed of light


According to special theory of relativity, a constantly accelerating space ship can never reach the speed of light. Because, due to time dilation, the acceleration slows down and approaches zero, as the speed of the ship approaches c. Remember, it all comes from the postulate that speed of light is the same in all reference frames. 

But, you asked what does it look like from the space ship's perspective? In this video, we will tackle just this. We will discover length contraction and why we STILL can't reach light speed. 

Link to previous video: 
https://www.youtube.com/watch?v=Vitf8YaVXhc

All relativity episodes in sequence
https://www.youtube.com/playlist?list=PLawLaqps30oBmdbw_D-AI1RQUoCO7Wr1K

This video was sponsored by Brilliant