Margie; When a sunbeam shines into a darkened room and we can see the dust moats floating in the air that is what is called the Tyndall Effect.
When you shine a laser beam or narrow flashlight bean through a colloid you will see a beam of light in the solution. Water does not show a beam as it is not a colloidial suspension. Robert -- 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: silver-list-requ...@eskimo.com -or- silver-digest-requ...@eskimo.com with the word subscribe or unsubscribe in the SUBJECT line. To post, address your message to: silver-list@eskimo.com List maintainer: Mike Devour <mdev...@id.net>