socratus
Posted:
Sun Jun 21, 2009 8:22 pm
Joined: 15 Oct 2004
Posts: 82
Location: israel
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Can a ideal black body be model of real Vacuum ?
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1.
In physics, a black body is an idealized object that absorbs all
electromagnetic radiation that falls on it. No electromagnetic
radiation passes through it and none is reflected. Because no
light (visible electromagnetic radiation) is reflected or transmitted,
the object appears black when it is cold. However, a black body
emits a temperature-dependent spectrum of light. This
thermal radiation from a black body is termed black-body radiation.
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Studying the laws of the black body historically led to quantum mechanics
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Blackbody radiation is light in thermal equilibrium, light radiation with
a given temperature. It is the basic thermodynamic state of light. Because
light is the oscillation of a continuous electromagnetic field, the study
of blackbody radiation reveals how continuous fields can have a
temperature, something which contradicts classical physics. Because
the thermal state of light was so confusing before the advent of
quantum mechanics, the 19th century arguments that light has a
thermal equilibrium state were made very carefully.
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Today the black-body cavity may be thought of as containing a gas of photons
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An almost perfect black-body spectrum is exhibited by the
cosmic microwave background radiation., Hawking radiation is the
hypothetical black-body radiation emitted by black holes.
!!!
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Super black is an example of such a material, made from a
nickel-phosphorus alloy. More recently, a team of Japanese scientists
discovered a material even closer to a black body, based on
single-walled carbon nanotubes (SWNTs), which absorbs between
97% and 99% of the wavelengths of the light that hits it.
http://en.wikipedia.org/wiki/Black_body
2.
Max Laue (who won the Nobel Prize in Physics in 1914 )
called the model of a black body as the ‘ Kirchhoff's vacuum.’
3.
And I have naive question:
Can a ideal black body be model of real Vacuum T= 0K ?
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socratus
Posted:
Thu Nov 26, 2009 1:09 pm
Joined: 15 Oct 2004
Posts: 82
Location: israel
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Some more ‘ true’ Physical fables and fantasies.
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1.
The Big Bang.
Once upon a time, 20 billions of years ago, all matter
(all elementary particles and all quarks and their
girlfriends- antiparticles and antiquarks, all kinds of
waves: electromagnetic, gravitational, muons…
gluons field ….. etc.) – was assembled in a ‘single point ‘
=== .
I don’t agree with the ‘big bang’ theory because nobody
knows how the ‘ big bang’ can change into ‘single point ‘
if Hawking’s radiation from ‘ black hole’ doesn’t give it
to happen.
2.
Most of elementary particles were got in artificial way,
using accelerators. This way, in my opinion, is mistaken.
=== .
In the Ancient Egypt people believed in many gods with
human body and animal’s head. They thought they really
existed. For me these new discovered elementary artificial
particles are similar to Egyptian’s gods because we cannot
meet them into any atom, in any physical, chemical, biological
processes on our Earth.
In the Ancient Greek the people believed that sphinxes and
centaurs really exist. Maybe now some geneticists can create
a centaur, but it will be Devil’s work. I am sorry to tell that,
but it seems to me, physicists, creating such elementary
artificial particles look like those ‘some geneticists’.
( The mad CERN’s way.
http://www.spacekb.com/Uwe/Forum.aspx/astronomy/13338/The-mad-CERN-s-project ).
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3.
Once upon a time, 20 billions of years ago, there was ‘ bin bang’.
And every particle appears with its own spin as derivative from
the Big Bang.
== .
I think the spin of quantum particle doesn’t come from
big bang, but it comes with ‘ virtual particle from Dirac’s sea’.
Why?
We have the real particle – electron. Nobody doubts
it is a real particle. But a strange thing happens when it
interacts with Vacuum. All its physical parameters become
infinite. Why? Is it possible? What is the reason?
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The conditions of the ocean permitted to create different kinds
of fish. The terrestrial’s conditions permitted to create different
kinds of animals. And the ‘mixed’ conditions of water, earth
and air on Earth permitted to create, for example, birds, which
live and act in these three conditions.
And if we take Universe as a whole, it is Two- Measured:
close by Material ( Gravity) World exists Infinite Vacuum World.
The conditions in these two Worlds are different.
And when electron moves from Material (Gravity) World to the
Infinite Vacuum World its physical parameters changes.
" The law of conservation and transformation energy / mass"
is connected with electron’s transformation.
We know the electron is very important particle in our live.
It acts in Maxwell’s electrodynamics.
It acts in the atom.
But how electron acts in cell and in Outer space we don’t know.
We need time to understand this fact.
=== .
P.S.
Tell me what an electron is and I'll then tell you everything.
/ Somebody./
==== .
Another ‘ true’ Physical fables and fantasies:
The time that stretches and space that expands,
dark matter, dark energy, Higgs boson, quarks, gluons
and tachyons, axions and partons, qravitino , . . etc.
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P.S.
"One thing I have learned in a long life:
that all our science, measured against reality, is primitive
and childlike - and yet it is the most precious thing we have."
/ Einstein./
This quote is correct, because, at last, only Physics can
logically explain us the Ultimate Nature of Reality.
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