1 Abdurrazzak Ajaja, February 20, 2009 at 9:08 p.m.:

Is there any other proof that light is an electromagnetic wave other than its speed has the same value as the inverse square root of the permittivity and permeability constants of vacuum product?

2 the fifth inventor, October 8, 2009 at 3:02 p.m.:

i have made eletricity flow through the air in a flat stream of light

3 srikanth, February 6, 2010 at 7:10 a.m.:

it's good but it should be accurate

4 medo, February 11, 2011 at 8:32 p.m.:

excellant

5 kevin kraydich, December 7, 2016 at 2:50 p.m.:

yes, abdurrazzak ajaja, i found proof that light is an electromagnetic wave other than its speed. I thought this video was full of rock solid information

6 Kevin Kraydich, December 7, 2016 at 2:54 p.m.:

How come Walt stopped teaching physics? He makes physics fun, playful and user friendly!I love watching him.

7 anonymous, December 7, 2016 at 3:13 p.m.:

Wow, kevin Kraydich, I totally agree. Walt was the only reason i started to learn physics. We should totally meet and discuss him one day!!!!

8 Rachel Lee, December 7, 2016 at 3:16 p.m.:

Can we make it a 3 some? I love him too!