> Sam Wormley wrote:
>>> M.Parker wrote:
>>>> For the last few days, I'm confusing a lot about Light.
>>> See:formatting link
>>formatting link
>>
>> In this sub-column,
>> what makes Einstein to conclude that Light comes as discrete particles=
=2E
>n
>> For those who can't open the web-page here is the extracted portion
>>
>> [Emphasis as in the original]
>> ______
>>
>> In 1905, Albert Einstein provided an explanation of the photoelectric
>> effect, a hitherto troubling experiment that the wave theory of light
>> seemed incapable of explaining. He did so by postulating the existence=
>> of photons, quanta of light energy with particulate qualities.
>>
>> In the photoelectric effect, it was observed that shining a light on
>> certain metals would lead to an electric current in a circuit.
>> Presumably, the light was knocking electrons out of the metal, causing=
>> current to flow. However, it was also observed that while a dim blue
>> light was enough to cause a current, even the strongest, brightest red=
>> light caused no current at all. According to wave theory, the strength=
>> or amplitude of a light wave was in proportion to its brightness: a
>> bright light should have been easily strong enough to create a large
>> current. Yet, oddly, this was not so.
>>
>> Einstein explained this conundrum by postulating that the electrons ca=
> receive energy from electromagnetic field only in discrete portions
>> (quanta that were called photons): an amount of energy E that was
>> related to the frequency, f of the light by
>>
>> E =3D h f,
>>
>> where h is Planck's constant (6.626 =D7 10-34 J seconds). Only photons=
of
> a high-enough frequency, (above a certain threshold value) could knock=d
>> an electron free. For example, photons of blue light had sufficient
>> energy to free an electron from the metal, but photons of red light di=
> not. More intense light above the threshold frequency could release mo=
re
> electrons, but no amount of light below the threshold frequency could
>> release an electron.
>>
>> Einstein was awarded the Nobel Prize in Physics in 1921 for his theory=
>> of the photoelectric effect.
>=20
> Which wave is the photon in? Electric or Magnetic wave?
> And how does it move from one to the other?
>=20
> Mitch Raemsch
If it(photon) is in the both waves.., what's the problem to you?
Again the question will be the same,=20 what makes Richard Feynman to say this line..,
"Light is a new kind of object,unlike anything we have ever seen before"
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__Cell biology is the only science in which multiplication means the same=20 thing as division.