God Not Found

Science => Physics/Chemistry => Topic started by: Unbeliever on January 31, 2018, 04:22:29 pm

Title: slow light
Post by: Unbeliever on January 31, 2018, 04:22:29 pm
https://www.youtube.com/watch?v=EK6HxdUQm5s


https://www.youtube.com/watch?v=RkxlBKjCoA0


https://www.youtube.com/watch?v=8bR1ydsYuZo


https://www.youtube.com/watch?v=Y_9vd4HWlVA