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![]() Cecil Moore wrote: Steve Nosko wrote: Most certainly idle minds will play... "Richard Clark" wrote: ...You could never support the column within it as it would draw a vacuum in its collapse under the influence of gravity (AKA barometer). OOPS. Tilt... Er...uh. Don't build it like that. "Tilt" is very good advice for a variable mercury column. In fact, the tuning length of the column of mercury could be controlled simply by tilting the tube of mercury at an angle away from vertical in the direction of horizontal. -- 73, Cecil http://www.qsl.net/w5dxp How much does the length change when you tilt it at 45 degrees? ac6xg |
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