A vacuum formed above the column of mercury in a mercury barometer.
- Make two nested fields, then shrink the internal one to produce a Torricellian vacuum between the two fields.
- As early as 1670, a French scientist, observed a bluish phosphorescence in the Torricellian vacuum of a barometer, after the mercury column had been shaken up and down.
- I was concerned however, that the air at the top of the upright would be at a very low pressure, (Torricellian vacuum), and hence a regular airpump would not work.
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Line breaks: Tor¦ri|cel¦lian vac¦uum
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