Difference between revisions of "2.1 (k)"
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(New page: =Demonstration 1= By this point you should already be using the phrases ''path difference'', ''phase difference'' and ''coherence''. For this first demonstration, you may wish to think of ...) |
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| − | By this point you should already be using the phrases ''path difference'', ''phase difference'' and ''coherence''. For this first demonstration, you may wish to think of it as a 'thought demonstration'. So far a LASER has been used to create the visible light diffraction patterns. | + | By this point you should already be using the phrases ''path difference'', ''phase difference'' and ''coherence''. For this first demonstration, you may wish to think of it as a 'thought demonstration'. So far a LASER has been used to create the visible light diffraction patterns, but why? The discussion can then lead onto how to create a diffraction pattern using for a single colour using a lamp - you need a light bulb, colour filter, single slit, double slit and then screen. It is worth doscussing the three phrases in this context. Next you may wish to take the idea a little further and deal with the diffraction of white light and the pattern you would expect to see. |
===Resources=== | ===Resources=== | ||
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===Safety=== | ===Safety=== | ||
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[[Waves & Particles]] | [[Waves & Particles]] | ||
Latest revision as of 06:00, 1 November 2008
Demonstration 1
By this point you should already be using the phrases path difference, phase difference and coherence. For this first demonstration, you may wish to think of it as a 'thought demonstration'. So far a LASER has been used to create the visible light diffraction patterns, but why? The discussion can then lead onto how to create a diffraction pattern using for a single colour using a lamp - you need a light bulb, colour filter, single slit, double slit and then screen. It is worth doscussing the three phrases in this context. Next you may wish to take the idea a little further and deal with the diffraction of white light and the pattern you would expect to see.
