Archived posting to the Leica Users Group, 2005/04/29
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Ah, Clive - a true chemist in the group! I liked to imagine Linus Pauling excitedly jumping up and down between electron energy levels as he discovered the quantum-state orbital properties of atoms. Of course, this is on-topic since panchromatic film was invented when photographic chemists discovered that light sensitive dyes could be added to film emulsion. The dyes would absorb low level energy light at the red side of the spectrum, where silver halide is not sensitive. The electron in the dye molecule jumps to a higher quantum state. When the electron falls back down to the lower stable state orbital, it releases energy that the silver halide crystal can absorb. Viola! A latent image. All because of Quantum Leaps. Yes, a VERY small distance. Gary Todoroff (Tree LUGger) (B.S. Chemistry, Antioch 1970) -----Original Message----- From: lug-bounces+datamaster=northcoastphotos.com@leica-users.org [mailto:lug-bounces+datamaster=northcoastphotos.com@leica-users.org]On Behalf Of Clive Moss Sent: Thursday, April 28, 2005 10:47 PM To: Leica Users Group Subject: Re: [Leica] Re: digital transformation Naah -- photography stopped when Kodak started. If you do not coat your own glass plates, it is not photography -- its cellulosography. Flexible film was a huge leap (way bigger than quantum, which is pretty small, actually. Quantum leap is about as small as a leap can be. I have never leaped that small a distance.) On 4/28/05, Montie Talbert <montoid@earthlink.net> wrote: ... > I dislike the term Digital "Photography". Digital is such a quantum leap in > the evolution of imagery acquisition/creation it should be given it's own space, > it's own name, it's own discipline!... -- Clive Pics: http://clive.smugmug.com _______________________________________________ Leica Users Group. See http://leica-users.org/mailman/listinfo/lug for more information -- No virus found in this incoming message. Checked by AVG Anti-Virus. Version: 7.0.308 / Virus Database: 266.11.0 - Release Date: 4/29/2005 -- No virus found in this outgoing message. Checked by AVG Anti-Virus. Version: 7.0.308 / Virus Database: 266.11.0 - Release Date: 4/29/2005