In the context of diffraction, what does the term 'coherence' refer to?

Practice Questions

Q1
In the context of diffraction, what does the term 'coherence' refer to?
  1. The ability of waves to interfere
  2. The speed of light
  3. The intensity of light
  4. The wavelength of light

Questions & Step-by-Step Solutions

In the context of diffraction, what does the term 'coherence' refer to?
  • Step 1: Understand that waves can be light waves or sound waves.
  • Step 2: Learn that waves have a property called 'phase', which tells us where the wave is in its cycle.
  • Step 3: Know that 'coherence' means that these waves keep a consistent phase relationship over time.
  • Step 4: Realize that when waves are coherent, they can combine in a way that creates clear patterns, called interference patterns.
  • Step 5: Remember that if waves are not coherent, the patterns will be blurry or unclear.
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