Lifetime of Light Inside a Mirrored Sphere
Most recent answer: 04/10/2015
- stephen zdradzinski (age 72)
welcome, md, usa
In principle if the mirror surfaces were 100% reflecting the light would bounce around forever. Unfortunately there is no such thing as a perfect mirror. Ordinary silvered mirrors have reflection coefficients of 95% or so. That means after 10 bounces or you have only about 60% of the light left. And so on...
(published on 04/10/2015)