physics quiz 1
laws of reflection
1. The angle of incidence is equal to the angle of reflection
2. The angle of reflection, normal, and angle of incidence all exist on the same plane
specular reflection
against a smooth, shiny surface
diffuse reflection
reflection of light off of an irregular surface
transparent
all light will pass through
translucent
some light is absorbed, and some passes through
opaque
all light is absorbed and reflected
light
an electromagnetic wave which does not need a medium for it to transmit
bioluminescense
occurs in living things
chemiluminescence
occurs during a chemical reaction
triboluminesence
occurs when crystals are banged or rubbed together, creating sparks
fluoresence
absorbs ultraviolet light and releases it immediately
phosphoresence
phosphorus absorbs ultraviolet light and releases it slowly over time
electric discharge
occurs when an electrical current passes through a gas
incandesence
when objects are heated to high temperatures, they glow
Led
an electrical switch made from semi conductor material, lasts longer because current doesnt flow as fast
luminous
an object that produces light