Sentences with phrase «physics of absorption»

I had thought that you were serious in wanting to understand the physics, and that you would take the time to look at things like the physics of absorption and scattering of light in dispersive media.

The physics of absorption and re-emission of infra - red radiation by CO2 is equally well - known.

There's more than just the physics of absorption / emission.

Not exact matches

More to explore Light Absorption, Reflection and Transmission, from the Physics classroom Refraction of Light, from Science Learning Hub Now You See It... Testing Out Light Refraction, from Scientific American Science Activity for All Ages!

«For low - density materials like plastics, polymers, foams and other encapsulants, this phase signal can be a thousand times bigger than the absorption signal (of conventional X-ray),» said principal investigator Amber Dagel, who studies physics - based microsystems.

Fabian Schlaepfer and his colleagues in the group of Ursula Keller in the Department of Physics have now studied these processes for the first time at the attosecond timescale, combining transient absorption spectroscopy with state - of - the - art first - principles calculations.

Best known as the creator of «Blacker - Than - Black,» a color that employs nanoparticles in the near - total absorption of visible light, Frederik De Wilde is an artist - scientist pursuing what he calls, «the post sublime,» a microscopic apex he finds between chemistry, physics, and artistry.

The reason for scientific concern over global warming rests on basic physics — infrared absorption — and robust measurements of atmospheric gas concentrations.

We will confine the discussion to changes within the CO2 absorption wavelengths, because regardless of how much or how little OLR is emanating within these wavelengths, if the principles of radiative physics are violated there, the argument fails.

Based on harmonics physics and math (something down a musician's alley I suspect; — RRB --RRB- the center frequency of CO2 absorption is 15um and equates to 1.325x10e - 20 joules / photon.

I do not advise throwing out radiation physics, N - S equations, absorption / emission curves and any of the physics already involved.

Specifically, I use a formula based on physics of energy absorption, using snow cover, and June ice extent / area numbers.

John Carter August 8, 2014 at 12:58 am chooses to state his position on the greenhouse effect in the following 134 word sentence: «But given the [1] basics of the greenhouse effect, the fact that with just a very small percentage of greenhouse gas molecules in the air this effect keeps the earth about 55 - 60 degrees warmer than it would otherwise be, and the fact that through easily recognizable if [2] inadvertent growing patterns we have at this point probably at least [3] doubled the total collective amount in heat absorption and re-radiation capacity of long lived atmospheric greenhouse gases (nearly doubling total that of the [4] leading one, carbon dioxide, in the modern era), to [5] levels not collectively seen on earth in several million years — levels that well predated the present ice age and extensive earth surface ice conditions — it goes [6] against basic physics and basic geologic science to not be «predisposed» to the idea that this would ultimately impact climate.»

This site — more than any other has taught me what I can trust — the physics (although absorption gets far to much attention relate to emission and convection)-- and what I can't trust (interpretation of output from models) and some paleoclimatology,

http://physics.aps.org/articles/v6/22 Richard J. Saykally, Department of Chemistry, University of California, Berkeley, CA 94720, USA Published February 25, 2013 Physics 6, 22 (2013) DOI: 10.1103 / Physics.6.22 Water dimers have been detected in room - temperature water vapor, a key step toward understanding their effect on solar absorption and chemistry in the atmosphere.

The physics of CO2 - mediated IR absorption require that some of this be CO2 - derived, and no other factor suffices to provide more than a partial further addition.

A theory which has certain meteorological principles behind it such as the Classius - Clayperon water vapor relation and certain basic physics principles behind it such as the strong absorption band of CO2 in the IR.

That was sort of what I was alluding to with Neal, but didn't have the physics knowledge to backup: if the GHGs aren't the only players in the absorption and emission game then the IR opacity model may have a few leaks?

Because AGWSF fisics is fake there is no internal coherence in it, for example: if «all electromagnetic energy is the same and all creates heat when absorbed» then AGWSF fisics doesn't have any answer to the real world physics understanding of how visible light is reflected / scattered in the atmosphere which is by real technical absorption of visible light by the electrons of the molecules of nitrogen and oxygen, hence our blue sky.

Instead atmospheric physics uses the fundamental equations (the radiative transfer equations) which determine absorption and emission of radiation by water vapor, CO2, methane, and other trace gases.

Also, how can you believe that somehow Venus's 8.2 °C / km lapse with 65W / m2 warming somehow is operating on the same core physics principle of earth's 6.5 °C / m2 lapse with energy absorption near the base of 240 - 960W / m2.

Tim, good I didn't bite, as the Karlen paper doesn't adress the physics of CO2 absorption at all, it deal completely with temperature trends.

The IR radiation that is subsequently emitted interacts with carbon dioxide in the atmosphere — a basic reality of experimental physics that is most certainly seen in absorption spectra.

Agnostic — Yes, the Physics Today article is very informative and should provide you with an accurate perspective of the role of greenhouse gas IR absorption in mediating surface and atmospheric warming.

ANSWER: by «saturation» is usually meant a complete absorption of the radiation of the surface by the carbon dioxide and water vapor of the air: according to Dufresne and Treiner it is saturated and according to Pierrehumbert (Physics Today 2011) it is not; for me 0.8 (W / m ²) / 400 = 0.2 % for a doubling of the CO2 content is» nearly saturated»; 0.8 W / m ² is the additional absorption for 2xCO2 (e.g. per Hansen 1981)

«The fictitious «trapped heat» property, which they aggressively promote with a dishonest «greenhouse gas» metaphor, is based on their misrepresentation of natural absorption and emission energy transfer processes and disregard of two fundamental laws of physics.

Dad (PW), being interested in physics first last and always (sometimes annoyingly so), asked me if there were readily available pictures of IR absorption, and of course once I reflected a moment, found Wikipedia featured it front and center under greenhouse gases.

I'll leave you with a demonstration of the thermal absorption properties of CO2 that makes the case for 2 being a strong IR absorber (and thus a greenhouse gas) stronger than all the physics I did this past week.

The physics that must be included to investigate the moist greenhouse is principally: (i) accurate radiation incorporating the spectral variation of gaseous absorption in both the solar radiation and thermal emission spectral regions, (ii) atmospheric dynamics and convection with no specifications favouring artificial atmospheric boundaries, such as between a troposphere and stratosphere, (iii) realistic water vapour physics, including its effect on atmospheric mass and surface pressure, and (iv) cloud properties that respond realistically to climate change.

This means, that the stochastic atmospheric environment (unlike GCMs) does not take the Beer - Lambert law at its face value, and there are higher order principles of physics that governs the atmospheric absorption.

* The actual physics of CO2 and other greenhouse absorption at upper stratospheric level is more complex than typically explained in elementary textbooks.