Light Bulbs Interference Pattern - Vey Easy Multiple Choice

AI Thread Summary
The discussion revolves around the conditions necessary for observing an interference pattern from two small light bulbs. The primary focus is on identifying why the interference pattern may not be visible, with options including random phase differences and short wavelengths. Participants suggest that random phase differences (option A) are the most significant factor, while also considering the impact of short wavelengths (option D). The consensus leans towards option A as the best answer, emphasizing the role of phase differences in light wave interference. Overall, the discussion highlights the complexities of light wave behavior in creating observable interference patterns.
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Homework Statement


Two small light bulbs are placed close together to try and create an interference pattern. This pattern would not be visible due to the:

a. random phase differences between the light waves from the two sources
b. very high speed of the light waves
c. diffraction of the light through the air molecules surrounding the bulbs
d. very short wavelengths of the light waves
e. inability of the human eyes to resolve two sources close together


Homework Equations





The Attempt at a Solution



I think the correct answer is A. But, D also sounds correct but I am not sure what is the best answer. I know that light has short wavelength but then two light sources also have random phase differences.

Please help.
 
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If the phase differences where really random, how could a shorter wavelength help you?
 
you are right... so i guess it is number A . Thanks.
 

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