range of frequencies of electromagnetic waves that stimulates the retina of the eye
straight-line path of light
a body that emits light waves
body that reflects light waves from an outside source
rate at which visible light is emitted from a source
unit of luminous flux
illumination of a surface
lumens per square meter
the luminous flux that falls on 1m2 of a sphere 1m in radius
transmit light without distortion
transmits light but does not permit objects to be seen clearly
transmits no light, but absorbs or reflects all light
ordered arrangement of colors from violet to red
red light, blue light, green light,
yellow, cyan, magenta
any color made up of two primary colors
a molecule that absorbs certain colors and transmits other
a colored material that absorbs certain colors and reflects others
a pigment that only absorbs one color from white light
a pigment that absorbs two primary colors and transmits one.
constructive and destructive interference of light waves
a light that is produced by a polarizing material
light is reflected back in parallel beams.
light that is reflected but not image not easily seen.
angle of refraction
angle that the refracted ray makes with the normal to the surface
angle of refraction smaller than the angel of incidence
ratio of the sine of the angle of incedence to the sine of the angle of refraction is a constant
index of refraction
light going from vacuum to another medium, the constant n,
total internal refraction
when light reflects completely off the inside wall of a denser medium rather than passing through the wall into a less dense medium
the smallest angle of incidence for which light is totally reflected
the separation of light into its spectrum
a mirror with a flat surface, light is reflected by regular reflection
a source of spreading light rays
the image further than what it really is.
rays that dont converge at a point
a mirror image that points in the same direction as the reflected object
reflects light from its inner surface
a straight line perpendicular to the surface of a mirror that divides the mirror in half
parallel rays meet at F
the distance from the focal point to the mirror along the principal axis
rays that actually converge and pass through the image
cannot be projected onto a screen or captured on a piece of paper
the ratio of the size of the image, hi, to the size of the object, ho
the image formed by parallel rays in a large spherical mirror
spherical mirror that reflects light from its outer surface
made up of transparent material with a refractive index larger than than of air
thicker at the center than the edges
thinner in the middle than at the edges
object viewed through a lens appears ringed with color.
lens that converges the light
a pattern of bright and dark bands
emits only one wavelength
when wave crests and troughs reach same point at the same time.
a device that transmits light and forms an interference pattern in the same way that a double slit does
central bright band of one star falls on the first dark band of the second.