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Modern Physics

Word List with 20 words
*By Dictionary.com

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Words in This List

curved space time
noun
combines space and time to single continuum that's distorted by mass
equivalence principle
noun
says gravitational field is locally indistinguishable from the effects of inertial forces
ether
noun
hypothetical substance supposed to occupy space to account for electromagnetic waves
frame of reference
noun
framework used for observing and describing physical phenomena and formulating physical law
general relativity
noun
theory which considers gravitational fields equal to acceleration
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inertial frame
noun
reference frame in which observers aren't subject to accelerating force
kinetic energy
noun
energy of a body or system with respect to the motion
lorentz contraction
noun
belief a moving body shows contraction in motion's direction when velocity is close to light speed
mass
noun
quantity of matter as determined from its weight or from Newton's second law of motion
mass-energy equivalence
noun
equation expressing relationship between mass and energy of objects with mass
michelson-morley experiment
noun
interferometer investigated velocity of light parallel and perpendicular to earth's motion
relativistic energy
noun
sum of kinetic and rest energies that's part of mass-energy equivalence formula
relativistic momentum
noun
intertwining of energy and momentum when comparing relativistic reference frames
relativity
noun
theories saying motion must be defined relative to reference frame, and space and time are relative
rest mass
noun
mass of body as measured when body is at rest relative to an observer
special relativity
noun
theory dealing with mechanics of objects moving at high velocities near the speed of light
special theory of relativity
noun
says all motion must be defined relative to frame of reference and space and time are relative
time dilation
noun
apparent loss of time of moving clock as observed by stationary observer
twin paradox
noun
believes if one twin travels near light speed and returns he will be younger than one left behind
velocity
noun
time rate of change of a body's position in a specified direction

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