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I0OJJ > ANTENN 02.07.10 18:33l 23 Lines 1003 Bytes #-5796 (0) @ WW
BID : 2160I0OJJ
Read: GUEST
Subj: Re: what happens to reflected energy ?
Path: DB0FHN<DB0MRW<DB0ERF<OK0NHD<SR1BSZ<ON4HU<IK2XDE<IR2UBX<IW2OHX<I4UKI<
I0OJJ
Sent: 100702/1452z @:I0OJJ.ILAZ.ITA.EU #:6272 $:2160i0ojj
On Jul 2, 3:21=A0am, "Szczepan Bialek" <sz.bia...@wp.pl> wrote:
> The word "laser" is probably common =A0name for the all atificical light
> sources.
No, it is not. From answers.com: "Definition: laser - Any of several
devices that emit highly amplified and coherent radiation of one or
more discrete frequencies."
>From Wikipedia: "Light Amplification by Stimulated Emission of
Radiation (LASER or laser) is a mechanism for emitting
electromagnetic radiation, typically light or visible light, via the
process of stimulated emission. The emitted laser light is (usually) a
spatially coherent, narrow low-divergence beam, that can be
manipulated with lenses. In laser technology, 'coherent light' denotes
a light source that produces (emits) light of in-step waves of
identical frequency, phase,[1] and polarization. The laser's beam of
coherent light differentiates it from light sources that emit
incoherent light beams, of random phase varying with time and
position."
--
73, Cecil, w5dxp.com
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