(of grain sizes)
61Yellowstone Lake — Infobox lake lake name = Yellowstone Lake image lake = lakeyellowstonebig.jpg caption lake = on a fall morning image bathymetry = caption bathymetry = location = Yellowstone National Park, Wyoming coords = coord|44|28|N|110|22|W|type:waterbody… …
62Texture — refers to the properties held and sensations caused by the external surface of objects received through the sense of touch. Texture is sometimes used to describe the feel of non tactile sensations. Texture can also be termed as a pattern that has …
63Optically stimulated luminescence — In physics, optically stimulated luminescence (OSL) is a method for measuring doses from ionizing radiation. The method makes use of electrons trapped between the valence and conduction bands in the crystalline structure of certain types of… …
64Tool steel — Iron alloy phases Ferrite (α iron, δ iron) Austenite (γ iron) Pearlite (88% ferrite, 12% cementite) …
65Meal powder — is the fine dust left over when black powder (gunpowder) is corned and screened to separate it into different grain sizes. It is used extensively in various pyrotechnic procedures, usually to prime other compositions. It can also be used in many… …
66Lake Grassmere — Infobox lake lake name = Lake Grassmere image lake = Cape Campbell sunrise.jpg caption lake = image bathymetry = caption bathymetry = location = Marlborough Region, South Island coords = coord|41|44|S|174|10|E|region:NZ… …
67Phosphorite — A phosphorite or phosphate rock is a non detrital sedimentary rock which contains high amounts of phosphate bearing minerals. The phosphate content of phosphorite is at least 20% which is a large enrichment over the typical sedimentary rock… …
68Skiddaw Slate — is an early Ordovician metamorphosed sedimentary rock, as first identified on the slopes of Skiddaw in the English Lake District.The base of this series is unknown. The thickness could, therefore, amount to several thousand feet of sediment.… …
69Honing (metalworking) — Honing is a manufacturing process that produces a precision surface on a workpiece by scrubbing an abrasive stone against it along a controlled path. Honing is primarily used to improve the geometric form of a surface, but may also improve… …
70emery — /em euh ree, em ree/, n. a granular mineral substance consisting typically of corundum mixed with magnetite or hematite, used powdered, crushed, or consolidated for grinding and polishing. [1475 85; < MF emeri, OF esmeril < VL *smericulum, equiv …
