UV Image of Sun: Temp Variations

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Homework Help Overview

The discussion revolves around interpreting ultraviolet images of the sun, specifically regarding the relationship between brightness and temperature in these images.

Discussion Character

  • Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • Participants explore the idea that brighter areas in UV images may indicate higher temperatures, while darker areas may suggest lower temperatures. There is a consideration of the relationship between brightness, photon intensity, and temperature, as well as questions about the visibility of UV light through goggles or scopes.

Discussion Status

Participants are actively questioning and clarifying assumptions about the interpretation of UV images and the implications of brightness on temperature. Some guidance has been offered regarding the relationship between brightness and photon intensity, but no consensus has been reached.

Contextual Notes

There is an acknowledgment of potential misconceptions regarding the interpretation of brightness in UV images, as well as the limitations of viewing UV light with standard equipment.

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Hi... Apologies if this is in the wrong section but it is kind of homework related.

I'm looking at an ultraviolet image of the sun... Would I be right in saying that brighter areas represent higher temperatures and darker regions represent lower teperatures?
 
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grscott_2000 said:
Hi... Apologies if this is in the wrong section but it is kind of homework related.

I'm looking at an ultraviolet image of the sun... Would I be right in saying that brighter areas represent higher temperatures and darker regions represent lower teperatures?
Brighter simply means more photons per unit area (intensity), i.e. more recombination reactions, so that doesn't necessarily imply higher temperature, but it could. The reaction rate is related to temperature as well as particle density.

Darker usually implies cooler.
 
Is it possible to view things in the UV with goggles or scopes?
 

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