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Question

How does wavelength affect diffraction?


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Solution

Diffraction:

  1. Waves spread out as they move through an aperture or around objects, which is known as diffraction. It happens when the aperture's or obstacle's size is of the same order of magnitude as the wave's wavelength. The majority of the wave is blocked at relatively small aperture sizes. Without severe diffraction at large apertures, the wave travels by or through the obstruction.
  2. Light bends around the obstacle and enters the geometric shadow when it hits an obstacle whose size is equal to the wavelength of the light. Diffraction describes this bending of light. The term diffraction is used to describe how light bends when traveling around the edge of an object. However, the amount of bending is affected by the wavelength of the light being shaped in relation to the size of the opening.

Diagram of diffraction:

The wavelength of light: The electromagnetic radiation that appears in a particular region of the electromagnetic spectrum is known as light. The phrase essentially refers to visible light, which is a type of light that can be recognized and seen with the unaided eye and also gives us our perception of light. The visible light spectrum has a wavelength range of 400–700 nanometers, falling between the larger wavelengths of infrared and the shorter wavelengths of ultraviolet.

Wavelength Formula:

λ=vf

λ=refers to the wavelength, the distance between the crests in meters m.

v=refers to the velocity of the speed of waves moving in a direction in meters per second.

f=refers to the frequency, the wave crests that go through a point in certain time cycles per second or hertz.

Diagram of wavelength:

Explanation:

  1. When waves pass through a gap with a width that is close to their wavelength, a lot of spreading occurs, such as when sound waves pass through a doorway.
  2. Light waves traveling through a doorway, for example, create less spreading since the gap width is significantly wider than the wavelength. The wavelength of the waves has an impact on how much diffraction occurs.
  3. Yes, diffraction is affected by wavelength. Compared to longer wavelengths, shorter wavelengths refract light at a greater angle. Red light and violet and blue light are diffracted at angles that are greater than those of red light.

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