Light Flashcards
What is light
An electromagnetic wave
Form of energy
How is light transferred
Through radiation
What is a medium
Physical substance which energy can transfer through
What is radiation
Method of transferring energy
What’s an electromagnetic wave
Electric wave and magnetic wave
What is a wave
Distrubones that transfers energy from one part to another
What is in the electromagnetic spectrum (in order)
Radio, microwave, infrared, visible, UV, X-ray, gamma ray
What is visible light
The electromagnetic waves we can see
What are luminous sources
Incandescent, electric discharge, phosphorescence, fluorescence, chemiluminescence, bioluminescence, tribluinescnce, LED
What’s incandescence
Light from heat
Burning metal
What’s electric discharge
Electric current passing through medium
What’s phosphorescence
Absorbs light then slowly realses
What’s fluorescent
Absorbs UV light and instantly releases
What’s chemiluminescence
Chemical reactions
What’s bioluminescence
Chemiluminescence in living things
