Electromagnetic Spectrum

** on cheat sheet main things we use in this

• on cheat sheet $c=2.998 \times 10^8 m/s$
• as wavelength decreases, frequency increases
• radio waves BIG
• colors are seen bc certain wavelengths cause chemical reactions when they hit our retina,
• past ultraviolet, wavelengths so small they can penetrate your body and cause mutations, cancer, etc.
• Gamma rays pass right through you and cook ur insides

$E=m\nu$ energy

Color Spectrum range: 400-780 nm wavelength

Problems: plug in values and see what part of the spectrum it is

Planck’s Constant

p. 278

$\Delta E =h\nu$