Flashcards
Unit C - Word Bank
Cards in this deck (21)
- 1Optical DeviceAny technology that uses light
- 2MicroscopeAn optical device that allows you to see specimens in great detail.
- 3TelescopeAn optical device that allows
- 4Refracting TelescopeHas two lenses, one on each end of a long tube. The larger lens is the objective lens that gathers light and focusses the rays toward the eyepiece, which in turn allows you to see the object larger than it appears with the unaided eye.
- 5Reflecting TelescopeUses a large circular mirror that curves inward. This curved surface gathers light extremely well. Another mirror inside the telescope directs light to the eyepiece, which leads to your eye.
- 6BinocularsPractically 2 short refracting telescopes fixed together.
- 7Ray DiagramsShows how light travels.
- 8TransparentObjects that allow light to travel straight through them.
Ex. glass, clear plastic - 9TranslucentObjects that allow only some light to pass through.
Ex. frosted window pane - 10OpaqueObjects that do not allow any light to pass through it. They absorb or reflect the light that hits them. Since light cannot pass through them, a shadow is created behind it.
Ex. wood, metal, humans (like me), bricks - 11Non-luminousObjects that don't produce light.
Ex. opaque objects, pencil - 12LuminousSomething that is a light source.
Ex. the sun, a lamp - 13Regular ReflectionOccurs when light rays hit a smooth surface. The rays reflect at equal angles and they travel parallel to each other.
- 14Diffuse ReflectionWhen light rays hit a rough or uneven surface. The rays reflect, but at different angles, because the surface is rough.
- 15Incident RaysIncoming rays.
- 16Plane MirrorsFlat mirrors and provide the clearest reflections.
- 17NormalA perpendicular line to a mirror at the point of reflection. (Look at textbook, pg. 196).
- 18Angle of IncidenceThe angle between the incident ray and the normal.
- 19Angle of ReflectionThe angle between the reflected ray and the normal.
- 20Law of ReflectionA diagram that shows the law of reflection. (Look at textbook).
- 21—