Quest #1 Flashcards
Incandescence
Incandescence refers to light emitted from a hot source, such as a heated filament in a light bulb.
This process is highly inefficient, with approximately 95% of energy wasted as heat rather than light.
Electric Discharge
Electric current passed through air or gas
Triboluminescence
Light produced by friction or crushing
Fluorescence
Light produced by the absorption of UV light, followed by immediate re-radiation, usually at a different wavelength
BIoluminescence
Light produced and amitted by living organisms, as a result of a chemical reaction in which chemical energy is converted to light
Phosphorescence
UV light energy is stored then re-emitted as visible light slowly over a long period of time
Chemiciluminescence
Light produced from a chemical reaction without a raise in temperature
Light emitting iodide
Small electric currents leave semiconductor materials to emit light
The Law Of Relection
- The angle of incidence equals the angle of relection
Convex
Divergent
Concave
Convergent
If M=1
Image is the same size as the object
If M>1
Image is bigger than the object
If M<1
Image is smaller than the object
Di +
Real
Di -
Virtual
Hi +
Upright
Hi -
Inverted
M+
Upright
M-
inverted
How to block x-rays from penetrating organic material
Tungsten Plate
3 things can happen when light strikes off an object
- Reflection
- Absorption
- Tranmission
Magga ray partciles cannot be blocked why?
too tiny
Light speed
3.0 * 10^8 m/s
shorter wavelength
Greater Energy
shorter wavelength
More frequent intervals
convex mirror always forms a
virtual, upright, and smaller image
Concave mirror: object at F
no image formed
Concave mirror: On c
forms on c, real, inverted, same size
Concave mirror: between C and F
beyond C, real, inverted, larger
Beyond C
Between C and F, real, inverted, smaller
Infront of F
, biggerBehind mirror, virtual, upright
