1. c =  f E = ℏf Where : ℏ = 6.63 x 10-34 J٠s velocity -
c = 3.0 x 108 meters per second
wavelength -
meters
frequency -
per second or Hertz (Hz)
energy -
Joules
Planck’s Constant -
ℏ = 6.63 x J٠s

2. radio/micro/Infrared/ /ultraviolet/X-rays/ gamma
Electromagnetic spectrum
do not need a medium to travel through
radio/micro/Infrared/ /ultraviolet/X-rays/ gamma
increasing frequency
decreasing wavelength
constant speed
increasing energy
visible light

3. Radio waves Microwaves Infrared red Visible light orange Ultraviolet
X-rays
Gamma rays
increasing energy
increasing frequency
decreasing wavelength
red
orange
yellow
green
blue
violet
constant speed