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| Тема |
 Re: LIGO закъсва яко [re: polu] |
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| Автор |
unperson (член) |
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| Публикувано | 24.02.16 19:10 |
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Има едно интересно възражение ето тук:
"On September 14, 2015, the LIGO (Laser Interferometer Gravitational-Wave Observatory) observed a "chirp" lasting about a fifth of a second (GW150914). Analyses of the signal suggest that it was produced by the cataclysmic collision of two black holes a billion light years away. This was probably the verification of the most dramatic prediction of Albert Einstein's General Theory of Relativity. Accordingly, we ought to have a critical look at the relevant experiment before we finally incorporate this great achievement into the body of scientific knowledge. (...) There is also something which appears to be too fortuitous about GW150914, as noted by the distinguished Indian astrophysicist Dr. Abhas Mitra: Given that the radius of Earth is 6,370 km, we can calculate the linear distance between the LIGO detectors at Livingstone and Hanford at around 2,500 Km. Because this distance is absolutely negligible compared with the distance to the origin of GW150914 (1.3 billion light years), both detectors should see the event almost simultaneously. There should be a delay of a few microseconds at most if both detectors received the signal from the sky above. However, the actual delay of seven milliseconds was very much larger, and is possible only if the source was almost perfectly aligned with a straight line joining Livingstone and Hanford."
Сега единият аргумент е глупав - ето този:
Because this distance is absolutely negligible compared with the distance to the origin of GW150914 (1.3 billion light years), both detectors should see the event almost simultaneously.
Огромната глупост обаче е при LIGO. Те определят максималното изоставане на сигнала между Ливингстон и Ханфорд, 10 милисекунди, като делят разстоянието по дъгата (great-circle distance), 3002 км, на скоростта на светлината. В цитата по-горе се твърди че разстоянието по права линия е 2500 км. Не знам дали това е точно, но LIGO дори не знаят че има такъв проблем. Големи умници.
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