measuring distance
What measuring distance means in Physics GCSE, as defined for AQA.
Definitions of measuring distance
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Check what you remember
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Reference: AQA
Comparing how bright a supernova looks with how bright it really is gives its distance, measured independently of its red-shift.
A metre rule for a bench, or a tape measure or a trundle wheel for a corridor or a track.
Topics that use measuring distance
- Red-shift (physics only) (AQA GCSE)
- Speed (AQA GCSE)
Related terms
- absorption line spectra
- accelerating expansion
- average speed
- constant speed
- dark energy
- dark mass and dark energy
- distance equation
- distance travelled
Using measuring distance in the exam
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