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Вопрос № 223254 - Английский язык

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Only at the end of the 19th century electricity began to play its part in modern civilization. The man who achieved more in this field of practical engineering than any of his contemporaries was the American inventor, Thomas Alva Edison. He became interested in the problem of electric lighting. He knew what had been done in the field of electric lighting before his time, and he had seen some devices of his contemporaries, such as arc-lamp illuminations, which had been installed here and there. Two sticks of carbon, nearly touching, can be made to produce an electric arc which closes the circuit. Many scientists and inventors working in this field knew that only incandescent electric light - produced by some substance glowing in a vacuum so that it cannot burn up - could be used instead of gas lighting.
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  • M. Lomonosov was the first who discovered electricity.
  • Incandescent electric light is produced by some substance glowing in a gas.
  • Many scientists and inventors knew that only glowing electric light could be used instead of gas lighting.
  • Two sticks of carbon can produce an electric arc.
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Вопрос задал(а): Анонимный пользователь, 10 Ноябрь 2020 в 00:16
На вопрос ответил(а): Анастасия Степанова, 10 Ноябрь 2020 в 00:16

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Вопрос № 347501

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Only at the end of the 19th century electricity began to play its part in modern civilization. The man who achieved more in this field of practical engineering than any of his contemporaries was the American inventor, Thomas Alva Edison. He became interested in the problem of electric lighting. He knew what had been done in the field of electric lighting before his time, and he had seen some devices of his contemporaries, such as arc-lamp illuminations, which had been installed here and there. Two sticks of carbon, nearly touching, can be made to produce an electric arc which closes the circuit. Many scientists and inventors working in this field knew that only incandescent electric light - produced by some substance glowing in a vacuum so that it cannot burn up - could be used instead of gas lighting.
M. Lomonosov was the first who discovered electricity.
Incandescent electric light is produced by some substance glowing in a gas.
Thomas Alva Edison became interested in the problem of telegraph systems.
Two sticks of carbon can produce an electric arc.

Вопрос № 284560

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Electricity is the power that has made possible the engineering progress of today. In fact, electricity has always been with a man, but only within the last few centuries he has learned to apply it.
One hundred years ago there were neither electric lamps, nor electric motors, nor telephone, nor radio. Now electricity is everywhere. We use electricity in our homes and in buildings where we work or study. Electric lamps light our rooms. The uses of electricity in our homes do not end with producing light. How many electric motors are working in our homes! Electric motors operate washing machines, refrigerators, vacuum cleaners, fans, clocks, and other electrical appliances.
Hundred years ago people lit their homes with electric lamps.
There exist refrigerators without electric motors.
Computers operate washing machines.
it is impossible nowadays to live without electricity.

Другие вопросы по предмету Английский язык

Вопрос № 223255

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Modern telegraph systems are based upon the fact that electric current will flow through a wire which forms a circuit. The circuit can be broken to interrupt the flow of electricity and closed again for a short time by a key to send an electrical impulse through the circuit. When the key is pressed the circuit is closed. Electricity from the battery flows through the wire and earth circuit and causes the buzzer to make a noise. Using the Morse code, or some other code, messages can be sent in this way.
Ancient telegraph systems are based upon the fact that electrons flows through a drum.
The circuit can be interrupted the flow of water.
The circuit can be closed for a short time by a coil.
Electrical impulses will not flow through a wire if the circuit is broken.

Вопрос № 223256

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Through the years other machines were invented, both to receive and transmit messages. These machines are called teleprinters. They use a code called the International 5-unit teleprinter code instead of the Morse code. It is called a "5-unit" code because a letter or a figure is made up of five impulses of electrical current, either positive or negative - three positive, two negative; one positive, four negative; and so on. All the letters are the same length in time. This is quite different from the Morse code, where E is the shortest and "nought" the longest.
Teleprinters use the Morse code.
New machines could only transmit messages.
In the Morse code all the letters are the same length in time.
In the International 5-unit teleprinter code all the letters take the same length of time to transmit.

Вопрос № 223257

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A teleprinter is really a machine which sends a typewriter message over a telegraph circuit. In fact, it looks like a typewriter and has the same keyboard. Every time one of the keys on the keyboard is pressed it sends the five impulses that make one letter or figure. It also sends a "start" impulse. This sets the teleprinter (or any number of them that are connected) at a receiving station ready to print the letter that follows immediately. A "stop" impulse brings all the teleprinters to rest after each letter or figure.
If one of the keys on the keyboard is pressed the teleprinter sends some impulses.
A “start” impulse brings the teleprinter to rest.
One of the key on the keyboard sends a “stop” impulse.
A teleprinter is like a typewriter and has the same keyboard.

Вопрос № 223258

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In the early days of the telegraph and the telephone, men observed that signals sometimes jumped across the space between wires running next to each other, so that messages sent to one person went to another. They realized that electricity could pass through the air as well as along a wire. Just as sound travels through the air in waves, so electricity travels through the air in what we call radio waves. A. S. Popov, a Russian inventor, had the idea of sending messages by radio waves, or "by wireless". He constructed a coherer detector for the study of lightning discharges and his receiver was described in 1895.
Sound doesn’t travel through the air in wires.
Electricity can pass only through the air.
Messages sent to one person can return.
Electricity passes along a wire, but it may also passes through the air.
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