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the vacuum tube
vacuum tube
A vacuum tube is simply a tube with no oxygen nor carbon dioxide in it (aka no air).
Millman's theorem
A tube tester is a piece of electronic equipment designed to test the properties of a vacuum tube. The first tube testers were used in World War I to check the tubes in communication equipment.
who made the vacuum tubes
Kilobytes and vacuum tubes are not in the same category. At best, a twin triode vacuum tube is a single flip-flop and can hold 1 bit of information, making a vacuum tube about 0.000122 of a kilobyte.
a grid is a device placed in front of the image receptor which only allows xrays to travel directly through from the tube and prevent xrays which have been "scattered" from passing through to the image. This gives a much clearer resulting image. Grids are generally only used on thicker body parts where scattered xrays are more of an issue
The most common anticoagulant used in vacuum tubes for blood collection is ethylenediaminetetraacetic acid (EDTA). It is effective in preserving blood samples by binding to calcium ions, preventing coagulation.
an electron tube containing a near-vacuum that allows the free passage of electric current.
cellphone
* == 1st generation vacuum tube look like as a parallel electric bulb. _____ ----_____)