Investigatory project help pleeeaassee

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To stand out at the upcoming science fair, the focus is on creating an interactive project that is both innovative and engaging. A proposed idea is a heat-powered fan, which involves building a thermoelectric generator. Suggestions include incorporating elements of magic or unique physics concepts to enhance the project’s appeal. Additionally, using affordable Helium Neon Lasers can add an interesting dimension to the project. The goal is to create a fun and educational experience that also contributes to the physics grade.
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Hi! I really want to make a difference in my school's science fair on january.. Usually, the interactive projects are always similar and they aren't any fun at all. I want to win at the contest and this interactive science project is also the basis for majority of my physics grade.. please help me.. I want it to be fun.. maybe magic associated with Physics or any innovations that is not yet so common in the market would be helpful.. email me at honz415@yahoo.com... please.. help me.. =)
 
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actually, I'm thinking of creating a heat-powered fan.. but to do that, it would require me to create a thermoelectric generator as well.. --> how would i do that?
 
You can buy Helium Neon Lasers from hardware stores quite cheaply nowadays. You can do lots of neat stuff with a laser.

Claude.
 
Hello! Let's say I have a cavity resonant at 10 GHz with a Q factor of 1000. Given the Lorentzian shape of the cavity, I can also drive the cavity at, say 100 MHz. Of course the response will be very very weak, but non-zero given that the Loretzian shape never really reaches zero. I am trying to understand how are the magnetic and electric field distributions of the field at 100 MHz relative to the ones at 10 GHz? In particular, if inside the cavity I have some structure, such as 2 plates...
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