Double slits experiment, wavelength calculation

In summary, the conversation discusses using the equation dsin(theta) = (m + 1/2)lambda to solve for the wavelength in a double slit experiment with specific measurements given. It is mentioned that the angle information is necessary to apply the formula, but it is also noted that this information can be obtained from knowing the distances involved in the experiment.
  • #1
alsaadawi
3
0

Homework Statement



In a double slit experiment with slits 1. 10-5 m apart, light casts the first bright band 3.10-2 m from the center of a screen 0.65 m away what is the wavelength ?

Homework Equations



dsin(theta) = (m +1/2)lambda,

The Attempt at a Solution



I think to solve this problem I need the angle more to apply this formula

dsin(theta) = (m +1/2)lambda,

am I right, or maybe we can solve it without the angle ?

Thanks in advance
 
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  • #2
If you know the distance to the screen and the distance to the first fringe from the centre line then you have the angle information
 
  • #3
truesearch said:
If you know the distance to the screen and the distance to the first fringe from the centre line then you have the angle information

Yess sure, thank you.
 

FAQ: Double slits experiment, wavelength calculation

What is the Double Slits Experiment?

The Double Slits Experiment is an experiment designed to demonstrate the wave-like behavior of light. It involves shining a beam of light through two parallel slits onto a screen, resulting in an interference pattern that can only be explained by the wave nature of light.

How is the wavelength calculated in the Double Slits Experiment?

The wavelength in the Double Slits Experiment is calculated using the formula λ = dsinθ, where λ is the wavelength of the light, d is the distance between the two slits, and θ is the angle between the diffracted beams and the central maximum on the screen. This formula is derived from the principles of diffraction and interference.

Why is the Double Slits Experiment important?

The Double Slits Experiment is important because it provides evidence for the wave nature of light, which was a major discovery in the field of physics. It also has many practical applications, such as in the development of diffraction gratings and the understanding of interference patterns in various fields like optics, acoustics, and quantum mechanics.

Can the Double Slits Experiment be performed with other types of waves besides light?

Yes, the Double Slits Experiment can be performed with other types of waves, such as sound waves, water waves, and even electron waves. This further strengthens the evidence for the wave nature of these particles and the universality of the principles of diffraction and interference.

How does changing the distance between the two slits affect the interference pattern in the Double Slits Experiment?

Changing the distance between the two slits in the Double Slits Experiment will affect the spacing of the interference pattern on the screen. A smaller distance between the slits will result in a wider spacing of the interference pattern, while a larger distance will result in a narrower spacing. This is because the wavelength of the light remains constant, but the angle of diffraction changes with the distance between the slits.

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