center holes
81Lathe — A lathe (pronEng|ˈleɪð) is a machine tool which spins a block of material to perform various operations such as cutting, sanding, knurling, drilling, or deformation with tools that are applied to the workpiece to create an object which has… …
82Marble (toy) — For the stone, see marble. For other uses, see Marble (disambiguation). Hand made marbles from West Africa …
83Golf glossary — The following is a glossary of the terminology used in the sport of golf. Where words in a sentence are also defined elsewhere in this article, they appear in italics. A :; Ace: when a player hits the ball directly from the tee into the cup with… …
84Punch (metalworking) — A punch is a hard metal rod with a shaped tip at one end and a blunt butt end at the other that is usually struck by a hammer. A variety of punches are used in engineering, but often the purpose is to form an impression of the tip on a workpiece …
85Mario Rabinowitz — (born October 24, 1936) is an American physicist who has published 170 scientific papers on a wide variety of subjects such as Meissner effect, ball lightning, black holes, superconductivity, classical tunneling, nuclear electromagnetic pulse,… …
86M-sigma relation — The M sigma (or MBH σ) relation is an empirical correlation between the stellar velocity dispersion σ of a galaxy bulge and the mass M of the supermassive black hole at the galaxy s center. The relation can be expressed mathematically as A recent …
87Oak Tree National — Club information Location Edmond, Oklahoma, United States …
88Milky Way — This article is about the galaxy. For other uses, see Milky Way (disambiguation). Milky Way galaxy Image of the Milky Way s Galactic Center in the night sky above Paranal Observatory Observation data …
89Future of an expanding universe — Big Freeze redirects here. For other uses, see Big Freeze (disambiguation). Physical cosmology Univ …
90Formation des trous noirs — Trou noir Pour les articles homonymes, voir Trou noir (homonymie). Image simulée d’un trou noir stellaire situé à quelques dizaines de kilomètres d’un observateur et dont l’image se dessine …
