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Physical Science

Chpt 15 vocab for final

TermDefinition
Incandescent bulbs that have materials which are heated until they release visible energy
Phosphorescence the emission of radiation in a similar manner to fluorescence but on a longer timescale, so that emission continues after application of energy ceases
Flourescent bulbs that are made of mercury
Bioluminescence Light given off by living creatures
Chemiluminescence light is emitted through a chemical reaction (glowsticks)
Spectrograph an instrument that separates light into a frequency spectrum and records the signal using a camera
Spectroscope an instrument that splits light into the wavelengths that make it up
Line Spectrum this displays distinctly visible lines of color that can be seen at specific wavelengths aligned along a scale in a spectrograph
Monochromatic this emits a single color
Speed of Light 3.00x10^8
Candela SI unit for light
Inverse-Square Law distance and its effect on forces are often related by this
Law of Reflection states that the incident ray, the reflected ray, and the normal to the surface of the mirror all lie in the same plane. Furthermore, the angle of reflection is equal to the angle of incidence .
Subtractive Colors means that the colors are reflected
Additive Colors means that light is being emitted
Diffuse Reflection rays bounce off of a rough surface in random directions
Specular Reflection rays bounce off of a smooth surface
Mirrors plane(flat), convex, and concave
Convex converging, curved outward, corrects farsightedness
Concave diverging, curved inward, corrects nearsightedness
Plane flat mirror
Lenses an object or device that focuses or otherwise modifies the direction of movement of light, sound, electrons, etc.
Diverging concaving; going inward
Converging conves; going outward
Nearsightedness can see up close instead of far away
Farsightedness can see far away but not close up
Normal the line perpendicular to the surface
Incident Ray the ray hitting the surface
Reflecting Ray the ray bouncing off the surface
Angle of Incidence the angle created with the incident ray and the normal ray
Angle of Reflection the angle created by the reflecting ray and the normal ray
Created by: Giraffe Girl