Electromagnetic waves | Physics | Khan Academy

14:32
Refraction of light | Physics | Khan Academy

12:05
The origin of Electromagnetic waves, and why they behave as they do

7:29
Understanding Electromagnetic Radiation! | ICT #5

14:43
Atomic spectra | Physics | Khan Academy

3:26
The Electromagnetic Spectrum (EMS) - What You Must Know!

5:37
What staying up all night does to your brain - Anna Rothschild

14:03
Neil deGrasse Tyson Explains Wavelengths

13:28