Light 'wave' physics



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Topic: Religions > Atheism
User: "Ghent"
Date: 04 Feb 2007 05:24:57 PM
Object: Light 'wave' physics
OK, first of all the following is NOT the view of an expert and
purely the fruit of reflection (no pun intended, you will see why)
Back in high school, my optical physics teacher explained that light
is considered to be a wave (two sine waves perpendicular to each
other) or in other circumstances particles.
Now my first question is this: when we refer to light as a 'wave' is
it the same sense as we refer to electricity as a wave (in other words
energy rising and falling over a period of time)?
Because if this is the case, then the mental image they teach in
school is completely wrong since most of us see it as an ocean wave
(like a sine graph) when really it is more like a light being dimmed
off and on (obviously, if my idea is correct there is no way we can
represent light like anything else because it is a class of it's own)
Basically, the sine graphs they show us throws us off because we tend
to take that literally (like most students in my electricity class
still think that electricity travels like the wave of an ocean :P )
.

User: "Old Man"

Title: Re: Light 'wave' physics 04 Feb 2007 08:26:06 PM
"Ghent" <jabriol@hotmail.com> wrote in message
news:1170631497.682738.207410@v33g2000cwv.googlegroups.com...


OK, first of all the following is NOT the view of an expert and
purely the fruit of reflection (no pun intended, you will see why)

Back in high school, my optical physics teacher explained that light
is considered to be a wave (two sine waves perpendicular to each
other) or in other circumstances particles.

Now my first question is this: when we refer to light as a 'wave' is
it the same sense as we refer to electricity as a wave (in other words
energy rising and falling over a period of time)?

In optics, light is accurately represented by a traveling
electromagnetic wave . "Electricity" isn't necessarily
a "wave".

Because if this is the case, then the mental image they teach in
school is completely wrong since most of us see it as an ocean
wave (like a sine graph)

For dummies, ocean wave aren't a bad analog. However,
the propagation of EM waves requires neither a medium nor
a boundry. In that respect, the ocean wave analogy is fertile
ground for crackpots (like Ghen ?).

when really it is more like a light being dimmed
off and on (obviously, if my idea is correct there is no way we can
represent light like anything else because it is a class of it's own)
Basically, the sine graphs they show us throws us off because we tend
to take that literally (like most students in my electricity class
still think that electricity travels like the wave of an ocean :P )

Nonsense. Ghen displays delusions of competence.
[Old Man]
.
User: "Chris Johnson"

Title: Re: Light 'wave' physics 04 Feb 2007 11:24:02 PM
On Feb 4, 8:26 pm, "Old Man" <nom...@nomail.net> wrote:

"Ghent" <jabr...@hotmail.com> wrote in message

news:1170631497.682738.207410@v33g2000cwv.googlegroups.com...

OK, first of all the following is NOT the view of an expert and
purely the fruit of reflection (no pun intended, you will see why)


Back in high school, my optical physics teacher explained that light
is considered to be a wave (two sine waves perpendicular to each
other) or in other circumstances particles.


Now my first question is this: when we refer to light as a 'wave' is
it the same sense as we refer to electricity as a wave (in other words
energy rising and falling over a period of time)?


In optics, light is accurately represented by a traveling
electromagnetic wave . "Electricity" isn't necessarily
a "wave".

Because if this is the case, then the mental image they teach in
school is completely wrong since most of us see it as an ocean
wave (like a sine graph)


For dummies, ocean wave aren't a bad analog. However,
the propagation of EM waves requires neither a medium nor
a boundry. In that respect, the ocean wave analogy is fertile
ground for crackpots (like Ghen ?).

when really it is more like a light being dimmed
off and on (obviously, if my idea is correct there is no way we can
represent light like anything else because it is a class of it's own)
Basically, the sine graphs they show us throws us off because we tend
to take that literally (like most students in my electricity class
still think that electricity travels like the wave of an ocean :P )


Nonsense. Ghen displays delusions of competence.

Please remove rec.ponds if you respond to Jabriol.
.


User: "Androcles"

Title: Re: Light 'wave' physics 06 Feb 2007 12:35:29 PM
"Ghent" <jabriol@hotmail.com> wrote in message =
news:1170631497.682738.207410@v33g2000cwv.googlegroups.com...

=20
=20
OK, first of all the following is NOT the view of an expert and
purely the fruit of reflection (no pun intended, you will see why)
=20
Back in high school, my optical physics teacher explained that light
is considered to be a wave (two sine waves perpendicular to each
other) or in other circumstances particles.
=20
Now my first question is this: when we refer to light as a 'wave' is
it the same sense as we refer to electricity as a wave (in other words
energy rising and falling over a period of time)?

OUCH!
Energy is a conserved quantity. That means it *cannot* rise and
fall over time. What it can do is change its form from potential
to kinetic and back again periodically.
http://www.kettering.edu/~drussell/Demos/SHO/damp.html
The stretched spring has the energy that is given up to the motion
of the mass when the spring is relaxed.
In the case of em radiation (light) energy can alternate between being=20
electrical energy and magnetic energy.
This is a photon container:=20
http://www.androcles01.pwp.blueyonder.co.uk/AC/oscillator.JPG
You'll find it schematically here:=20
http://www.biology.utah.edu/goldenberg/radioPics/tank.png
http://www.1632.org/1632tech/faqs/radio-imgs/radio-spark-crystal-6.gif
http://imagenisp.ca/jsm/100WTX.GIF
Not quite so easy to see in the latter diagram, but it is there.

Because if this is the case, then the mental image they teach in
school is completely wrong since most of us see it as an ocean wave
(like a sine graph) when really it is more like a light being dimmed
off and on (obviously, if my idea is correct there is no way we can
represent light like anything else because it is a class of it's own)
=20
Basically, the sine graphs they show us throws us off because we tend
to take that literally (like most students in my electricity class
still think that electricity travels like the wave of an ocean :P )

.

User: "Michael Gray"

Title: Re: Light 'wave' physics 04 Feb 2007 11:42:48 PM
On 4 Feb 2007 15:24:57 -0800, "Ghent" <jabriol@hotmail.com> wrote:
- Refer: <1170631497.682738.207410@v33g2000cwv.googlegroups.com>


:
Go and suck an Elder's *****, jabriol.
--
.


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