![]() Ī black hole behaves as though its horizon has a temperature and that temperature is inversely proportional to the hole’s mass T ≈ (6 × 10 −8) M. Once disturbed, their natural dynamics magnifies the disturbances. Unstable black holes are not self-correcting under perturbations. If something disturbs them from their equilibrium state, they naturally correct themselves and return to the one equilibrium. Stable systems are inherently self-corrections. The discussion is dealing in black holes with stable systems. The point at which there is gravitational singularity is where entropy ceases. The singular region can thus be thought of having infinite density. ![]() It can also be shown that the singular region contains all the mass of the black hole solution. In both cases, the singular region has zero volume. For a non-rotating black hole, this region takes the shape of a single point and for a rotating black hole, it is a smear that lies in the plane of rotation. Gravitational singularity is a region where space-time curvature becomes infinite. Moreover, quantum field theory in curved space time predicts that event horizons emit Hawking radiation with the same spectrum as a black body of a temperature inversely proportional to its mass.Īt the center of a black hole, as described by general relatively, there lies a gravitational singularity. In many ways, a black hole acts like an ideal black body, as it reflects no light. Although crossing the event horizon has enormous effect on the fate of the object crossing it, it appears to have no locally detectable features. The boundary at the region from which no escape is possible is called the event horizon. The theory of general relativity predicted that a sufficiently compact mass can deform space-time to form a black hole. At its center, there lies an infinitely small, infinitely dense singularity, a place where the normal laws of physics break down. Absolute zero exists in black holes.Ī black hole is a region of space in which the gravitational field is so powerful that nothing, including electromagnetic radiation such as visible light, can escape its pull―a kind of bottomless pit in space-time. As the temperature of the substance being cooled approaches the temperature of the cooling agent, the variable approaches infinity.Ībsolute zero and even sub-absolute zero gas occurs in our natural universe. The laws of thermodynamics dictate that absolute zero cannot be reached using any thermodynamic means. The corresponding Kelvin temperature scale sets its zero point at absolute zero by definition. The theoretical temperature is determined by extrapolating the ideal gas law by international agreement, absolute zero is taken as −273.15 on the Celsius scale (International system of units). Received 24 June 2016 accepted 13 July 2016 published 29 July 2016Ībsolute zero is the lower limit of the thermodynamic temperature scale, a state of which the enthalpy and entropy of cooled ideal gas reaches minimum value, taken as 0.
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