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Online Physics Glossary
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A B C D E F G H I J
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Word Meaning Remarks
Viscous fluid Fluid that creates force that opposes motion of objects through it. The force is proportional to objectís speed.
Volatile liquid Liquid that is easily vaporized.
Watt Unit of power, one joule per second.
Wavelength Distance between corresponding points on two successive waves.
Wave pulse Single disturbance moving through a medium or field.
Weak boson Particle that carries or transmits the weak interaction of force.
Weak interaction Force involved in beta decay of the neutron and atomic nuclei; one aspect of the electroweak force. Required for A Level
Weight Force of gravity on an object. Required For IGCSE, AS Level, A Level
Weightlessness Object in freefall, on which only the gravitational force acts. Required For IGCSE, AS Level, A Level
Wilson cloud chamber Chamber containing supersaturated vapor through which ionizing radiation leaves trails of visible droplets. Required For IGCSE, AS Level, A Level
Work Product of force and displacement in the direction of the force. Required For IGCSE, AS Level, A Level
Work function Energy needed to remove an electron from metal. Required for A Level
Work energy theorem Work done on object is equal to the change in its kinetic energy. Required for A Level
X - ray High- energy photons; high- frequency, short-wavelength electromagnetic waves. Required for A Level
X-ray diffraction A complicated technique using x-rays to "create an image" where no lense to focus the light rays is available. Required for A Level
 
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