La théorie des coefficients d'Einstein se limite au cas où les deux états sont des états liés dans lesquels les électrons restent liés aux atomes, de sorte que la transition est parfois appelée transition \"liée-liée\", par oppositi… Either way, 100,000 micron radiation can’t melt an ice cube from Planck absorption any more than 15 micron radiation unless it’s from some kind of laser not Nature. Ice is weakly birefringent, or doubly refracting, which means that light is transmitted at different speeds in different crystallographic… | #. Assuming both objects were suspended in a vacuum then both objects would radiate energy in the form of infrared radiation (IR) Both objects would absorb the IR emitted by the other. | #. No matter where it ends up, it can’t heat anything. Bluster does not wash. April 5, 2020 at 10:59 pm Geran, just look what it says here…. If neighbouring conduct heat away they themselves must be heated in turn. To obtain the absorption and reflection coefficients, the measured values of emitted radiation that are considered constants, were averaged and after that the solar irradiance emitted is quantified, which was obtained using the SPCTRAL2 model, that model was obtained from . Detune the laser to reduce intensity somewhat to get a modest warming. Tables and graphs of the photon mass attenuation coefficient μ/ρ and the mass energy-absorption coefficient μ en /ρ are presented for all of the elements Z = 1 to 92, and for 48 compounds and mixtures of radiological interest. You could, however, shine it on a blackened thermometer bulb but do stand back. | #. | #. A CO2 laser aimed at water will penetrate only 20 microns, but since it’s collimated or focused and at high power it can raise the temperature of individual atoms via energy transfer before they can shed the heat and thus vaporize water or tissue, making it good for removing warts, but not for making coffee because of the great power waste. According to the Stefan Boltzmann law the energy loss to its environment slows as the temps reach equilibrium. This means that emitted infrared radiation that falls within the absorption region of the line j = 40 is saturated over a distance that is about 6 times the absorption length for j = 16 i.e. The analysis is performed assuming 400 ppm CO2 in the atmosphere for which we found saturation of absorption. Cette description est couramment utilisée en physique des lasers. The Earth is warmed by the Sun’s radiation and cools by radiation into the near-vacuum of space. At atmospheric temperatures a few low-lying vibrational bands of CO2 are relevant. This is the corner stone of ghe. Could you please forward the reference for this remarkable discovery. For the umpteenth time, the killer observation is that 15 micron radiation from atmospheric CO2 is at a Planck radiation temperature of -80C, which can’t melt an ice cube, much less cause global warming. The surface is constantly emitting 15 micron wavelength radiation caused by solar radiation, and that swamps out anything from atmospheric CO2, so it will just cycle the additional 15 micron wavelength energy through the pump and stay at the same temperature. All of the atmosphere, including the CO2 thereof, slows the cooling of the surface. Actually, they want you to believe way way more, particularly that CO2 reemits it and the Earth’s surface absorbs it, raising its temperature on a global basis that requires them to take over the world to stop it. However, the illustration using such a beast was show that IR wavelengths of any order can have a distinct heating effect be it 10um or perhaps 15um if you wish to consider normal gaseous CO2 emissions and can indeed, if sufficiently intense, raise temperatures. A laser gets its power because of harmonics where there is no interference between the light waves and there power/amplitude combine, which doesn’t happen in natural light. Too bad, atmospheric CO2’s Planck radiation isn’t collimated and is all at 15 microns, and any that strikes Earth’s surface will bounce off or be absorbed by the surface molecules, which will always be held to the same temperature as the surroundings by conduction from the surrounding molecules, making global warming impossible. The fraction of the molecules for j = 16 is as indicated 0.078. Geran: The GHE violates the 2nd law of thermodynamics because the CO2 in the atmosphere have more energy than the molecules on the surface of the Earth. The absorbing and emitting parts of the radiative transfer equation (RTE), this equation in the separate Theory Guide, is a function of the absorption coefficient.