Light and Optics
Electromagnetic wave-A wave that consists of outgoing electric and magnetic fields, which radiate outward from the source at the speed of light.
Electromagnetic spectrum-The range of electromagnetic waves from Gamma to Radio waves.
Reflection-The change in direction of an electromagnetic wave at a surface.
Diffuse Reflection-Light that is reflected in many directions off a rough surface.
Specular Reflection-Light that is reflected in a single direction off of a polished surface.
Angle of incidence-The angle at which a beam of light hits a reflective surface.
Angle of reflection-The angle at which a beam of light is reflected off a surface.
Flat mirror-The simplest mirror. The most basic.
Virtual image-the image that appears because of a reflective surface; an image that can’t be displayed on a physical surface.
Concave mirror-Mirrors that bend in and make images bigger.
Convex mirror-Mirrors that bend outward and make things look smaller.
Real image-A real image
Additive primary colors-Red, green, and blue colors that can be combined to make white light.
Subtractive primary colors-Cyan, Magenta, and yellow colors that are combined to make black marker.
Polarization-Limiting light to beams that have a specific electric and magnetic field.
Refraction-The bending of light as it travels from one material to another.
Converging lens-Lens that are thicker in the middle than on the outside. These types of lens bend light towards the center or converge.
Diverging lens-Lens that are thinner in the middle and thicker on the outside. These types of lens bend light away from the center or diverge.
Mirage-An event made by refraction in the atmosphere.
Dispersion-Light of different wavelengths is bent at different angles when they move into a refracting material.
Interference-When light wavelengths affect each other like a wave, it is called interference.
Diffraction-When light or waves go off in a different direction when they go around a corner, hit something, or meet an edge.
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