CE ÎNSEAMNĂ SCHWARZSCHILD RADIUS ÎN ENGLEZĂ?
Raza Schwarzschild
Raza Schwarzschild este raza unei sfere astfel încât, dacă toată masa unui obiect este comprimată în sfera respectivă, viteza de evacuare de pe suprafața sferei ar fi egală cu viteza luminii. Un exemplu de obiect mai mic decât raza lui Schwarzschild este o gaură neagră. Odată ce o rămășiță stelară se prăbușește sub această rază, lumina nu poate scăpa și obiectul nu mai este direct vizibil. Este o rază caracteristică asociată cu fiecare cantitate de masă. Raza Schwarzschild a fost numită după astronomul german Karl Schwarzschild, care a calculat această soluție exactă pentru teoria relativității generale în 1916.
Definiția Schwarzschild radius în dicționarul Engleză
Definiția razei Schwarzschild în dicționar este raza unei sfere ce înconjoară o gaură neagră neîncărcată, din care nu poate scăpa nici o informație din cauza forțelor gravitaționale.
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1
Astronomy: A Physical Perspective
8.4.1 The Schwarzschild radius Shortly after Einstein published his general
theory of relativity, Karl Schwarzschild worked out the solution for the curvature of
space-time around a point mass. He found that there is a critical radius at which a
...
2
Horizons: Exploring the Universe
The event horizon is the boundary between the isolated volume of space-time
and the rest of the universe, and the radius of the event horizon is called the
Schwarzschild radius, R5. A collapsing stellar core must shrink inside its
Schwarzschild ...
Michael Seeds, Dana Backman,
2013
3
Planet Earth: Cosmology, Geology, and the Evolution of Life ...
For this reason, the object is called a black hole. Only beyond a certain distance
from the singularity can light begin to escape. The distance is called the
Schwarzschild radius, after the German astronomer Karl Schwarzschild (1873-
1916) who ...
4
Einstein's General Theory of Relativity: With Modern ...
As we see, the metric apparently has a terrible flaw; it is singular at the
Schwarzschild radius. However, for a relatively small gravitating body like the
Earth, the Schwarzschild radiusis so small that we do not have to worry that our
metric breaks ...
Øyvind Grøn, Sigbjorn Hervik,
2007
Calculating the Schwarzschild Radius The escape velocity (see Chapter 4), Ve,
for a body of mass M and radius R is given by Ve2 = 2GMIR, where G is the
gravitational constant of Newtonian gravitation. For a body of mass, M, to have a
...
6
Revealing the Heart of the Galaxy: The Milky Way and its ...
an average density of that of the Sun but would have a Schwarzschild radius of
twice the distance of the Earth from the Sun. A black hole with the mass of the
Sun would have a radius of about 3 kilometers but a mean density of about 2 ×
1016 ...
7
Lifting the Scientific Veil: Science Appreciation for the ...
The use of this formula can also give us the Schwarzschild radius of an
astronomical body.32 As we have already seen, the Schwarzschild radius gives
us a region located a certain distance from the center of a massive body whose
escape ...
8
Universe: Solar System, Stars, and Galaxies
The event horizon is the boundary between the isolated volume of space-time
and the rest of the universe, and the radius of the event horizon is called the
Schwarzschild radius, Rs. A collapsing stellar core must shrink inside its
Schwarzschild ...
Michael Seeds, Dana Backman,
2013
9
Foundations of Astronomy
The boundary of the black hole is called the event horizon because any event
that occurs inside is invisible to outside observers. The radius of the black hole
R5 is the Schwarzschild radius. Schwarzschild's solution shows that if matter is ...
Michael Seeds, Dana Backman,
2012
10
The Life of Stars: The Controversial Inception and Emergence ...
The particular radius appearing in Schwarzschild's solution, which eventually
became known as the Schwarzschild radius, attracted the interest of physicists
and astronomers. If the radius of the star is much larger than its Schwarzschild
radius, ...
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The More Mass You Add To Black Holes, The Less Dense They Get
When scientists worked out the radius of two black holes smashed together, though, they ... The Schwarzschild radius of a Black Hole is proportional to its mass:. «io9, Ian 15»
How are Energy and Matter the Same?
You can define any mass by a distance known as its Schwarzschild radius, which is the radius of a black hole of that mass. So in a way, energy, matter, space ... «Universe Today, Nov 14»
The science of Interstellar: astrophysics, but not as we know it
... close to what is called the Schwarzschild radius of the object – essentially the event horizon of a black hole. There is simply no planet that can have this kind of ... «The Guardian, Nov 14»
Landmarks—The Curved Space around a Spinning Black Hole
That same year, the German mathematical physicist Karl Schwarzschild found ... called the “event horizon” at what became known as the Schwarzschild radius. «Physics, Feb 14»
If a coin-sized black hole were placed at Earth's center, what would …
A black hole with a Schwarzschild radius of about a centimeter, which would make it about the size of a coin, would have about the same mass as the Earth. «Slate Magazine, Feb 14»
Hawking's Views On Black Holes Continue To Evolve
This became known as the Schwarzschild Radius and it corresponds to the event horizon of ... Schwarzschild's 1916 paper assumed a fluid sphere which, upon ... «Forbes, Ian 14»
Gary K. Wolfe reviews Connie Willis
... Cretaceous'' and the more touching ''Schwarzschild Radius'') will miss them. Conversely, those who had the foresight to buy Willis's considerably larger 2007 ... «Locus Online, Iul 13»
At what point would the Earth become a black hole?
We're going to figure it out, and tell the tale of the Schwarzschild Radius. ... Schwarzschild considered this, and thought that a massive enough object packed ... «io9, Ian 13»
Milky Way's Black Hole Getting Ready for Snack
The point at which a stellar object can no longer escape being swallowed by a black hole is known as the Schwarzschild radius, a quantity whose value ... «Space Ref, Oct 12»
Off-Peek: Radio Telescopes Edge In on Plasma Jet Spewing from …
(The Schwarzschild radius is the size below which a given mass cannot be compressed without collapsing into a black hole.) "We saw something that was just ... «Scientific American, Sep 12»