Simulating scintillation (twinkling)

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In summary, the conversation is about setting up a lab experiment to create visible "terrestrial scintillation" by projecting an image through heat onto a wall. The individual is seeking advice on how to best accentuate the visibility, such as using a lot of heat or mixing hot and cold air, and controlling the distances between the wall, heat source, and projector. They also mention finding inspiration from "schlieren photography" and asking for ideas.
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kylie22
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hi all,

i would like to set up a small lab experiment to try to create visible "terrestrial scintillation", whereby one can see fluctuations in air density (turbulent air), like the rear of the jet in this image:

ACDSee_QVUltimate11_2018_07_19_00_03_20.png


i have sketched a small setup before i begin; the test will send a projected image through the heat to map what it does to the image as it hits the wall.
i am wondering how best to accentuate the visibility, is it about:

- having lots of heat from a source;
- mixing hot air with cold air;
- controlling the distances between wall, heat source and projector?

Rhino_2018_07_18_23_54_44.png


kylie
 

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FAQ: Simulating scintillation (twinkling)

What is scintillation?

Scintillation, also known as twinkling, is the effect of light appearing to flicker or vary in brightness. This can be caused by the movement of air and particles in the Earth's atmosphere, which causes the light to be refracted in different directions.

How is scintillation simulated?

Scintillation can be simulated using computer models and algorithms that take into account atmospheric conditions, light source properties, and viewing angles. These models use mathematical equations to calculate the variations in light intensity that would occur due to atmospheric disturbances.

What factors affect scintillation?

Atmospheric conditions, such as temperature, pressure, and humidity, play a major role in scintillation. Other factors that can affect scintillation include the size and shape of the light source, the angle of observation, and the distance between the light source and the observer.

Why is simulating scintillation important?

Simulating scintillation allows scientists to better understand and predict the effects of atmospheric disturbances on light. This can be useful in fields such as astronomy, where accurate measurements of starlight can be affected by scintillation. It also helps in developing technologies that can compensate for scintillation, such as adaptive optics.

What are some applications of scintillation simulation?

Scintillation simulation has various applications, including in satellite and ground-based remote sensing, laser communications, and astronomical observations. It is also used in the development and testing of instruments and techniques that are designed to mitigate the effects of scintillation.

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