Who invented the first dial telephone? Detailed answer

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Who invented the first dial telephone? Detailed answer

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Who invented the first dial telephone?

A patent for the first telephone set with dialing and an automatic switchboard for it was issued in 1891 to the American Elmon Strowger, a resident of Kansas City.

The inventor had nothing to do with telephony - he was an undertaker. There were two funeral homes in the city. Upon learning that the wife of a competitor got a job as a young lady at a telephone exchange, Strowger became worried: when subscribers ask to be connected to an undertaker, she certainly sends callers to his competitor! And he came up with a system that allows each subscriber to independently connect to the desired number directly from home, without intermediaries.

Strowger's first telephone was a push-button. But in 1904, the inventor introduced a rotary dialer into the device with the arrangement of numbers that is familiar to us now: zero at the bottom, one at the top, the numbers go counterclockwise.

Author: Kondrashov A.P.

Random interesting fact from the Great Encyclopedia:

Is it far from the stars?

There are stars in the universe that are so far away from us that we don't even have the ability to know their distance or set their number. But how far is the nearest star from Earth? The distance from the Earth to the Sun is 150 kilometers. Since light travels at 000 km/sec, it takes 000 minutes for it to travel from the Sun to the Earth.

The stars closest to us are Proxima Centauri and Alpha Centauri. The distance from them to the Earth is 270 times greater than the distance from the Sun to the Earth. That is, the distance from us to these stars is 000 times more than 270 kilometers! Their light takes 000 years to reach Earth. The distance to the stars is so great that it was necessary to develop a unit for measuring this distance. It's called a light year. This is the distance light travels in one year. This is approximately 150 trillion kilometers (000 km).

The distance to the nearest star exceeds this distance by 4,5 times. Of all the stars in the sky, only 6000 can be seen without a telescope, with the naked eye. Not all of these stars are visible from the UK.

In fact, looking at the sky and watching the stars, they can be counted a little over a thousand. A powerful telescope can detect many many times more.

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