how is light produced

Question 1

definition of luminous

Answer 1

light produced on their own

Question 2

definition of non-luminous

Answer 2

seen by reflective light

Question 3

definition and example of chemiluminescence

Answer 3

bi product of chemical reaction. ex glow stick (cold light)

Question 4

definition and example of bioluminescence

Answer 4

light living in organisms ex. firefly

Question 5

definition and example trio-luminescence

Answer 5

friction ex sugar

Question 6

incandescence

Answer 6

high temperature

Question 7

electrical discharge

Answer 7

electrical currant through a gas. ex lightning

Question 8

phosphorescence

Answer 8

absorption of ultraviolet light ex glow in the dark (time limited)

Question 9

fluorescence

Answer 9

absorbs UV light and releases visible light ex laundry detergent, fluorescent light bulb

Question 10

steps of fluorescence

Answer 10

mercy vapour
electrical current
when combined emits UV light
produces visible light

Question 11

LED

Answer 11

light emitting diode = electrical currant from a semi conductor ; flow one direction