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Glossary

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S

  • strophanthus

    A name for a group of shrubs from central Africa. One variation of strophanthus is used in a drug to stimulate the heart after heart failure.

  • strychnine

    A naturally occurring drug derived from trees. In small doses strychnine functions as a central nervous system stimulant, but in higher doses it is extremely poisonous.

  • stylophone

    Miniature stylus-operated synthesizer invented in 1967 by Brian Jarvis. It consists of a metal keyboard played by touching it with a stylus — each note being connected to a voltage-controlled oscillator via a different-value resistor - thus closing a circuit.

  • sub miniature camera

    An unusually small camera using film that is smaller than normal. The best known subminiature formats are -- Minox (8x11 mm), Kodak disc (8x11 mm), 16 mm (10x14 mm), Super 16 mm (12x17 mm), 110 film (13x17 mm), Tessina (14x21 mm) and half-frame (18x24 mm).

  • sublimation apparatus

    A piece of laboratory apparatus where a compound to be sublimed is placed and a cooler section above this where the purified material will collect. Typically, the compound is heated and collected on a chilled piece called a cold finger. Usually, but not always, the sublimation is performed under reduced pressure.

  • submarine

    Vessel capable of continuous, extended underwater voyages under their own power without surfacing; often naval combatant vessels. For vessels capable of complete submersion for only limited amounts of time and which may or may not move under their own power, use "submersibles."

  • suffrage

    The right to vote and own property

  • sugar bowl

    Bowls of varying form intended primarily for holding and serving sugar; made as an individual piece, to match a creamer, or as part of a tea or coffee service.

  • sugar tongs

    Tongs, usually silver, with claw-shaped or spoon-shaped ends for serving lumps of sugar. W.

  • sulfa drug

    A group of antibiotics. Sulfa drugs were ‘wonder-drugs’ before penicillin and other antibiotics. They were used to treat diseases such as bronchitis and pneumonia.

  • sulphanilamide

    A form of sulphonamide used in the treatment of various bacterial infections.

  • sulphonamides

    Antibacterial drugs used to treat diseases like bronchitis and pneumonia, derived from sulphanilamide

  • sundial

    Instrument that indicate approximate time of day from a shadow cast by a gnomon in sunlight onto a graduated surface

  • sun-glasses

    Eyeglasses, usually spectacles, with coloured or tinted lenses that protect the eyes from the glare of sunlight.

  • supercoiling

    A form of DNA where the double helix is twisted further around itself. This generally occurs in nature to allow the DNA to condense into living cells.

  • superheater

    A device for raising the temperature of steam once generated in order to increase the expansion of the steam after it has left the boiler and before it reaches the steam chests.

  • superheater header

    The connection box mounted in the smokebox next to the tube plate containing the incoming saturated steam and the tubes for superheating the steam.

  • suppository

    A drug that is inserted into the rectum, vagina or urethra, where it dissolves.

  • suramin

    a nonmetallic drug that may be used in the treatment of sleeping sickness

  • surface plate

    A solid, flat plate used as the main horizontal reference plane for precision inspection, marking out (layout), and tooling setup. The surface plate is often used as the baseline for all measurements to the workpiece.

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