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Online Physics Glossary
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Word Meaning Remarks
Manipulated variable Variable that the experimenter can change.
Mass defect Mass equivalent of the binding energy; m=E/c^ 2
Mass number Number of nucleons ( protons plus neutrons) in the nucleus of an atom.
Mass spectrometer Device used to measure the mass of atoms or molecules.
Matter wave Wave-like properties of particles such as electrons.
Mechanical advantage Ratio of resistance force to effort force in a machine.
Mechanical energy Sum of potential and kinetic energy.
Mechanical resonance Condition at which natural oscillation frequency equals frequency of driving force; amplitude of oscillatory motion at a maximum.
Mechanical wave Wave consisting of periodic motion of matter; e.g. sound wave or water wave as opposed to electromagnetic wave.
Melting point Temperature at which substance changes from solid to liquid state.
Meson Medium mass subatomic particle consisting of combination of a quark and antiquark.
Meter SI unit of length.
Mirror equation 1/do +1/di=1/f, where do is object distance, di is image distance, f is focal length.
Moderator Material used to decrease speed of neutrons in nuclear reactor.
Momentum Product of objectís mass and velocity.
 
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