User talk:71.135.34.186

This paragraph: "In a practical situation and room-temperature setting, humans lose considerable energy due to thermal radiation in infra-red in addition to that lost by conduction to air (aided by concurrent convection, or other air movement like drafts). The heat energy lost is partially regained by absorbing heat radiation from walls or other surroundings. (Heat gained by conduction would occur for air temperature higher than body temperature.) Otherwise, body temperature is maintained from generated heat through internal metabolism. Human skin has an emissivity of very close to 1.0.[15] Using the formulas below shows a human, having roughly 2 square meter in surface area, and a temperature of about 307 K, continuously radiates approximately 1000 watts. If people are indoors, surrounded by surfaces at 296 K, they receive back about 900 watts from the wall, ceiling, and other surroundings, so the net loss is only about 100 watts. These heat transfer estimates are highly dependent on extrinsic variables, such as wearing clothes, i.e. decreasing total thermal circuit conductivity, therefore reducing total output heat flux. Only truly gray systems (relative equivalent emissivity/absorptivity and no directional transmissivity dependence in all control volume bodies considered) can achieve reasonable steady-state heat flux estimates through the Stefan-Boltzmann law. Encountering this "ideally calculable" situation is almost impossible (although common engineering procedures surrender the dependency of these unknown variables and "assume" this to be the case). Optimistically, these "gray" approximations will get close to real solutions, as most divergence from Stefan-Boltzmann solutions is very small (especially in most STP lab controlled environments)."

...is wrong. It violates 2LoT. I suggest whomever wrote it study up on quantum electrodynamics and field radiation pressure, which is what regulates emission and absorption processes.

A photon gas is a gas-like collection of photons, which has many of the same properties of a conventional gas like hydrogen or neon – including pressure, temperature, and entropy. This pressure is the field radiation pressure between two objects, as calculated via the Stefan-Boltzmann law.

At thermodynamic equilibrium, the field radiation pressure between two objects is such that neither object can emit into the field radiation pressure, nor will they absorb radiation from the other object (the Helmholtz Free Energy is zero) nor from the field, thus the photons already in the field represent a standing wave.

At thermodynamic imbalance such that Object A is higher temperature than Object B, and higher temperature than ambient, the atoms or molecules comprising Object A may emit into the field radiation pressure. If the field radiation pressure is higher than the energy density of the atoms or molecules comprising Object B, they may be absorbed, contingent upon whether they carry sufficient energy to do work upon the vibrational mode, rotational mode or electronic mode quantum states of the atoms or molecules comprising Object B, or are resonant with an inter-molecular transitory vibration (blackbody absorption).

If the energy density of either object is higher than the field energy density, there will be very few photons of sufficient energy which can do work upon the atoms or molecules comprising the object, and thus those lower-energy photons will be reflected (reference: reflection from a step-potential), in accord with the Heaviside step function.

The paragraph referenced above is misleading people into believing that 2LoT is continually violated... I've been in a months-long 'discussion' with one such person, who will not reconsider his stance because "Wikipedia says it, so it must be true"... to the point that he's calling physicists "incompetent" (his word) for properly describing the emission and absorption process in accord with quantum electrodynamics.

Please do remove the paragraph referenced above and input accurate information... Wikipedia's role as a reference is damaged by such misleading information.