Mapa mental
Optics
Conteúdo do mapa
Optics
Light
- ray
- shows direction of travel
- wavefronts
- show wavelength
- refraction
- wave changes
- speed
- direction
- @ boundary
- between mediums
- less dense -> more dense
- wavelength shortens
- bends toward normal
- more dense -> less dense
- wavelength increases
- bends away from normal
- less dense -> more dense
- between mediums
- @ boundary
- wavelength
- wave changes
- refractive index, n
- high
- light bent more
- @greater angle
- light bent more
- speed of light in vacuum, c
- ÷ speed of light in medium
- 3 x10^8 m/s
- high
- ray
Curvature
- measure of how curvy
- Dioptres, D
- up distance from source
- down curvature
- plane wave
- 0 curvature
- distant source
- 0 curvature
- converging
- +ve
- becomes more curved
- convex lens
- adds curvature
- C added= Power
- thicker
- more power
- adds curvature
- convex lens
- becomes more curved
- +ve
- diverging
- -ve
- becomes less curved
- incoming waves
- 1/u always -ve
- -ve
- measure of how curvy
Magnification
- image size
- ÷ object size
- congruent
- triangles
- no units
- if M>1
- image larger
- object smaller
- image larger
- if M<1
- image smaller
- object larger
- image smaller
- image size
Pinhole cameras
- single
- small
- focused image
- dim
- inverted
- focused image
- large
- blurred image
- bright
- inverted
- blurred image
- small
- double
- small
- 2 inverted images
- clear
- not as clear as single
- clear
- 2 inverted images
- small
- single
Resolution
- of an image
- size
- smallest detaill
- size
- pixel
- smallest detail
- digital image
- CCD
- charge-coupled device
- array
- tiny light receptors
- represent each pixel
- records
- light intensity
- to build inverted image
- wavelength
- light intensity
- tiny light receptors
- CCD
- digital image
- smallest detail
- object size
- ÷
- no. of pixels
- (in 1 dimension)
- units (m/pixel)
- no. of pixels
- ÷
- of an image
