graphite grease
41Materials for use in vacuum — are materials showing very low rate of outgassing in vacuum, and, where applicable, tolerant to the bake out temperatures. The requirements grow increasingly stringent with the desired degree of vacuum achievable in the vacuum chamber. The… …
42Crayon — For other uses, see Crayon (disambiguation). Wax crayons A crayon (  / …
43List of Tamiya product lines — Over the years, the Tamiya Corporation has created a huge number of notable product lines, a large of these has since become collectable in its own right. Radio controlled vehiclesCars (1/12 scale)*The first radio controlled car to be released by …
44Lubricant — Lu bri*cant, n. That which lubricates; specifically, a substance, as oil, grease, graphite, etc., used for reducing the friction of the working parts of machinery. [1913 Webster] …
45Mica — For other uses, see Mica (disambiguation). Rock with mica …
46Bearing (mechanical) — A bearing is a device to allow constrained relative motion between two or more parts, typically rotation or linear movement. Bearings may be classified broadly according to the motions they allow and according to their principle of operation as… …
47Lubrication — is the process, or technique employed to reduce wear of one or both surfaces in close proximity, and moving relative to each another, by interposing a substance called lubricant between the surfaces to carry or to help carry the load (pressure… …
48Herdwick (sheep) — The Herdwick is a traditional breed of domestic sheep native to the mountainous Lake District of Cumbria in North West England. The name Herdwick is derived from the Old Norse herdvyck , meaning sheep pasture.cite journal last = Bryson first =… …
49Frazil ice — is a collection of loose, randomly oriented needle shaped ice crystals in water. It resembles slush and has the appearance of being slightly oily when seen on the surface of water. It sporadically forms in open, turbulent, supercooled water,… …
50Space Pen — The Space Pen (also known as the Zero Gravity Pen), marketed by [http://www.fisherpen.com/ Fisher Space Pen Co.] , is a pen that uses pressurised ink cartridges and is claimed to write in zero gravity, upside down, underwater, over wet and greasy …
