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Litmus   Listen
noun
Litmus  n.  (Chem.) A dyestuff extracted from certain lichens (Roccella tinctoria, Lecanora tartarea, etc.), as a blue amorphous mass which consists of a compound of the alkaline carbonates with certain coloring matters related to orcin and orcein. Note: Litmus is used as a dye, and being turned red by acids and restored to its blue color by alkalies, is a common indicator or test for acidity and alkalinity.
Litmus paper (Chem.), unsized paper saturated with blue or red litmus, used in testing for acids or alkalies.






Collaborative International Dictionary of English 0.48








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"Litmus" Quotes from Famous Books



... only propounded the Problem definitely, he has also invented definite methods for its solution. Posthypnotic suggestion, crystal-gazing, automatic writing and trance-speech, the willing-game, etc., are now, thanks to him, instruments of research, reagents like litmus paper or the galvanometer, for revealing what would otherwise be hidden. These are so many ways of putting the Subliminal on tap. Of course without the simultaneous work on hypnotism and hysteria independently begun by others, he could not have pushed his own ...
— Memories and Studies • William James

... different articles, including chemicals, test-tubes, adjustable ring-stand, litmus paper, filter paper, glass tubing, etc.; in fact, everything needed for the forty-one experiments. The Book of Instructions is fully illustrated, ...
— How Two Boys Made Their Own Electrical Apparatus • Thomas M. (Thomas Matthew) St. John

... had a personal interest in the subject under discussion. Indeed one of his hearers was to suffer the advanced stage of this dread disease within six months. Atkinson inclined to Almroth Wright's theory that scurvy is due to an acid intoxication of the blood caused by bacteria. He described the litmus-paper test which was practised on us monthly, and before and after sledge journeys. In this the blood of each individual is drawn and various strengths of dilute sulphuric acid are added to it until it is neutralized, the healthy man showing normal 30 to 50, while the man with ...
— The Worst Journey in the World, Volumes 1 and 2 - Antarctic 1910-1913 • Apsley Cherry-Garrard

... people. It is the great neutral centre of the Continent, where the fiery enthusiasms of the South and the keen fanaticisms of the North meet at their outer limits, and result in a compound that turns neither litmus red nor turmeric brown. It lives largely on its traditions, of which, leaving out Franklin and Independence Hall, the most imposing must be considered its famous water-works. In my younger days I visited Fairmount, ...
— Atlantic Monthly, Vol. 10, No. 62, December, 1862 • Various

... action of sulphuric acid upon soda results in nothing which makes the action conspicuous; if, however, litmus or phenolphthalein be added the change from blue to red in the first case, or from red to colourless in the second, renders the finishing-point evident. Some indicators cannot be added to the assay solution without spoiling the result; in which case portions of the assay solution ...
— A Textbook of Assaying: For the Use of Those Connected with Mines. • Cornelius Beringer and John Jacob Beringer



Words linked to "Litmus" :   litmus test



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