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air presure pushes dirt into the vacuum cleaner.
In the motor used to turn the fan that creates the suction, though you might find magnets as closures too.
to clean faster
Yes, the phrase "his mouth was a vacuum cleaner" is a metaphor. It is used to convey that someone is eating or speaking voraciously or loudly, likening their mouth to a vacuum cleaner.
If the vacuum cleaner is powered by electricity this is used to turn the electric motor which is needed to create the suction or vacuum. That motor either has permanent magnets inside it, or the current passes through many "turns" of wire to create magnets when you switch the cleaner on. Early experiment in electricity showed that if a wire is moved in a magnetic field some current is created. Similarly, if a magnet is moved near to a wire the same result occurs. So, yes the cleaner does need a magnet.
Vacuum cleaners require a high power to weight ratio in the motor and for that reason a commutator motor is used although the lifetime is relatively short for this type of motor before the brushes need replacing.
Given the history of the vacuum cleaner, the Hoover is the best choice for that trade or common name.
A vacuum cleaner is a machine used to suck up dust. The amount a vacuum cleaner sucks, can be measured in a number of ways including airflow in litres per second and airspeed in metres per second.
Yes, everyone has use the vacuum at least once.
Vaccume Cleaner
3M Produces an electronic Vacuum cleaner. Just google 3m electronic vacuum cleaner and it will show up. Do not confuse this for being safe for cleaning live circuits. It is just ground protected to not short out circuitry.
The vacuum cleaner was invented to remove dirt and it's mostly used in homes as well as in industry.