HackerTube / Video
Why No One Has Measured The Speed Of Light
Veritasium
Veritasium explains why the one-way speed of light has never been measured, only the round-trip speed, since measuring it requires synchronized clocks that assume the answer. It explores the implications for relativity.
Used as the standard reference in threads about light speed, clock synchronization and untestable assumptions in physics.
17 Hacker News mentions · 2020–2024