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What else can I help you with?
Who are the contributors of quantum theory?
many contributors right from Planck to Einstein, Bohr,etc. a proper answer has not been given yet by anyone.
Is there any evidence against the theory of quantum cosmology?
Quantum cosmology is a field attempting to study the effect of quantum mechanics on the formation of the universe, especially just after the Big Bang. Despite many attempts, such as the Wheeler-deWitt equation this area of interest has yet to be fruitful. Quantum cosmology is a branch of quantum gravity.
What has the author Mark P Silverman written?
Mark P. Silverman has written: 'More Than One Mystery' -- subject(s): Quantum theory 'And yet it moves' -- subject(s): Quantum theory, Physics 'Probing the atom' -- subject(s): Atomic structure
If new evidence was found in the theory of relativity can it be updated?
Of course. As it is we already know both relativity and quantum theory must be updated to make them unify, we just don't know how yet.
Gravitational radiation is composed of streams of photons or elemtary particles of electromagnetic waves?
No. Gravitation is not electromagnetic radiation, and no quantum (elementary particle) of gravitation has been found yet. If the speed of propagation of gravitation is not infinite, that hasn't yet been measured either.
What will be the theory after the quantum theory of light?
There is unlikely to be a successor to a quantum theory of light, by the definition that the quantum theory of light is that "Light is made up of discernible particles", has very strong evidence to support it, and no alternative explanation has yet been found to explain such effects as the photoelectric effect.If you mean quantum electrodynamics, the section of the standard model of particle physics that explains light, electricity and magnetism, and therefore the standard model of particle interaction, then the only answer is that absolutely nobody knows. In fact, finding a successor to the standard model, which despite being one of the best theories ever developed is full of more holes than the titanic if taken as a theory of everything, is one of the biggest deals in all of science.One possible successor to the theory of quantum electrodynamics is the section of superstring theory that explains electromagnetism, but there are many who don't think string theory will be the answer to physics' problems, and certainly string theorists have yet to find any strong evidence supporting their theories.
What does the quantum field theory study?
There are two answers here really. I'll begin by describing why it's different from Quantum Mechanics. Quantum Mechanics studies non-relativistic particles (or waves), that is particles where effects from Einstein's relativity are unnoticeable because the particle is travelling at a speed much slower than the speed of light. Additionally people study N-body problems, which means to say that we think of a system with precisely N particles. Quantum Field Theory on the other hand is a generalisation that attempts to study particles where relativistic effects can be noticeable. This has several additional problems, one of which is that it predicts that particles can be created or destroyed which means we're no longer in an N-body system. Quantum Field Theory was invented in order to deal with these problems and as such it generalises Quantum Mechanics. There are several additional complexities that Quantum Field Theory has a result of this, in particular there has always been problems that infinities show up in calculations that have caused various difficulties, though these have been solved by techniques in Physics known as renormalisation. To date Quantum Field Theory is the best theory of Physics that is experimentally verified. String Theory offers a possible improvement but it has yet (at least to my knowledge) to any experimental justification. Quantum Field Theory fully explains (nearly) everything we currently know about particle physics, including quantum effects in electromagnetism, nuclear physics and condensed matter physics. The outstanding problem in this field is to try and incorporate Einstein's theory of gravity. This is considered by many as one of the big outstanding problems in Physics today.
What is Quantum Gravity?
In a word. No. Grand unification is also commonly called the Theory of everything. Which in a sense, there would exist an equation of a set of equations that every other physics equation can be derived from. A quantum theory of gravity would only help to better blend quantum mechanics and classical mechanics, not necessarily leading to a theory of everything, though it would be another step toward it.
How valid is Einstein laws?
Einstein's laws, particularly his theory of relativity, have been extensively tested and confirmed through numerous experiments and observations. They are considered highly valid and form the basis of modern physics. However, they may break down in extreme conditions such as near singularities or at the quantum level, where the theory of general relativity and quantum mechanics are not yet fully reconciled.
What is gravity - not its characteristics?
We are not sure yet. According to Einstein's highly successful theory of general relativity gravity is the result of spacetime being warped by the presence of matter and energy. Particles then follow these curves giving rise to the phenomenon of gravity. In quantum field theory gravity is instead described as being transmitted by a spin-2 particle called the graviton. This approach has several problems however, which is the main reason why we are not sure yet. But because all the other fundamental forces are described very well by quantum field theory most physicists think that in the future it will be possible to describe gravity in this way. To be a bit more technical gravity arises in any quantum field theory where you require that the laws of physics are the same for any observer. This is commonly referred to as general covariance or (local) Lorentz invariance.
What is true relativity or quantum mechanics?
Einstein's work on the Photoelectric effect, which won him the Nobel prize in 1921 was a bulwark of Quantum Mechanics. Einstein went off in another direction because of his inate suspicion that Quantum Mechanics has severe internal difficulties. Quantum Mechanics and Relativity have not yet been reconciled--but they are moving together slowly. Quantum Gravity seems to be key to the issue and may be resolved by String Theory.
What do gravitational waves do?
They maintain gravity as light waves maintain light. They travel at the same speed (300,000,000 meters per second) as light. The difference is that the quantum of gravity, called the graviton, while it exists in theory, has never yet been detected.
