blue_eyes If this would give us a more accurate size of particles and give us a reference of how strong the CS is, I definitely would have an interest in the proposition, and probably many other readers would also have. However, I am not certain at this stage that the proposition would do that, unless additional information is provided to us as to how it would do that.
Regards Gaston ========================================================= ----- Original Message ----- From: "blue_eyes" <[email protected]> To: <[email protected]> Sent: Thursday, August 10, 2000 1:37 AM Subject: Re: CS>Introduction [harbor freight] > 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 for each wavelength. > > Based on some of the thoughts expressed on this list,it seems > we would expect to see changes in blue first,then green and > finally,red. Perhaps one might wish to stop brewing when a > certain reading in green or red is reached. > > This might give a qualitative spin on the conductivity readings. > Plotting conductivity versus Tyndall readings for a brewing run > might show something interesting. > > I have been keeping samples of each batch to check conductivity > and Tyndall effect over time as I seek to stabilize my process > and if this idea is workable, I could also check to see if there > are shifts in wavelength readings over time. If there is a shift > to higher readings in the green and red wavelengths,and the blue > readings go down, this might tell us something about the changes > in particle size as related to storage containers,light exposure, > etc. > > Just thinking out loud, does anyone else have an interest in this > sort of thing? > > David > ----------- > > "Robert L. Berger" wrote: > > > > 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 one for other color laser diodes. > > > > "Ole Bob" > > > > > s > > > > -- > > The silver-list is a moderated forum for discussion of colloidal silver. > > > > To join or quit silver-list or silver-digest send an e-mail message to: > > [email protected] -or- [email protected] > > with the word subscribe or unsubscribe in the SUBJECT line. > > > > To post, address your message to: [email protected] > > Silver-list archive: http://escribe.com/health/thesilverlist/index.html > > List maintainer: Mike Devour <[email protected]> > > -- > E-mail: [email protected] > Fax to: 1-253-681-1133 > ICQ#... 44960928 > > > _____NetZero Free Internet Access and Email______ > http://www.netzero.net/download/index.html >
