| Solar Radiometer |
|
| The
solar radiometer also known as a light windmill was invented in 1873 by the english
physicist Sir Edward Crooks. |
| The radiometer
uses light and converts it to energy and hence motion. |
| The radiometer has a
glass globe which is a sealed vacuum to prevent air resistance and the globe contains a wheel that is
precisely balanced. |
| Each
paddle on the wheel has a dark side and a shiny metallic side. |
| The
dark side of the paddle absorbs more light than the metallic side creating
pressure and producing motion. |
| The
solar radiometer works with warm light, that is sunlight or the light from electric
bulbs, but not cold neon light. |
|
|
