| 单词 | gravitational waves |
| 释义 | gravitational waves Waves propagated through a gravitational field. The prediction that an accelerating mass will radiate gravitational waves (and lose energy) comes from the general theory of relativity. Many attempts have been made to detect waves from space directly using large metal detectors. The theory suggests that a pulse of gravitational radiation (as from a supernova explosion or black hole) causes the detector to vibrate, and the disturbance is detected by a transducer. The interaction is very weak and extreme care is required to avoid external disturbances and the effects of thermal noise in the detecting system. So far, no accepted direct observations have been made. However, indirect evidence of gravitational waves has come from observations of a pulsar in a binary system with another star |
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