Chalter 12 Flashcards
Cornea
The transparent layer of tissues where light enters
Pupil
A hole that allows light to pass into the eye
Iris
A circular band of muscle
Retina
The inner lining at the back of the eye that acts as a projection screen for light rays entering your eye
Camera
A lightproof box with a lens at one end to form a real inverted image in a light detector or light sensitive plate or film
Shutter
Controls the length of time light is allowed in
Diaphragm
The part of the camera that controls the aperature
Aperture
The opening that light passes through
Charged coupled device
A light detector that records the image
Telephoto lens
Increases the amount of light that is collected and magnified a distant object
Wide angle lens
Captures a wide angle of view
Pixels
A tiny area of an image that is assigned a single colour and brightness
Compound microscope
A pair of convex lenses causes a small object to appear magnified when viewed through the eyepiece
Telescope
An optical device that provides enlarged images of distant objects
Refracting telescope
Similar in design to a telescope but had larger objective lenses
Binoculars
Two short refracting telescopes attaches together
Reflecting telescope
Light enters from one end of a tube the. Reflects of a concave mirror toward a small plane mirror
Laser
An optical device that produces a form of light in which all light rays are almost perfectly parallel and all have the same wavelength
Photons
Light as a series of many packets of energy called photons
Photonics
The technologies that make use of the way in which light travels as photons
