I Never Understood Why Space Shrinks as You Approach Light Speed... Until Now

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:    • I finally understood why you can't go fast...   All relativity episodes in sequence    • 2) Special Relativity Intuition 👇   This video was sponsored by Brilliant