- #1

mssm22

- 1

- 0

the airy disk equation is d= 1.22 lambda / NA

my question is:

lambda is the wavelength in medium or in vacuum?

thanks in advance

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In summary, the Airy Disk Equation is a mathematical formula used in various fields of science, such as astronomy and microscopy, to describe the diffraction pattern of a point source of light passing through a circular aperture or lens. It takes into account the wavelength of light, the diameter of the aperture, and the distance from the aperture to the observation point. The equation is also applicable to other forms of wave phenomena, but it is most commonly used for light due to its small wavelength and its significance in optical systems.

- #1

mssm22

- 1

- 0

the airy disk equation is d= 1.22 lambda / NA

my question is:

lambda is the wavelength in medium or in vacuum?

thanks in advance

Physics news on Phys.org

- #2

phyzguy

Science Advisor

- 5,224

- 2,269

The Airy Disk Equation is a mathematical formula used to describe the diffraction pattern of a point source of light passing through a circular aperture or lens. It takes into account the wavelength of light, the diameter of the aperture, and the distance from the aperture to the observation point.

The Airy Disk Equation is used in various fields of science, such as astronomy, microscopy, and telecommunications. It helps scientists understand the behavior of light as it passes through different mediums and is crucial in determining the resolution and image quality of optical systems.

Lambda, represented by the Greek letter λ, refers to the wavelength of light. It is a crucial component of the Airy Disk Equation as it determines the size and spacing of the diffraction pattern. The larger the wavelength, the larger the Airy disk and the less sharp the image will be.

The medium through which light travels can affect the Airy Disk Equation. In a vacuum, the wavelength of light remains constant. However, in a medium such as water or air, the wavelength of light is shorter, leading to a smaller Airy disk and sharper image.

Yes, the Airy Disk Equation can be applied to other forms of wave phenomena, such as sound and radio waves. In these cases, the wavelength would refer to the respective wavelength of the wave being studied. However, the equation is most commonly used for light due to its small wavelength and its importance in optical systems.

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