Light Bulbs Interference Pattern - Vey Easy Multiple Choice

In summary, when trying to create an interference pattern with two small light bulbs placed close together, the pattern would not be visible due to the random phase differences between the light waves from the two sources. It is also possible that the diffraction of light through the air molecules surrounding the bulbs could contribute to the lack of visibility. While option D (very short wavelengths of the light waves) may also seem correct, the random phase differences between the sources are the main factor preventing the interference pattern from being visible.
  • #1
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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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  • #2
If the phase differences where really random, how could a shorter wavelength help you?
 
  • #3
you are right... so i guess it is number A . Thanks.
 

1. How do light bulbs create an interference pattern?

Light bulbs create an interference pattern when their light waves overlap and interfere with each other. This is due to the wave nature of light, where crests and troughs can either amplify or cancel each other out.

2. What causes the different colors in the interference pattern?

The different colors in the interference pattern are a result of the different wavelengths of light emitted by the light bulbs. Each color corresponds to a specific wavelength, and when these wavelengths overlap and interfere, they create the colorful pattern.

3. Can the distance between the light bulbs affect the interference pattern?

Yes, the distance between the light bulbs can greatly affect the interference pattern. The closer the light bulbs are, the greater the overlap of their light waves and the more pronounced the interference pattern will be.

4. Are there any real-world applications of light bulb interference patterns?

Yes, light bulb interference patterns have many real-world applications, such as in diffraction grating, which is used in spectrometers to separate and analyze different wavelengths of light. They also play a role in the holographic technology used in security features on credit cards and passports.

5. Can we observe interference patterns with any type of light source?

Yes, interference patterns can be observed with any type of light source, as long as the light emitted has a specific wavelength. This includes natural light, such as sunlight, as well as artificial light sources like light bulbs or lasers.

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