Origin of filament
Examples from the Web for filament
The B voltage gives the plate a positive charge to attract electrons from the filament.
When you connect the A battery, the filament of the tube is heated to release negatively charged electrons.
Electrons travel through the partial vacuum inside the tube, flowing from the filament to the positively charged plate.
Many tubes also have small structures, known as grids, between the filament and the plate.
There is no oxygen to combine with the filament; so the lamp does not burn out.
The filament can be instantly burned out by passing a current of too high pressure through it.Things a Boy Should Know About Electricity|Thomas M. (Thomas Matthew) St. John
The filament of an electric lamp is very fine and therefore offers considerable resistance.
That is all right, but while they were away the grid got some electrons from the filament to take their places.
The audion is a glass bulb like an electric light bulb which has in it a thread, or filament, of metal.
British Dictionary definitions for filament
- the stalk of a stamen
- any of the long slender chains of cells into which some algae and fungi are divided
- a long structure of relatively cool material in the solar corona
- a long large-scale cluster of galaxies
Word Origin for filament
Word Origin and History for filament
1590s, from Modern Latin filamentum, from Late Latin filare "to spin, draw out in a long line," from Latin filum "thread" (see file (v.)).
Medicine definitions for filament
Science definitions for filament
- A fine wire that gives off radiation when an electric current is passed through it, usually to provide light, as in an incandescent bulb, or to provide heat, as in a vacuum tube.
- A wire that acts as the cathode in some electron tubes when it is heated with an electric current.