"M. G. Devour" wrote: > > Dark field microscopes might work. [no clue. I've seen some very > > interesting photos that might have been done that way] > > What is the highest magnification possible with a dark field > microscope? It's not going to be anything like an electron microscope > so is it useful at all for characterizing CS particles?
A dark field microscope uses light coming in from the side to illuminate the particles. What it is viewing is the Rayleigh scattering ( Tyndall ) from each particle. Since only particles approximately the wavelength of light and larger can be imaged, but particles 1/1000 the wavelength of light can scatter the light causing tyndall, it allows one to see particles that are much too small to be seen with a conventional microscope. The other side of the coin is that for all practical purposes such small particles will always appear as a dot approximately the wavelength of the light no matter what their shape if they are under a wavelength of light in size. Marshall -- The Silver List is a moderated forum for discussing Colloidal Silver. Instructions for unsubscribing are posted at: http://silverlist.org To post, address your message to: [email protected] Address Off-Topic messages to: [email protected] The Silver List and Off Topic List archives are currently down... List maintainer: Mike Devour <[email protected]>
