Constructive interference

Destructive interference

wavelength of RED LIGHT

wavelength of GREEN LIGHT

wavelength of BLUE LIGHT

comparing spectra from prisms and gratings

Photoelectric effect

Threshold frequency

Point Source

what does LASER stand for?

Emission of light (photons)

Absorption of light (photons)

Lasers

n-type semiconductor

p-type semiconductor

p-n junction

p-n junction in forward bias

p-n junction in reverse bias

L.E.D.

Photodiode

Photodiode in photovoltaic mode

Photodiode in photoconductive mode

what does MOSFET stand for?

How does a MOSFET work?

Findings of alpha paticle - gold experiment

conclusions of alpha particle - gold experiment

Spontaneous Fission

Induced Fission

Nuclear fusion

why is energy released in fission and fusion?

Average annual effective dose of radiation