The motion of objects can be described by words. Even a person without a background in physics has a collection of words that can be used to describe moving objects. Words and phrases such as going fast , stopped , slowing down , speeding up , and turning provide a sufficient vocabulary for describing the motion of objects.
HyperPhysics is an exploration environment for concepts in physics which employs concept maps and other linking strategies to facilitate smooth navigation.
Mar 21, 2019 · The laws of physics define the rules, as we observe them, for the motion of matter and related concepts in space and time. For example, the law for the conservation of energy can not only be applied to matter but also to related concepts such as electromagnetic radiation.
Jun 11, 2018 · Representation of a standing wave (top) and a propagating wave (bottom). The speed at which the waves propagate is the speed of sound (SI unit: m/s). Its value is related to the compressibility (SI unit: m 2 /N or 1/Pa) and the density (SI unit: kg/m 3) of the material in which the waves propagate, by .
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The above chart approximates the aperture as being circular (a common approximation), but in reality these are polygonal with 5-8 sides. The calculation for pixel area assumes these extend all the way to the edge of each sensor, and all contribute to the final image.