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Crookes radiometer
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Product Description
The Crookes Radiometer, also known as a light mill, is a scientific apparatus consisting of a glass bulb containing a partial vacuum and a rotor with vanes coated black on one side and white or silver on the other. When exposed to light or radiant energy, the vanes rotate due to differential thermal transpiration, demonstrating principles of gas kinetics and energy conversion. It is commonly used for educational demonstrations of light pressure and thermodynamics.
Description
Primary Uses
Laboratory Applications
- Demonstrates conversion of radiant energy into mechanical motion in physics and chemistry labs.
- Used to illustrate the effects of light pressure and gas molecule behavior under partial vacuum.
- Serves as a practical tool for teaching energy transformation principles in educational settings.
- Utilized in experiments investigating thermal transpiration and molecular kinetics.
Industrial Applications
- Rarely used directly in industry but sometimes employed in educational training facilities associated with industrial research.
- Utilized in prototype demonstration models for sensor development based on light or thermal energy.
Secondary Uses
Other Industrial and Educational Uses
- Serves as a decorative scientific instrument or novelty item in offices and classrooms.
Employed as a teaching aid in museums and science centers for public science education.
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