Wavelength
The distance between 2 identical points in the wave
Frequency
The number of waves passing the a point in one second
Amplitude
Distance from a rest position to the crest or trough
Bioluminescence
The ability for plants and animals to produce light
Incandescent light
Light produced for and object eg hot metal
Fluorescent light
Light emitted by some substances when they are exposed to electromagnetic radiation
Phosphorescent light
Emits light while exposed to ultra violet radiation. The ability to store energy from a light source and emit slowly over time eg. Glow in the dark
Chemiluminesicence
Light produced from a chemical reaction without a rise in temp eg. Glow sticks
Triboluminescene
Producing light from friction eg.crystals
Electric discharge
A method for producing light in which an electric current passes through the air or another ges eg. Lightning
Transparent
Materials that transmit light freely eg. Clear glass
Translucent
Materials transmit some light but not enough to see through clearly eg. Frosted windows
Opaque
Objects that obsorb and reflect light
Electroluminescence
A process of transforming electical energy directly into light energy
Visible light-orders of color
Red orange yellow green blue indigo violet
Visible light- range of wave lengths for visible light
Red-700nm, longest wavelength lowest frequency
Violet-400nm, shortest wavelength highest frequency
Color theory of light
Red-green=yellow
Green-blue=cyan
Blue-red=magenta
- Red light is ______ light
- Blue light is ______ light
- Green light is ______light
1-cyan
2-yellow
3-magenta
Components of the wave-crest
Highest of of a wave
Components of a wave- trough
Lowest point
Umbra
Darkest part of a shadow all light rays a blocked
Penumbra
Lighter partial shadow some light rays a blocked
Refraction-Light that travels from less dense to more dense
Bends towards the normal
Refraction- travel from more dense to less dense
Bends away from the normal
