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Higher Physics > Relativity > Flashcards

Relativity Flashcards

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1
Q

What is time dilation?

A

The recorded time of an object moving in an inertial frame by a stationary observer. This recorded time will be a larger number than the actual time that has passed for the object that is moving.

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2
Q

What is the equation for time dilation?

A
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3
Q

What is length contraction

A

The recorded length of an object moving in an inertial frame by a stationary observer. This recorded length will be shorter than the actual length of the object that is moving.

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4
Q

What is the equation for length contraction?

A
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5
Q

What is the symbol for the speed of light?

A

c

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6
Q

What is the symbol for the speed of the moving object?

A

v

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7
Q

An inertial frame is…

A

a frame of reference that is moving at a constant velocity (it is not accelerating).

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8
Q

What are Einstein’s postulates?

A
  1. The speed of light in a vacuum is the same for all observers, regardless of their relative frame of reference.
  2. The laws of physics do not change, even for objects moving in inertial frames.
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9
Q

What is the symbol for contracted length?

A

l’

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10
Q

What is the symbol for dilated time?

A

t’

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11
Q

What is the lorentz factor?

A
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12
Q

What is the equation for time dilation using the lorentz factor?

A
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13
Q

What is the equation for length contraction using the lorentz factor?

A
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14
Q

What is the speed of light in a vacuum?

A

c = 3x108 ms-1

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Higher Physics (2 decks)

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