Litmus "Lecanora tartarea" (Norway, Sweden), "Variolaria dealbata", "Ochrolechia parella", "Parmotrema tinctorum", and "Parmelia". Currently, the main sources are "Roccella montagnei" (Mozambique) and "Dendrographa leucophoea" (California). The main use of litmus is to test whether a solution is acidic or basic. Wet litmus paper can also be used to test for water-soluble gases that affect acidity or alkalinity; the gas dissolves in the water and the resulting solution colors the litmus paper. For instance, ammonia gas, which is alkaline, turn the red litmus paper blue. Blue litmus paper turns red under acidic conditions and red litmus paper turns blue under basic or
Squib (sketched concept or visual solution) verb ("let me squib something to show you what I mean"). First heard use: Alberta College of Art and Design, Calgary, Alberta, Canada. Circa 1987 Squib (sketched concept or visual solution) The term squib is sometimes used to describe a quick drawing of a visual composition or a proposed graphic solution. A rough sketch to demonstrate an idea. The origin of the term, "squib" as it relates to a sketched concept or idea is currently unknown, but has been adopted as industry slang by creative directors, art directors and designers in the creative advertising and marketing communications industries in Western