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Online Physics Glossary
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Word Meaning Remarks
Tangent The ratio of the opposite side and the adjacent side.
Temperature Measure of hotness of object on a quantitative scale. In gases, proportional to average kinetic energy of molecules.
Terminal velocity Velocity of falling object reached when force of air resistance equals weight.
Test charge Charge used, in principle, to measure electric field.
Thermal energy Internal energy. Sum of kinetic and potential energy of random motion of particles making up object.
Thermal equilibrium State between two or more bodies where temperatures do not change.
Thermal expansion Increase of length or volume of object due to change in temperature.
Thermometer Device used to measure temperature.
Thermonuclear reaction Nuclear fusion.
Thin- film interference Light interference caused by reflection from both front and rear surface of thin layer of liquid or solid.
Timbre Sound quality or tone color; spectrum of sound frequencies that produce a complete wave.
Time interval Difference in time between two clock readings.
Tokamak Type of fusion reactor.
Tone color Timbre or tone quality.
Torque Product of force and the lever arm.
 
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