left-hand helix
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left-hand screw thread — noun : a screw thread whose helix moves upward when the screw is inserted vertically from above in a fixed mating thread and turned clockwise … Useful english dictionary
Helix angle — In mechanical engineering, a helix angle is the angle between any helix and an axial line on its right, circular cylinder or cone. [ANSI/AGMA. ANSI/AGMA Standards 1012 G05 Gear Nomenclature, Definitions of Terms with Symbols. American Gear… … Wikipedia
Pi helix — Side view of a standard π helix of L alanine residues in atomic detail. Two hydrogen bonds to the same peptide group are highlighted in magenta; the oxygen hydrogen distance is 1.65 Å (165 pm). The protein chain runs upwards, i.e., its N terminus … Wikipedia
Spirulina (dietary supplement) — Taxobox color = lightgrey name = Spirulina image width = 200px domain = Bacteria phylum = Cyanobacteriaassis = Chroobacteria ordo = Oscillatoriales familia = Phormidiaceae genus = Arthrospira subdivision ranks = Species subdivision = About 35. *… … Wikipedia
Circular polarization — The electric field vectors of a traveling circularly polarized electromagnetic wave. In electrodynamics, circular polarization[1] of an electromagnetic wave is a polarization in which the electric field of the passing wave does not change… … Wikipedia
List of gear nomenclature — Gears have a wide range of unique terminology known as gear nomenclature. Many of the terms defined cite the same reference work.[1] Contents 1 Addendum 2 Addendum angle 3 Addendum circle … Wikipedia
Darkspore — cover art Developer(s) Maxis Software Publisher(s) … Wikipedia
Milling cutter — Milling cutters are cutting tools typically used in milling machines or machining centres (and occasionally in other machine tools). They remove material by their movement within the machine (e.g., a ball nose mill) or directly from the cutter s… … Wikipedia
Chirality — For other uses, see Chirality (disambiguation). Two enantiomers of a generic amino acid Chirality, pronounced //kaɪˈrælɪtiː// is a property of asymmetry important in several branches of science. The word chirality is derived from the … Wikipedia
Wire rope — consists of several strands laid (or twisted ) together like a helix. Each strand is likewise made of metal wires laid together like a helix. Initially wrought iron wires were used, but today steel is the main material used for wire ropes.History … Wikipedia
Chirality (electromagnetism) — Chirality with hands and two enantiomers of a generic amino acid. The term chiral (pronounced /ˈkaɪrəl/) describes an object, especially a molecule, which has or produces a non superimposeable mirror image of itself. In chemistry, such a … Wikipedia
