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CMB is cosmic microwave background radiation. It is the radiation that is the basis for the Big Bang theory.
Wiki User
∙ 15y ago
Wiki User
∙ 9y agoCMB is an acronym for Cosmic Microwave Background. It could also mean Compagnie Maritime Belge, which is a maritime group.
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Center of gravity of human body?
That depends on your exact position! Standing normally, it might be in the area of the navel; if you lift your arms or your legs, the center of gravity will be higher, if you bend over, the center of gravity might actually be outside your body (somewhere in front of your navel or so), etc.
How do you specify frames of reference?
Frames of reference as defined for an observer : REST : If a body does not change its position with respect to the observer, then it is said to be "at rest" with respect to that observer.] MOTION : If a body continuously changes its position with repect to an observer, then it is said to be "in motion" with respect to that observer.
The sun shines in space as it does on Earth Yet it is freezing cold in space what causes the difference?
To understand the difference between relative temperature in space and on Earth, one must understand what causes temperature. Temperature is the amount of relative heat something has, heat being essentially the movement of energy in something. Earth is warm relative to the surrounding space because Earth represents a comparatively dense collection of matter. Earth is warm because its matter absorbs the energy from the sunlight (not in the sense that plants do for photosynthesis, but in the sense that a sunny beach is hotter in the light than in the shade). Space is just that, relatively empty, with a few particles here and there. There is little matter in space to absorb photons (light) from the sun, so there is little in space to heat up. It is only cold in that because there is nothing, there is no insulation, so anything subjected to space loses heat usually much faster than it gains heat. If space has a "temperature" it is the pervasive background radiation coming from all directions known as the Cosmic Microwave Background, or CMB. This radiation is the "echo" of the Big Bang, the remnant of the hot inflationary origin of our universe. It's only 2.7 degrees kelvin -- 2.7 degrees above absolute zero. A passive object far from any star (between galaxies, say) would reach an equilibrium temperature of about 2.7 K.
What is the big bang and what evidence is used to support it?
Cosmic microwave background radiation.There are several aspects of the Big Bang Theory supported by observed phenomena:The current universe is presumed to have a beginning state.Some galaxies appear to be moving away from us at speeds proportional to their distance. This is called "Hubble's Law," named after Edwin Hubble (1889-1953) who discovered this phenomenon in 1929. This observation supports the expansion of the universe and suggests that the universe was once compacted.The initial, very hot state that followed the Big Bang should have left some remnant of its heat. In 1965, Radioastronomers Arno Penzias and Robert Wilson discovered a 2.725 degree Kelvin (-454.765 degree Fahrenheit, -270.425 degree Celsius) Cosmic Microwave Background radiation (CMB) which pervades the observable universe. This is thought to be the remnant which scientists were looking for. Penzias and Wilson shared in the 1978 Nobel Prize for Physics for their discovery.The abundance of the "light elements" hydrogen and helium found in the observable universe (which would have been the first elements formed) is thought to support the Big Bang model of origins.The idea is that, since galaxies are moving away from each other now, then they used to be closer to each other. Extrapolating backwards in time, one can go back far enough to a time and place where all matter resided in a very small, dense region. called a singularity.This state would have been all energy, as matter could not have existed as we know it in an energy field so intense. The "Big Bang" was the release of that energy, creating the current era of spacetime.The energy dispersed and, as things cooled down, matter began to form. It's the expanding universe that is the evidence for the Big Bang.Replacing The Steady State TheoryThe Steady State Theory was an early, only partly scientific proposition put forth to explain how the universe around us created matter on a continual basis. Founded in large part on the ancient idea that our universe was a firmament, and only subject to margional changes, like those caused by us, the explosion of a star, or the effects of gravity as it pulls back the matter and energy from those stars and creates new objects, the Steady State Theory basically told us that the universe was always here and always would be...and also would remain the same size.The later advancement of science in new areas such as quantum theory, relativity, and Edwin Hubble's discovery that the universe was actually expanding, all pointed in a direction different from that of the Steady State Theory. This led astronomers and cosmologists to begin pondering what the universe would have looked like before its expansion. At some point in the past the universe must have been much smaller, but how much smaller could it have been?Quantum mechanics allows us to imagine and make practical predictions about how tiny the universe could have been in the past, which greatly helped the Big Bang Theory to catch on. It was suggested that the universe was at one point so tiny that it was the size of the tip of a needle, and was referred to as a singularity, much like the singularity of a black hole. But a black hole limitlessly pulls in everything around it, and there's no evidence of black holes exploding and creating new universes within our own. So the singularity idea faded away, though almost painfully slowly in some circles.Journalists, and sometimes scientists, will erronously state that there was once nothing, and then the Big Bang created the universe. This isn't correct. There was never "nothing." You can look at this in two ways. 1) Energy can be created from matter, and matter can be created from energy. In fact, matter pushed to the speed of light literally becomes energy. Thus, even if the universe were crushed under all it's own gravity at the speed of light into energy 13.7 or so billion years ago at the place where the big bang occured, there was still energy. There was still something. Then there's option 2) Maybe God created the uinverse, but He would still have been here before us so there could never have been nothing.With option 1, the universe began as energy packed so tight that even our theories of quantum mechanics cannot agree on what might have happened. It seems logical, at least on our common macroscopic level, that energy packed so tight would explode and begin expanding outward. And if we started from energy, that energy had to come from somewhere. Perhaps from some prior universe.
When was CMB Televisión created?
CMB Televisión was created in 2004.
What are the ratings and certificates for CMB-Groep - 1989?
CMB-Groep - 1989 is rated/received certificates of: Belgium:KT
Abbreviation of Commercial Banking?
CMB
What actors and actresses appeared in CMB-Groep - 1989?
The cast of CMB-Groep - 1989 includes: Mariette Van Arkkels as Dame in Parijs
What is the capital of skri lanka?
Colombo (CMB)
How many 20ft container is 84 cmb?
3
How many flight miles from LHR to CMB?
5,417 miles
Is the CAB a skill badge?
Yes, in the same sense that a CIB or CMB is.
What is the old ticker symbol for Chase Manhattan Corp?
The old symbol is "CMB"
What does cmb stand for?
Among other things, it means Cosmic Microwave Background.
Can a medic wear a cab and cmb together?
Yes. The CAB (along with the CIB and EIB) is a Category 1 badge, of which only one may be worn. The CMB is a Category 2 badge, and can be worn along with a Category 1 badge.
What artists album CMB containing the 90s hit All 4 Love?
color me badd
