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How the Universe Works – The Great Secret of Black Holes – Space Discovery Documentary
A black hole is a mathematically defined region of spacetime exhibiting such a strong gravitational pull that no particle or electromagnetic radiation can escape from it. The theory of
general relativity predicts that a sufficiently compact mass can deform spacetime to form a black hole. The boundary of the region from which no escape is possible is called the event
horizon. Although crossing the event horizon has enormous effect on the fate of the object crossing it, it appears to have no locally detectable features. In many ways a black hole acts like
an ideal black body, as it reflects no light. Moreover, quantum field theory in curved spacetime predicts that event horizons emit Hawking radiation, with the same spectrum as a black
body of a temperature inversely proportional to its mass. This temperature is on the order of billionths of a kelvin for black holes of stellar mass, making it essentially impossible to observe.
Objects whose gravitational fields are too strong for light to escape were first considered in the 18th century by John Michell and Pierre-Simon Laplace. The first modern solution of general
Black holes of stellar mass are expected to form when very massive stars collapse at the end of their life cycle. After a black hole has formed, it can continue to grow by absorbing mass from its
Despite its invisible interior, the presence of a black hole can be inferred through its interaction with other matter and with electromagnetic radiation such as visible light. Matter falling
Channel: Relaxation Nature
Published: 2019-01-29 04:02:41
Survival skills: Catch centipede and grilled on clay for food – Cooking centipede eating delicious
Hi, this video I want to show you about: Survival skills: Catch centipede and grilled on clay for food – Cooking centipede eating delicious
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– Cow penis soup on clay for food: https://youtu.be/rIHJEeyKG3M
Channel: Food my village
Published: 2018-10-05 09:29:57
Top 10 Magic Secrets Of The Year Finally Revealed | Shin Lim | David Blaine | AGT | FactoFusion
Here are the top 10 greatest magic reveals of the year, from some of the world’s greatest ever magicians. The likes of David Copperfield, David Blaine, Shin Lim, James More are all on display in this video. These magicians have been mystifying people for years with their amazing talent, and we have tried our best to reveal some of their best tricks.
So, be it the famous Sword Stabbing trick, or Shin Lim’s amazing card illusion, this video will unlock this year’s top 10 magic secrets!
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Below is the featured list of the year’s Top 10 greatest magic tricks revealed:
So guys, which magic reveal did you like the most?
Thanks for watching!
Published: 2018-12-28 09:34:46
World Dangerous Fast Machines Destroys Everything Modern Technology Heavy Machinery Crush Skills
Channel: Machines Factory
Published: 2018-08-29 09:20:13
Hmong new movie Npis thiab Maum awj txoj kev hlub Tsis nco txaj muag
Caws sawv daws los saib movie tshiab tsiab lom zem heev nawb
Channel: Hmoob Li Movie Channel
Published: 2018-12-18 00:14:08