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Scientists show a new way to absorb electromagnetic radiation

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  Scientists show a new way to absorb electromagnetic radiation Sam Wormley <swormley1@gmail.com> - 2016-01-14 07:55 -0600
    Re: Scientists show a new way to absorb electromagnetic radiation jimp@specsol.spam.sux.com - 2016-01-14 17:59 +0000

#545322 — Scientists show a new way to absorb electromagnetic radiation

Scientists show a new way to absorb electromagnetic radiation
> http://phys.org/news/2016-01-scientists-absorb-electromagnetic.html


> A team of authors from MIPT, Kansas State University, and the U.S.
> Naval Research Laboratory have demonstrated that it is possible to
> fully absorb electromagnetic radiation using an anisotropic crystal.
> The observations are of fundamental importance for electrodynamics
> and will provide researchers with an entirely new method of absorbing
> the energy of electromagnetic waves. The paper has been published in
> Physical Review B.
>
> Effective absorption of the energy of electromagnetic radiation is
> the cornerstone of a wide range of practical applications.
> Electromagnetic energy harvesting in the visible spectrum is very
> important for photovoltaics – the conversion of solar energy into
> direct current electricity. Absorbing materials in the microwave
> range of frequencies have an application that is equally as important
> – they are able to reduce the radar visibility of an aircraft.
> Effective absorption of electromagnetic waves is also important for
> use in sensing, nanochemistry, and photodynamic therapy.
>
> A classic example of an electromagnetic absorber that is familiar to
> many people is ordinary black paint. It looks black because a
> significant amount of the light that falls on it is absorbed in the
> layer of paint and does not reach the observer. However, black paint
> is a relatively poor absorber – a certain amount of energy from the
> incident light (typically a few percent) is still reflected back into
> the surrounding space.
>

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#545388

Sam Wormley <swormley1@gmail.com> wrote:
> Scientists show a new way to absorb electromagnetic radiation
>> http://phys.org/news/2016-01-scientists-absorb-electromagnetic.html
> 
> 
>> A team of authors from MIPT, Kansas State University, and the U.S.
>> Naval Research Laboratory have demonstrated that it is possible to
>> fully absorb electromagnetic radiation using an anisotropic crystal.
>> The observations are of fundamental importance for electrodynamics
>> and will provide researchers with an entirely new method of absorbing
>> the energy of electromagnetic waves. The paper has been published in
>> Physical Review B.
>>
>> Effective absorption of the energy of electromagnetic radiation is
>> the cornerstone of a wide range of practical applications.
>> Electromagnetic energy harvesting in the visible spectrum is very
>> important for photovoltaics ? the conversion of solar energy into
>> direct current electricity. Absorbing materials in the microwave
>> range of frequencies have an application that is equally as important
>> ? they are able to reduce the radar visibility of an aircraft.
>> Effective absorption of electromagnetic waves is also important for
>> use in sensing, nanochemistry, and photodynamic therapy.
>>
>> A classic example of an electromagnetic absorber that is familiar to
>> many people is ordinary black paint. It looks black because a
>> significant amount of the light that falls on it is absorbed in the
>> layer of paint and does not reach the observer. However, black paint
>> is a relatively poor absorber ? a certain amount of energy from the
>> incident light (typically a few percent) is still reflected back into
>> the surrounding space.

During it's lifetime an oyster changes its sex from male to female and
back several times.
 

-- 
Jim Pennino

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