Bubbles in thermometer
On Monday, February 11, 2013 6:30:39 AM UTC, Ian Bingham wrote:
Does anyone know how to get bubbles out of the thread of a Met.Office pattern minimum thermometer? Actually, I do know how it’s usually done. You gently heat the thermometer and the expanding alcohol carries the bubbles up to the reservoir at the top, where they disappear. I’ve done two successfully, but the trouble this time is that the bubbles are in the lower half of the scale and there seems no way I’m going to get them up to the top by heating. Ian Bingham, Inchmarlo, Aberdeenshire.
Bang the thermometer lightly on a telephone directory! Bubbles should then rise!
Steve J
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