Sure, light is slowed down when it travels through different substances. That's ... | Hacker News

Hacker Newsnew | past | comments | ask | show | jobs | submit

		jandrese on Sept 13, 2021 \| parent \| context \| favorite \| on: Why can’t I go faster than the speed of light? Sure, light is slowed down when it travels through different substances. That's why we have refraction.

micw on Sept 13, 2021 [–]

Is it really slowed down? I always assumed that it just need to take a longer way through matter than through vacuum.

Guidelines | FAQ | Lists | API | Security | Legal | Apply to YC | Contact