,
unless additional information is provided to us as to how it would do that.
Regards
Gaston
=
- Original Message -
From: "blue_eyes"
To:
Sent: Thursday, August 10, 2000 1:37 AM
Subject: Re: CS>Introduction [harbor freight
One must not confuse the tyndall with the absorption curve for CS. They
tyndall drops off rapidly with decreasing particle size, and
with increasing wavelength. Thus a blue beam will show a great deal more
tyndall than a red beam (that is why the sky and skim milk
appear blue). But I think the
I just wanted to tell someone: we have a beautiful
T.E. in our CS. We used an ordinary flashlight,
but in the dark, which I hadn't done before.
On 9 Aug 2000, at 16:37, blue_eyes wrote:
> Yes, I understand the need for a nice
> coherent beam if a person is going to eyeball
> it for the Tyndall
On Wed, 9 Aug 2000, blue_eyes wrote:
> I just checked the Mouser Electronics catalogue (on compact disk)
> and found "regular" LEDs that are blue (430nm), green (565nm),
> yellow (585nm) and red (660nm).
Of course, these put out a beam of light anywhere from 36 to
120 degrees wide, not the 1/2" c
Hi "Ole Bob",
Yes, I understand the need for a nice coherent beam if a
person is going to eyeball it for the Tyndall effect.
I was thinking more along the lines of having red,green and blue
LEDs on one side of the cell and light sensors on the other side to
measure the light transmission changes
Hi Blue eyes;
One needs laser diodes for this purpose and they come in 635 to 685 nanometers
which is in the IR zone. NEC manufacture on page
54 of Mouser cat.
I t might be possilbe to rig up a set of optics to focus the beam from a
standard diode but it wont be simple.
So the hunt is still on
Hi Folks,
I just checked the Mouser Electronics catalogue (on compact disk)
and found "regular" LEDs that are blue (430nm), green (565nm),
yellow (585nm) and red (660nm).
We could be on to something here.
David
rogalt...@aol.com wrote:
>Snip<
> I was wondering if anyone knew
Re: CS>Introduction [harbor freight]
Date: 8/9/00 6:49:29 AM EST
From: coy...@alltel.net (Ode Wan Coyote)
Reply-to: silver-list@eskimo.com
To:silver-list@eskimo.com
## Harbor Freight now sells online as well as by catalog. A good
company. I've used them for many years. Somet
In a message dated 8/9/00 6:49:29 AM EST, coy...@alltel.net writes:
<< Subj: Re: CS>Introduction [harbor freight]
Date: 8/9/00 6:49:29 AM EST
From: coy...@alltel.net (Ode Wan Coyote)
Reply-to: silver-list@eskimo.com
To:silver-list@eskimo.com
## Harbor Freight now sells
## Harbor Freight now sells online as well as by catalog. A good
company. I've used them for many years. Sometimes they have laser pointers
on sale for as little as $5I prefer the AAA battery type over the
button cell type as the batteries are much cheaper and longer lasting. Ken
htt
10 matches
Mail list logo
