IPhO' 2008 Messages 44 Reaction score 0 Thread starter Nov 23, 2009 #1 Why the speed of light decreases when it is in the medium? Thank you.
jtbell Staff Emeritus Science Advisor Homework Helper 2025 Award Messages 16,110 Reaction score 8,385 Nov 23, 2009 #2 There's a post that addresses this in the FAQ sticky thread at the top of the General Physics forum.