alkali-fast dye

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• alkali fast green 10 G — noun Usage: usually capitalized A&F&G : an acid dye see dye table I (under Acid Green 22) …   Useful english dictionary

• iron buff — noun : a fast dye composed of hydrated ferric oxide formed on the fiber by the action of an alkali on an iron salt …   Useful english dictionary

• photography, technology of — Introduction       equipment, techniques, and processes used in the production of photographs.  The most widely used photographic process is the black and white negative–positive system (Figure 1 >). In the camera the lens projects an image of… …   Universalium

• Farbstoffe [2] — Farbstoffe, pflanzliche, sind in den Pflanzen entweder als solche schon enthalten oder sie entstehen aus einem sogenannten (meist farblosen) Chromogen, einem Pflanzenkörper, der durch eine nachträgliche technische Behandlung sich in den Farbstoff …   Lexikon der gesamten Technik

• spectroscopy — spectroscopist /spek tros keuh pist/, n. /spek tros keuh pee, spek treuh skoh pee/, n. the science that deals with the use of the spectroscope and with spectrum analysis. [1865 70; SPECTRO + SCOPY] * * * Branch of analysis devoted to identifying… …   Universalium

• stain — 1. To discolor. 2. To color; to dye. 3. A discoloration. 4. A dye used in histologic and bacteriologic technique. 5. A procedure in which a dye or combination of dyes and reagents is used to color the constituents of cells and tissues. For… …   Medical dictionary

• Mathematics and Physical Sciences — ▪ 2003 Introduction Mathematics       Mathematics in 2002 was marked by two discoveries in number theory. The first may have practical implications; the second satisfied a 150 year old curiosity.       Computer scientist Manindra Agrawal of the… …   Universalium

• sodium — /soh dee euhm/, n. 1. Chem. a soft, silver white, metallic element that oxidizes rapidly in moist air, occurring in nature only in the combined state, and used in the synthesis of sodium peroxide, sodium cyanide, and tetraethyllead: a necessary… …   Universalium

• Caesium — xenon ← caesium → barium Rb ↑ Cs ↓ Fr …   Wikipedia

• Haematoxylin — IUPAC name 7,11b dihydroindeno[2,1 c]chromene 3,4,6a,9,10(6H) pentol …   Wikipedia

• Fishkeeping — is a popular hobby concerned with keeping fish in the home aquarium or garden pond. Types of fishkeeping The hobby can be broadly divided into three specific disciplines, freshwater, brackish, and marine (also called saltwater) fishkeeping.… …   Wikipedia