Re: E = 1/2mv^2


Randy Poe wrote:
tomgee wrote:
PD wrote:
tomgee wrote:
PD wrote:
tomgee spluttered:
PD wrote:
tomgee foamed:
PD wrote:

[pointless dodging snipped]

SNIP

Um, no. You can only see whatever light illuminates. You can see the
source and the objects illuminated by the light, like a welder sees the
flame illuminated by the light, but you cannot see light itself. You
cannot see the em waves and the photons, you can only see through light
and not through the dark.

Ah, I see. So our retinas are tuned to respond to flashlights, not to
the light from flashlights. Right.

No, you don't see. You still don't get it. Our retinas do not respond
to light.
Our eyes respond to the intensity of light. Our retinas receive the em
waves
and the photon particles that is touching them at any given moment.
Our
optic nerves carry the data imprinted on the retinas by the light to
our brains
which then interpret the data.

More babble, Tom. You say our retinas "receive the em waves and the
photon particles that is touching them". EM waves and photon particles
are light. Substitute the synonym, and reread: "receive the light that
is touching them". And then you say "Our retinas do not respond to
light."

Yes. Your opinion is that our retinas have the capacity to respond to
light shone unto them,

That's correct.

yet everyone but you knows our retinas do not
respond to light,

No, nobody with a rudimentary knowledge of the retina
would say such a thing.

Patently false statement since I just said it.

The retina consists of sensing
cells which absorb photons, and put out signals
in response to those photons.

I don't think so. That means the retinas must have the means for
sensing and also for putting out signals. What are those means?

they simply act as screens onto which the data in a
light wave is impressed.

No they don't.

Yes they do.

The response of a retina cell
is proportional to (log of) light intensity.

So you agree with PD? Our retinas respond to the intensity of light?
The iris is redundant, then?

The
output is that encoded strength signal.

How does it put that signal out? By what process or mechanism? And
what is an "encoded strength" signal? Does it contain the strength of
the signal received, or does it contain other data? If the strength,
why? How does the signal strength translate into information?

But the
retina cells are the actual sensor. Beyond the first
layer of retina cells, it isn't light any more. It's
an encoded response to light.

And just what is that encoded response and what is the mechanism for
the encoding? Is it typed letters that describe what is impressed into
the screen? Is it pictures? Where are the pictures or data stored in
the light? What is the code?

The responding
happened in the retina.

How can that happen without any means in the retina to do that? You
sound confused. Your unsupported opinons are not worth the time it
took you to post them.

What, do you think the optic nerve is just a bunch
of optical fibers whose ends are the retina, and
the light goes unaltered down to the brain?

No, not at all. I think you show how dangerous a little knowledge can
be.

.