All Physics

Incandescence

light emitted from a material because of the high temperature of the material

Electric Discharge

light emitted by a heated gas

Luminescence

The emission of light by a material or an object that has not been heated

Fluorescence

light that is emitted during exposure of the source to ultraviolet light. Emits immediately

Phosphorescence

light that is emitted due to the exposure of the source to ultraviolet light, and that continues to be emitted for some time in the absence of ultraviolet light.

Chemiluminescence

Light that is produced by a chemical reaction without a rise in temperature.

Bioluminescence

light that is produced by a biochemical reaction in a living organism.

Wavelength

distance between maximums(peaks) of the spectrum

Electromagnetic Spectrum

The full range of electromagnetic radiation organized by wavelength and color.

Red on the Emag spectrum

Longest wavelength (700 nm)

Violet on the Emag Spectrum

Shortest wavelength (400 nm)

1 nm =

1 billionth m OR 1 m = 1 billion nm

Light rays off object parallel to principle axis. Concave mirror

reflects off mirror and through focal point

light ray off object through focal point. Concave mirror

reflects off mirror and parallel to principle axis

Light rays off center of curvature. Concave mirror

reflects off mirror and back through center of curvature

SALT attributes

size, attitude, location, type

Object beyond/behind center of curvature. Concave mirror

S: smaller, A: inverted, L: between center of curvature and focal point. T: real image

Object between Center of curvature and focal point. Concave mirror

S: larger, A: inverted, L: behind Center of curvature, T: real image

Object on Center of curvature. Concave mirror

S: same, A: inverted, L: on center of curvature, T: real image.

Object in front of focal point. Concave mirror

S: larger, A: same, L: through/in front of mirror, T: virtual image

Refraction (in mirror)

bending of light when it travels between two different substances or mediums. Occurs because the speed of light is different in different mediums due to their density.

Refraction in Less dense to more dense medium

Light bends towards the normal. (faster to slower)

Refraction in More dense to less dense medium

Light bends away from the normal. (slower to faster)

light parallel to PA (converging lens)

Passes through F on the other side

light through F (converging lens)

Parallel to PA on other side

Light through vertex (converging lens)

straight through vertex to other side.

Object between 2F and F (converging lens)

larger, inverted, beyond 2F, real image

Object in front of F - between F and lens (converging lens)

larger, same, between 2F and F, virtual image

Object beyond 2F (converging lens)

smaller, inverted, between 2F and F, real image

Law of reflection

angle of incident = angle of reflection