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单词 time signal
例句 time signal
He did not own a working clock; generally he depended on the TV for time signals, but today was Interspace Horizons Day, evidently. Do Androids Dream of Electric Sheep? 1968-01-02T00:00:00Z
Using the call signal GBR, the station transmitted time signals from Greenwich and Morse code messages from the Foreign Office, as well as news updates and Christmas greetings. London calling: New Science Museum gallery celebrates ‘Information Age’
When it’s dark, we produce melatonin, which acts as a time signal to the body, telling it we should be sleepy. Birds, buds and bright days: how spring can make us healthier and happier 2020-03-29T04:00:00Z
Transitions: Have you used clear transitions and time signals to establish chronology and connect important ideas? Writing Guide 2021-12-21T00:00:00Z
Depending on where you are in the United States, those frequencies will bring you to WWV and WWVH, two extremely accurate time signal stations. These radio stations don’t play news, talk shows or music. But they do broadcast very, very accurate time signals. 2020-01-24T05:00:00Z
They do this using time signals from GPS satellites’ ultra-precise atomic clocks. GPS glitch threatens thousands of scientific instruments 2019-04-02T04:00:00Z
The equipment, known as grade time signals, was designed to halt trains that are moving too quickly. Why Your Subway Train Might Start Moving Faster 2018-12-10T05:00:00Z
It took almost a century to apply the theory of relativity to correct the time signals from satellites, thus enabling the global positioning functions on smartphones. Pro-science budget is not enough for a Brexit world
Eventually, the invention of the telegraph allowed for the transmission of time signals across the wires, which allowed the dropping of a time ball to be somewhat more automated. The Surprising Origins of the New Year’s Eve Ball Drop Tradition 2016-12-30T05:00:00Z
The clock also takes its time signal from the GPS that drives the speedo, so it should be correct to about one millionth of a second. Bloodhound Diary: Precision and accuracy 2014-05-21T04:00:00Z
They were controlled by two mechanical clocks at the Royal Greenwich Observatory - hence their official name, the Greenwich time signal. The comforting tone of the hourly radio pips 2014-02-05T15:36:27Z
BBC Radio regularly broadcasts the same time signal used to set the speaking clock — affectionately known as the pips. A question of time 2014-01-22T18:20:04.418Z
The clock, which was made in 1874, was the first to be used for its instantly recognisable pip time signal. In pictures: Greenwich in time 2012-07-28T02:33:43Z
And it will zoom in on pulsars, the dead stars that emit beams of radio waves that sweep across the Earth like super-accurate time signals. Nations to share giant telescope 2012-05-25T14:30:22Z
And it will zoom in on pulsars, the dead stars that emit beams of radio waves which sweep across the Earth like super-accurate time signals. Decision due on giant telescope 2012-05-25T01:47:58Z
That has led to worries that mismatched time signals could cause navigation problems, since even small errors in a time signal would mean positions being off by tens of metres. Leap seconds: Their time has come 2012-01-12T16:04:23Z
At a quarter to twelve he was called again to receive time signals. The Wireless Officer 2011-10-24T02:00:17.560Z
His reliable time sources include the national radio time signal operated by NPL, which provides the time pips on the radio, and internet time servers. At the third stroke... 2011-07-22T10:17:33Z
So a range-finder on a battleship can in a short time signal to the gun-pointer just how far away a certain hostile ship or a target may be. Two Boys of the Battleship or For the Honor of Uncle Sam 2011-06-07T02:00:13.313Z
The computer operating the Greenwich time signal, most popularly known as the 'pips', stopped working on Tuesday evening live on BBC Radio 4. AUDIO: Consternation as Radio 4's pips go missing 2011-05-31T22:38:33Z
Compare your watch with the time signals in the nearest telegraph office and find its correction referred to standard time. A Text-Book of Astronomy 2011-01-05T03:00:57.347Z
Nor should it be forgotten that Airy “originated p. 171the automatic system by which the Greenwich time signals are transmitted each day throughout the country.” Springtime and Other Essays
This is common to all offices and may be operated by a special key in the dispatcher's office, thereby enabling him to send out time signals over the telephone circuit. Cyclopedia of Telephony and Telegraphy, Vol. 2 A General Reference Work on Telephony, etc. etc.
At the same time signal of recall was made to the pilot of the boat; but she did not return until after the action. The Great Events by Famous Historians, Volume 14
From time to time signal rockets puffed in the sky. Armageddon—2419 A.D.
That you cannot transmit at the hours reserved for naval radio stations to send out the time signals by which navigators set their chronometers, or when operators are broadcasting, goes without saying. Walter and the Wireless
The screen had already been rigged to flash the information into a computer, which in turn gave a time signal to the robot pilot that would turn on the drive at precisely the right instant. Islands of Space
In order to determine the longitude of Gibraltar, it was necessary that time signals should be sent by telegraph from the Royal Observatory. The Reminiscences of an Astronomer
Through Professor William Weber he was introduced to the science of electro-magnetism, and they devised an experimental telegraph, chiefly for sending time signals, between the Observatory and the Physical Cabinet of the University. Heroes of the Telegraph
Don't expect to get Arlington time signals and the big cableless stations if your receiver is made for short wave lengths. The Radio Amateur's Hand Book
The wireless apparatus was still rigged, but we listened in vain for the Saturday-night time signals from New Year Island, ordered for our benefit by the Argentine Government. South: the story of Shackleton's 1914-1917 expedition
During the voyage in daytime he would at one time signal to "sail in column," and at another signal "abreast in line." Hellenica
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