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Anonymous users2024-02-11The discovery of gravitational waves validated the last prediction of general relativity that was not directly tested experimentally, but the cognitive revolution brought about by gravitational waves did not stop there. Gravitational waves open up a whole new window into the universe beyond electromagnetic radiation (optical, infrared, radio, X-ray, etc.) and particles (neutrinos, cosmic rays) – we have never been able to see the universe in such a way. In the new window of gravitational waves, we no longer rely on electromagnetic fields and matter particles to observe the universe - what we feel is the tremor of space-time itself!
The first directly detected gravitational wave event by Ligo (supposedly) came from the merger of two stellar-mass black holes. Before the two black holes merge, they will stir up the surrounding space-time as they orbit each other, emitting ripples of gravitational waves in all directions. These gravitational waves take away some of the gravitational potential energy of the binary black hole system, causing the two black holes to orbit closer and faster.
After the two black holes finally merge, the fused big black hole will go through a few "swings" before it fuses into a perfect spherical shape. <>
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Anonymous users2024-02-10Gravitational waves are generated in the extreme chaos immediately after the birth of the universe from the great **, just like the "cry" sound made by the universe when it was first born. Albert Einstein predicted the existence of gravitational waves in his general theory of relativity, and the scientific community has been searching for gravitational waves for more than 100 years. An international team of scientists reported in a new issue of the journal Nature on August 20, 2009, that they have finally locked in the detection range of gravitational waves.
Using the "Laser Interferometer Gravitational Wave Observatory" in the United States, the research team successfully pinpointed the "infested range" of gravitational waves, showing that their energy value is much smaller than originally speculated. They expect the detector to be 1,000 times more sensitive by 2014, with a high chance of direct observation of gravitational waves.
The researchers say their findings are "the first meaningful experimental advances" in the search for gravitational waves, and if they can be detected in the near future, it will greatly advance the understanding of the birth of the universe and the nature of space-time. That's why scientists from all over the world are actively involved in this work. In this article, published in the journal Nature, the list of authors is not the usual few or a dozen names, but 79 universities, laboratories and research institutes around the world.
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Anonymous users2024-02-09At the end of the 20th century, astronomer Hubble observed celestial objects with the world's largest telescope on Mount Wilson in the United States and discovered some unexpected phenomena: the light from the spiral nebula regularly turned red. The farther away from us is the nebula, the longer the light waves.
The most plausible explanation is the so-called "double effect": the light waves from the diffuse nebula are transformed into longer (red de) wavelengths than those from the stationary nebula. We can also observe this dual effect when an ambulance blows its whistle past us:
As the ambulance moved away, the whistle became quieter and quieter. This means that our ears receive sound waves that have a long duration.
Hubble's discovery suggests that nebulae are spreading and diverging, and that the rate of this separation is increasing as we move farther and farther away from us. It is likely that this phenomenon originated from a long time ago what people called the "Great Collision" or "First Loud Noise". According to this new theory, all radioactive energy and matter in the universe were generated by that great **.
The universe still seems to be expanding, just not as fast as it used to be. The observed nebula motion seems to support this hypothesis.
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Anonymous users2024-02-08Einstein's theory of relativity states that when a photon departs from the surface of a star, a part of the energy is lost when it is out of the gravitational control of the star, and as a result, the wavelength of the photon becomes longer, that is, the spectral lines of the star's spectrum move towards the red end, a phenomenon called gravitational redshift. The magnitude of the redshift is directly proportional to the mass of the star and inversely proportional to the radius of the star.
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Anonymous users2024-02-07Redshift. It refers to what is observed during the feast.
Cosmic ray. Reduced frequency.
causes the corresponding visible light color to shift towards the lower end of the spectrum (which is.
Theory of the expansion of the universe.
The connection between this and the gravitational effect is that the wavelength of cosmic rays is gradually elongated under the action of gravity.
According to. The principle that the speed of light does not change.
The frequency of the resulting rays decreases.
Causes redshift in rays.
Now to explain gravitational waves, although they are all waves, but the difference is 108,000 miles, gravitational waves are ripples that bend in space-time, and energy is transmitted in the form of waves. Gravitational waves are only more pronounced in the collision of massive stars (such as neutron stars or black holes).
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