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Phys: Behavior Light
TEKS P.8.B, P.8.D-P.8.G
| Term | Definition |
|---|---|
| reflection | phenomenon where a wave bounces off a surface |
| refraction | change in direction of a wave when it passes from one medium to another where its speed is different |
| diffraction | waves bending and spreading out as they pass around an obstacle or through a narrow opening |
| interference | occurs when two or more waves meet and combine, resulting in a new wave with either a greater or lesser amplitude than the individual waves |
| resonance | when a system is driven by an external force at its natural frequency, causing it to vibrate with significantly increased amplitude |
| Doppler effect | the change in the frequency of waves as observed by an observer when there is relative motion between the source of the waves and the observer |
| emission spectra | the set of discrete bright lines or a continuous pattern of colors observed when a substance is energized and emits light |
| polarization | the property of a transverse wave describing the orientation of its oscillations relative to its direction of travel |
| superposition | when two or more waves overlap, their combined displacement is the sum of their individual displacements, leading to constructive or destructive interference |
| plane mirror | a mirror with a flat, planar reflective surface that creates a virtual image |
| convex lens | a transparent optical lens that is thicker at the center and thinner at the edges |
| real image | formed when light rays actually converge at a specific point, allowing the image to be projected onto a screen |
| virtual image | a perceived location where light rays appear to originate, rather than a place where light rays actually converge |
| angle of incidence | the angle between an incoming wave or particle (like a light ray) and the normal (a line perpendicular to the surface) at the point where it strikes a surface |
| angle of reflection | the angle at which the reflected ray bounces off the surface |
| angle of refraction | the angle between a ray of light after it passes from one medium to another and a line called the normal, which is perpendicular to the surface at the point of entry |
| index of refraction | a number that describes how much light bends when passing from a vacuum into that material |
| red shift | when the wavelength of electromagnetic radiation increases causing the light to shift towards the red end of the spectrum |
| blue shift | the decrease in wavelength due to the source moving towards the observer causing the light to shift towards the blue end of the spectrum |
| incident ray | a ray of light that travels from a source and strikes a surface |
| reflected ray | a ray of light or other radiant energy that bounces back from a surface after striking it, rather than being absorbed or transmitted through it |
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NEISDSci
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