Young's Double Slide Experiment
Ανέβηκε στις 4 Μαΐ 2010
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Young's Double Slit Experiment
Thomas
Young's double slit experiment was extremely important in the area of
wave theory. His experiment proves that light exhibits wavelike
properties.
Monochromatic light, light consisting of one color, is
split using two slits placed close together. Two coherent light waves
emerge on the other side of the slits. Coherent light, meaning the waves
have the same frequency and phase, will both constructively and
destructively interact. This interaction causes light and dark fringes
based on simple geometry. If this pattern is in fact the result of the
experiment, light is proven to have wavelike properties.
The light
and dark fringes are caused by the difference in phase of the light when
it is incident on an object (i.e. light sensor). The light from the
bottom slit has farther to travel and therefore a phase difference
exists between the two rays of light. This interaction between these two
waves creates a light, dark, or intermediate fringe.
An area where a
light fringe occurs, the phase difference between the two coherent
light waves is zero degrees. For example, there is no phase difference
and the waves add together to create a fringe with maximum intensity. An
area where a dark fringe occurs, the phase difference between the two
coherent light waves is equal to 180 degrees. At this point, the waves
add together and completely cancel each other out. Intermediate fringes
occur when the phase difference is somewhere between zero and 180
degrees. In general, intensity of the fringe decreases as the phase
difference between the two light waves increases from zero to 180
degrees.
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Young's Double Slit Experiment
Thomas
Young's double slit experiment was extremely important in the area of
wave theory. His experiment proves that light exhibits wavelike
properties.
Monochromatic light, light consisting of one color, is
split using two slits placed close together. Two coherent light waves
emerge on the other side of the slits. Coherent light, meaning the waves
have the same frequency and phase, will both constructively and
destructively interact. This interaction causes light and dark fringes
based on simple geometry. If this pattern is in fact the result of the
experiment, light is proven to have wavelike properties.
The light
and dark fringes are caused by the difference in phase of the light when
it is incident on an object (i.e. light sensor). The light from the
bottom slit has farther to travel and therefore a phase difference
exists between the two rays of light. This interaction between these two
waves creates a light, dark, or intermediate fringe.
An area where a
light fringe occurs, the phase difference between the two coherent
light waves is zero degrees. For example, there is no phase difference
and the waves add together to create a fringe with maximum intensity. An
area where a dark fringe occurs, the phase difference between the two
coherent light waves is equal to 180 degrees. At this point, the waves
add together and completely cancel each other out. Intermediate fringes
occur when the phase difference is somewhere between zero and 180
degrees. In general, intensity of the fringe decreases as the phase
difference between the two light waves increases from zero to 180
degrees.
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http://www.facebook.com/tutorvista
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