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Hollow replies
Answer for the clue "Hollow replies ", 6 letters:
echoes
Alternative clues for the word echoes
Word definitions for echoes in dictionaries
Wikipedia
Word definitions in Wikipedia
Echoes may refer to: the plural of Echo
Usage examples of echoes.
Appleton, in fact, did his own experiments using transmitters in England and Geneva - and he too heard distinct long-delayed echoes - delayed up to twenty-five seconds - during a radio transmission from Eindhoven in 1929.
Although Lunan does not produce a map or chart of the Bootes constellation from these echoes, he claims they form other star systems.
He says there are several explanations for those mysterious echoes received in 1928 and '29, which he is presently investigating.
He is now certain that those echoes were produced in a way similar to that of others reported in recent years which can be attributed to natural disturbances in the ionosphere (the outer layers of Earth's atmosphere).
No other echoes known to have been picked up since can be arranged to produce the same map.
If, on the other hand, a radio telescope aims signals at a distant object, such as the moon, the echoes would take longer.
Stormer had rushed over to Hals's home and soon after arriving there ten minutes later found, to his astonishment, that not only were the echoes delayed, but the times in which they came over the ait actually varied from three to fifteen seconds!
The varying times between the signals and the echoes being - 8,11,15,8,13,3,8,8,8,12,15,13,8,8, seconds.
There are actually fourteen echoes shown here - not thirteen - an error that has been repeated ever since.
This was proved because the signals and echoes had an identical pitch of tone.
He had, he claimed, deciphered those original echoes from the twenties, and he had evidence to show that they could, in fact, form the coded message from an alien probe, or satellite, in orbit around Earth.
The curious pattern of delayed echoes was actually a pattern of star positions.
The echoes were reported in Europe in 1928 and '29 by two professors, Van der Pol and Carl Stormer, while listening in to signals from radio station PCJJ.
The upright line shows the order in which echoes were apparently received and recorded.
The delay times of the echoes, in seconds, are shown along the horizontal base line of the graph and their sequence number along the vertical line.