Light

light

a form of energy (3×10^8m/s)

photoelectric effect

the emission of electrons from the surface of a metal when uv light falls on it

dispersion of white light

the splitting of white light into a rainbow/different wavelengths

reflection

the bouncing of light from a surface

one property of a wave that changes and one that does not when refracted

wavelength

amplitude

1st law of reflection

the incident ray, the normal at the point of incidence and the reflected ray all lie on the same plane

2nd law of reflection

the angle of incidence = angle of reflection

parallax

th apparent motion of 2 objects due to movement of the observer

real image

formed by the actual intersection of rays, can be projected on a screen

virtual image

formed by the apparent intersection of rays

refraction

the bending of light as it passes through one medium to another

1st law of refraction

the incident ray, the normal on the point of incidence and the refracted ray all lie on the same plane

2nd law of refraction (snells law)

sini/sinr=n, n is a constant

electromagnetic waves

energy transmitted from one place to another at the speed of light

diffraction of waves

spreading out of a wave when it passes through a gap or obstacle

wave interference

when 2 waves meet and combine to form a new wave

monochomatic light

light of only one wavelength - lasers

critical angle

the angle of incidence at which the angle of refraction is 90 degrees

total internal reflection

the angle of incidence in the more dense medium exceeds the critical angle