A vacuum tube cannot function effectively in miniaturized electronic devices, as it is bulky and requires more space than modern alternatives like transistors. Additionally, vacuum tubes are less energy-efficient and generate more heat than solid-state components, making them unsuitable for low-power applications. They also lack the rapid switching capabilities of transistors, limiting their use in high-speed digital circuits.
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It means that the glass envelope has leaked and is no longer a vacuum. Air inside has oxidized the getter. They generally no longer work in this condition.
an electron tube containing a near-vacuum that allows the free passage of electric current.
when the vacuum sucks up things it goes through the tube and into the bag ...Unless you are talking about electronics, then a vacuum tube is used to form an amplifying circuit. Some tubes can emit cathode rays onto a screen (Cathode Ray Tube = CRT) to display a picture and some can function as diodes to regulate current flow.
forward bias is in the direction a junction or vacuum tube wants to conduct currentreverse bias is in the direction a junction or vacuum tube opposes conducting current
the vacuum tube
A vacuum tube is simply a tube with no oxygen nor carbon dioxide in it (aka no air).
Millman's theorem
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.
Vacuum tubes cannot eat. Perhaps you could word your question so as to be more specific for the type of answers desired. The word "something" is very broad and permits many answers.
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. _____ ----_____)
Vacuum tubes are typically evacuated of gases to create a vacuum inside. However, some specialized vacuum tubes may use inert gases like argon or neon to improve performance or provide specific characteristics.
Vacuum tubes cannot eat. Perhaps you could word your question so as to be more specific for the type of answers desired. The word "something" is very broad and permits many answers.
In 1907 American inventor Lee De Forest invented the three-electrode vacuum tube