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Waves (Electromagnetic Radiation (Visible Light, Infrared waves,…
Waves
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Sound's Cool
Sound waves can be reflected from dense objects, resulting in an echo. This technique is used in ultrasound, SONAR, and echolocation.
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Resonance is when an object vibrates, causing synchonous vibrations in a nearby object.
Interference: the phenomenon when two waves meet and their amplitudes are affected in one of two ways
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Doppler Effect: when the proximity of an observer affects perception of sound, as in an ambulance siren
What's in A Wave?
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Wavelength is the distance from crest to crest or trough to trough. #
Amplitude is the distance from the rest line to a crest or trough. #
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Frequency is the number of waves that occur in a period of time. It is measured in Hertz. #
Wavelength and frequency have an inverse relationship. #
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The Optics Files
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Convex mirrors diverge light, producing small, upright images.
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Properties of Light
Refraction
When light bends as it passes from one medium to the next, such as when a pencil appears bent when placed in a glass of water
Diffraction
When light waves strike the edge of an obstacle, creating new waves, such as waves crashing on rocks and then forming new patterns
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Reflection
When light bounces off an object, such as a mirror
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