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Online Physics Glossary
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Word Meaning Remarks
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
 
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