optics - chapter 11 Flashcards
production and reflection of light
medium
any physical substances through which energy can be transferred
radiation (optics)
a method of energy transfer that does not require a medium
electromagnetic wave
a wave that has both electric and magnetic partsdoes not require a medium and travels at the speed of light
electromagnetic spectrum
the classification of electromagnetic waves by energy
electromagnetic spectrum in order of increasing energy
radiowaves
microwaves
infrared
visible
uv
xrays
gamma rays
luminous
produces its own light
ways that light is produced
incandescence
electrical discharge
phosphorescence
fluorescence
chemiluminescence
bioluminescence
triboluminescence
LED
lasers
incandescence
light produced due to increased temperature
electrical discharge
light produced by passing an electric current through gas
phosphorescence
absorbing UV light, and then emitting visible light over an extended period of time
fluorescence
absorbing UV light, and then emitting visible light immediately
chemiluminescence
light produced due to a chemical reaction
bioluminescence
light produced by living organisms due to chemical reactions inside their bodies
triboluminescence
production of light from scratching, crushing, or rubbing certain crystals
LED
light emitting diode, light produced by current flowing through a semiconductor
