Pascal Principle with photons in a U tube

In summary, the conversation discusses the concept of an U tube with reflective walls and sliding reflective discs, with different diameters on each end. The question being explored is whether the Pascal principle is still valid in this situation, considering the effects of light pressure. There is also a request for further insight on the topic.
  • #1
DaTario
1,091
45
Hello,

Supose you have an U tube, in which the inner walls are made absolutelly reflective. Now, put a termical state (temperature T) for the radiation field inside the tube and close it with reflective discs which can slide without friction. Supose further that de diameter of the tube in its terminations are not equal. For the sake of definiteness, let's assume 2 sq meters cross section in one side and 10 sq meters in the other. My question is: Taking into account light pressure effects , is the Pascal principle valid in this context ?


Best Regards

DaTario
 
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  • #3
Here I seem to have repeated the question but with the title explaining more correctly my point.

Best Regards.
 

FAQ: Pascal Principle with photons in a U tube

What is Pascal's Principle with photons in a U tube?

Pascal's Principle is a fundamental law of fluid mechanics that states that pressure applied to a confined fluid will be transmitted equally in all directions. In the case of photons in a U tube, this principle can be applied to explain the behavior of light particles as they travel through a confined medium.

How does Pascal's Principle apply to photons in a U tube?

In a U tube, photons are confined to a specific path and encounter multiple surfaces as they travel. According to Pascal's Principle, the pressure that is applied to one end of the tube will be transmitted equally throughout the entire tube, causing the photons to behave in a predictable manner.

What is the significance of studying Pascal's Principle with photons in a U tube?

Studying the behavior of photons in a confined space can help us better understand the properties of light and its interaction with matter. It also has practical applications in fields such as optical communications and fiber optics.

Can Pascal's Principle with photons in a U tube be applied to other forms of energy?

Yes, Pascal's Principle can be applied to any form of energy that travels through a confined medium, such as sound waves in a tube or electrons in a wire. It is a fundamental principle that applies to all types of energy transmission.

How does the behavior of photons in a U tube illustrate Pascal's Principle?

As photons travel through a U tube, they encounter multiple surfaces and are confined to a specific path. This confinement causes the pressure to be transmitted equally throughout the tube, leading to the predictable behavior of the photons. This is a direct illustration of Pascal's Principle in action.

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