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Waves, diffraction grating and fringe spacing
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- 1Reinforcement occurs when.... Cancellation occurs when....Light waves are in phase
Light waves are 180 degrees out of phase - 2When white light is used, what is the formation on the screen....Central fringe = Brightest
1 Order (maximum) has blue/violet nearest to the central fringe and red furthest away. - 3Describe how the appearance of the fringes would differ if white light had been used instead of red light.Central fringe = brightest.
Dark fringes will be closer together.(because λred > average λ white)
Bright fringes wider, dark fringes narrower. - 4Monochromatic Light is..... Coherent Light is.........a light of a single wavelength
...is a wave with constant phase difference - 5If longer wavelengths are used then....Maxima would be further apart and wider
- 6Show that no beams higher than the second order can be observed at this wavelength. Wavelength 590 nm 1.67 × 10–6m 42.1 Degrees
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- Fichas sobre Waves, diffraction grating and fringe spacing , creado por Catherine Lyons el 07/06/2018.
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- Catherine Lyons
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