what is zero point energy?
116428
The lowest possible energy in a quantum mechanical system is called the zero point energy. \n\nThe difference between classical and quantum mechanical system can be seen very easily from zero point energy stand point.\n\nFor a classical system, the minimum energy for a system may be zero if the velocity of the particles contained in the system is zero.\n\nBut for a quantum mechanical system, the minimum energy of the particles can not be zero. Because, from uncertainty principle, if the velocity (hence Momentun)is measured with certainty to be exactly zero, the uncertainty of the position must be infinite. Which means the particle is not confined within the system anymore.
733773
Zero.  If the velocity is constant, acceleration is 0.
637738
You must be after the points because it is so easy to Google this, or visit Wikipedia.\n\nBasically, the n-th ionization energy is the energy required to remove the n-th electron (starting from the outside working in) to a distance of infinity from the nucleus after the previous n-1 electron have been removed.  For example, using sodium Na, it has 1 electron in the outer ring, or valence electron.  The first energy will be needed to bump that guy to infinity.  The next electron will take more energy because it is close to the nucleus.\n\nHope it helps.
1128696
Hey.....its easy........you can take a volume of space, remove everything possible out of it, and then freeze it to degrees approaching absolute zero so that most of the background radiation gets zapped too and still there is something in that space. Energy and particle creation can still exist in such a realm. \n\nWhat is it? It is the basic ingredient of the Hyperspace that contain our physical Universe and many other parallel and non-parallel universes. \n\nThe ZPE modules that recycle in the form of life in the physical universe and other universes in the Hyperspace to gain next levels of energy elevation actually are part of an integrated consciousness – the essential part of the type IV civilization. \n\nThese ZPEMs actually provide the necessary suction force to control, manipulate and maintain the Physical and other parallel universes. Thus the mechanisms by which the Hyperspace as well as the countless individual Universes is maintained are really composed of a complex structure of the ZPEMs. \n\nThese ZPEMs are the life forms all over the Hyperspace, individual universes and even in the chilled or flat universe that forms the foundation of everything. \n\nIf you try to visualize the intensity of the ZPE – Zero Point Energy, consider the following : \n\nRadio waves, light, X-rays, and gamma rays are all forms of electromagnetic radiation. Classically, electromagnetic radiation can be pictured as waves flowing through space at the speed of light. The waves are not waves of anything substantive, but are in fact ripples in a state of a field. These waves do carry energy, and each wave has a specific direction, frequency and polarization state. This is called a "propagating mode of the electromagnetic field." \n\nEach mode or module is a tiny amount of energy, but the number of modes is enormous, and indeed increases as the square of the frequency. The product of the tiny energy per mode times the huge spatial density of modes yields a very high theoretical energy density per cubic centimeter. The zero-point energy density would be at least 110 orders of magnitude greater than the radiant energy at the center of the Sun. \n\nThe really provides an idea of the level of energy we are talking about! The ZPEs collectively control the gravity and electromagnetic force fields in the 3-D Physical Universe. Similarly they also control the spatial structures of other Universes.\n      Hope i helped i some way.....cya.!!
261631
Zero gravity is a non-existent force. It can only be reached when you have completley left a astral bodies(i.e. the earth or another planet). It is actually not zero gravity it is more as the there for lack of gravity.
58945
The most precise definition of temperature is the partial derivative T = (dq/ds) where q is heat flow and s is entropy.  \n\nAbsolute zero is when a material has no change in entropy when heat is added, and the third law of thermodynamics says that it is impossible to reach this state, although you can come arbitrarily close. \n\nAbsolute zero has nothing to do with electron orbits, nor does temperature have anything to do with electron orbits. The velocity associated with electrons in stationary states comes primarily from their wave nature, not temperature.\n\nAbsolute zero is NOT the lowest temperature possible. Negative absolute temperatures are possible and systems with negative absolute temperatures have been created.  This is because physicists define temperature with the equation I stated already, not based on kinetic energy, random motion or anything else chemists (some of whom should know better) will tell you.
153279
Zero (0) is a paradoxical number that has high philosophical and scientific importance. Context of zero in absolute & applied Mathematics is different. In applied mathematics we use it according to our convenience, for example 0 degree celsius, 0!(factorial), initial Velocity, initial position etc. And in Absolute Mathematics we think of it transcendently. Absolute zero is beyond our experience.Therefore we are using and thinking of zero in diffrent context. \nIn the fraction a/o, at present the numerator `a' is considered as something that is considerable. And the denominator `0' is not used in the absolute sense insted it  is taken in the concept of `infinitesimally small'.That is the symbol `0' here stands for `infinatesimally small'.For instance a `point' is considered as magnitude and dimensionless which is relatively true and wrong in the absolute sense.\nContext a/0=a is also correct iff same meanig is strected all through. ie. a/0 implies `a' is `undivided'.Then a*0 means a is not at all multiplied, hence a*0=a only in the absolute sense. Here `a' which is the quotient and  the product is same to both expressions implies that `a' is individual and Independent.This concept is non-pragmatic hence not in use.\nMathematically,a=(1+1+1...`a' times).\nGeneraly, if a/m =n, a=m*n = (m+m+m+...`n' times) \nAnd, if m is infinatesimally small,a=(m+m+m+... infinite  times).At present the parodoxical symbol `0' is used to denote the axiom `infintesimaly small'.consequently. it is written as a/0= `Infinity'\nNote that divisibility exists iff something exists in the denominator.And in the same way multiplicability exits iff something exits as multiplier.
392340
There is no such thing as empty space.  The Heisenberg Uncertainty Principal says that the uncertainty in energy multiplied by the uncertainty in time must be greater than or equal to a certain constant value (1/2 h-).  What does this mean?  One thing it means is that the uncertainty in energy cannot be zero, because zero times the uncertainty in time equals zero, which is not greater than 1/2 h-.  If space were empty, then the energy of space would be 0.  Not just 0, but 0.0000000000000000000000000...  Zero is an exact number with no uncertainty, however we can't have an exact value for energy (not even 0).  So, the energy of "empty" space actually fluctuates around around zero but is never exactly zero.  The net result is a thing known as Quantum Foam: tiny particles being created and destroyed over miniscule increments of time at the smallest possible scale.  Google "Quantum Foam" for more information.
545787
E = mC^2. Therefore, Energy
506358
an energy oscillation
432865
The answer goes back to what temperature measures.  Heat is actually the motion (really kinetic energy) of atoms (since we're talking about an element).  Lower heat (and lower temperature) mean less motion.\n\n-273 C (or 0 degrees Kelvin) is known as "absolute zero".  It is the temperature at which that heat motion stops and kinetic energy goes to zero.  Since an atom cannot have negative motion or negative mass, its kinetic also cannot be zero and therefor its temperature cannot be less than absolute zero.
95725
Zero of zero is undefined because of the definition of division and some basic field axioms.  It's not zero and it's not infinity, it's UNDEFINED.  I can prove it.\n\nThe multiplicative inverse of n is defined as the number 1/n such that n*(1/n)=1.  It's a property of zero that anything times zero is zero.  Therefore for any 1/n, 0*(1/n)=0, and since zero cannot equal one, zero has no multiplicative inverse.\n\nDivision by n is defined as multiplication by the multiplicative inverse of n.  Since zero has no multiplicative inverse, you cannot divide by zero.\n\nAll you people who said that anything divide by zero is infinity are just flat out wrong.  If n is not equal to zero, the limit as x approaches zero for the positive side of n/x is infinity, but that does not mean that n/0 is infinity.  Also, note that if you come at it from the negative side the limit is negative infinity.  n/0 is undefined because zero has no mutiplicative inverse so the expression 1/0 is mathematically meaningless  Also, the limit of 0/x as x approaches zero would be zero, not infinity.\n\nWhoever it was who did the calculator thing, calculators are a far cry from a mathemtical proof.   There are plenty of arithmetic problems that make perfect sense but can't be done on a calculator.  In fact, there are infinetly many of them.  And there are some properties of multiplication and addition that can be proven mathematically but are not true on a calculator.  But you and the first poster get major props for being the only people to answer this question and demonstrate anything resembing an basic understand of elementary arithmetic.\n\n______\nH2++ cannot exist because it would have to have a covalent bond but would have no electrons.  Two hydrogen nuclei can't form a diatomic molecule.  O-- is not going to exist in water because the hyrogen atom would have to dissociate from the water molecule one at a time, and OH- is more stable than O-- and H+.  It could in theory exist as 2H+ and O--, but OH- is a much happier molecule than O--.\n\nNothing can go faster than the speed of light because as an object approaches the speed of light it's mass becomes infinite, and so the force required to cause it to accelerator more becomes infinite.  You can't apply infinite force to something.  Normally I'd do out the math to show that, but it's 3:30 in the morning so I doubt I can make it coherent.\n\nTensor calculus is too complicated to explain at 3:30 in the morning.  You can read about it here: http://en.wikipedia.org/wiki/Tensor_calculus
638493
Zero Kelvin (aka Absolute Zero) is a theoretical temperature which has been approached VERY closely in laboratory conditions, but should not actually be literally possible to achieve.  By definition ANY temperature, including something like 0.0001 Kelvin is technically infinitely more than true absolute zero.\n\nAbsolute zero is a limit, not an achievable value.
484173
Smaller than a refrigerator. It would be a single point. The event horizon surrounding it would be another matter.
67988
The first answer is correct.  Energy.  Energy is defined as force applied through a distance.  This specific type of energy is known as kinetic energy (energy of motion).  Energy is measured in joules, or J.  E = F x D, so if you applied 50 Newtons and the object moved 1 metre, you would have expended 50 joules.
278842
Disregard butchtroll, he doesn't know anything and is obviously just guessing.\n\nA absolute zero, although practically impossible to reach, it is theoretically very easy to calculate. Just assume that all particles have a velocity of zero, and calculate the lowest potential structure according to the lennard-jones potential and possible electro-static potential. The result concludes a structure quite similar to crystals at living-room temperature.\n\nButch - practically as in cannot be obtained through anything but theoretical experiments. Although, temperatures can actually be achieved that is sufficiently low to allow, in some degree, to regard matter as having a temperature of absolute zero. Theoretically, if such matter should exist, it would affect the universe in any significant way. That the universe cease to exist if absolute zero was reached, would be a prerequisite, not a result. You can do that math yourself and see if it is possible - or borrow the particle similator program I've written.\n\nmore: I find it funny that you preach about humility, after calling me an idiot. Especially after mixing different types of energy together and calling the lot for temperature. Sure, if an atom contain absolutely no energy, it would collapse into a black hole. But temperature is NOT a measure of total energy.\n\nyet more: Still you call me an idiot, and still you attempt to call humiliary high ground. I'm not saying I know everything myself - but wheter temperature is all energy, or just momentum of "particles", is pretty far from'everything'. As a student in nanotechnology, I can honestly say that, you sir, are blinded by your own feeble knowledge of physics. Temperature of matter is usually described as the summation of vibrational, momentum, rotational energy and phonons. NOT electronic excitation or any kind of potential energy.\n\nYour question was inane, and I *did* answer it. Nothing would happen with the universe if a cloud of hydrogen would suddenly come into existence with a temperature of zero kelvin. If you don't understand what I'm writing, just say so, instead of stating that I didn't answer your question.\n\nWhat do you attempt to prove with your citation? You seem lost, sir?\n\nWhat do you need a value of? What the temperature of the solid hydrogen would be after 1 second? Sorry, but I don't care enough to calculate how much a certain amount of hydrogen crystal would increase in temperature from background radiation.
849157
Zero As the north pole . IT is only a point. Do youwant instead superficy of Antarctica?\n\nif you see my link 14.2 millions km^2