Index of refraction In this Wired article, there’s a useful recap of how and why the speed of light changes in various mediums. • Wired > “What an iPhone Lidar Can Show About the Speed of Light” by Rhett Allain (Aug 12, 2022) – Why does light travel slower in a material than it does… Continue reading When light speed changes?
Paraphrasing: Just a note before you go,A vision to be learnedTraveling near the speed of lightIt’s easy to get … Imagining how things would look when traveling near the speed of light is an interesting exercise. Using a freeware video game developed by MIT Game Lab (2012), this visualization (below) by The Action Lab is… Continue reading Sightseeing near the speed of light – realistic simulation
I’ve thought about this question for years. A FAQ. Imagine you’re traveling at the speed of light. Well, physics says that’s impossible. Mass’ gotcha. So, what can travel at the speed of light? Photons (not just the visible ones). So, imagine … does a photon “experience” space and time? Some weeks ago I recall reading… Continue reading A photon’s frame of spacetime — no rest for the massless