More on super-reflective surfaces.

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The discussion centers on the theoretical concept of super-reflective materials that reflect all incident energy without absorption. Participants clarify that a true one-way mirror, which allows light to pass in one direction while reflecting it in the opposite direction, is not feasible due to thermodynamic principles. The conversation emphasizes that if a material reflects all light, it cannot function as a window, as no light would penetrate for observation. Theoretical implications and practical limitations of such materials are explored, highlighting the need for clarity in definitions.

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Joseph King
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So, I'm just going to suggest a circumstance, and leave it up for discussion. I recently read an interesting forum on super reflective material in which all energy is reflected (all theoretical, of course) and none of it is absorbed by the material. Now, say we construct a one way mirror where the other side acts as a window like in interrogation rooms. What would it look like from an observer's standpoint at different positions and with or without sources of light on either side of the material. Have at it!
 
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It wouldn't be a one-way mirror if all the light was reflected, as the properties of the material would keep light from passing through from either side. Then it's just a really good mirror.
 
As Drakkith said, if you have a material that reflects part of the light and let's part of it pass through it is not super reflective.
But maybe you meant something else. Maybe a mirror/sheet of glass that let's all light pass that hits one side of the sheet but completely reflects all light that hits the other side. Such a material is not possible since it would violate thermodynamics.
 
Joseph King said:
So, I'm just going to suggest a circumstance, and leave it up for discussion. I recently read an interesting forum on super reflective material in which all energy is reflected (all theoretical, of course) and none of it is absorbed by the material. Now, say we construct a one way mirror where the other side acts as a window like in interrogation rooms. What would it look like from an observer's standpoint at different positions and with or without sources of light on either side of the material. Have at it!

Welcome here to Physics Forums!

When you describe reading an "interesting forum" about a "super reflective material" it is always useful if you post your reference for this source. Others can read that and then give better, more useful responses. Thank you.

As the others have already said, if a material reflects "all" the incident energy, then no light will enter the "observation room".
 

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