grinding time
41River Don, South Yorkshire — River Don The River Don as it flows past Hillsborough Stadium. Origin Pennines …
42Evolution of the horse — This image shows a representative sequence but should not be construed to represent a straight line evolution of the horse. Reconstruction, left forefoot skeleton (third digit emphasized yellow) and longitudinal section of molars of selected… …
43perissodactyl — perissodactylous, adj. /peuh ris oh dak til/, adj. 1. having an uneven number of toes or digits on each foot. n. 2. any mammal of the order Perissodactyla, comprising the odd toed hoofed quadrupeds and including the tapirs, rhinoceroses, and… …
44agriculture, origins of — Introduction the active production of useful plants or animals in ecosystems that have been created by people. Agriculture has often been conceptualized narrowly, in terms of specific combinations of activities and organisms wet rice production… …
45Drill bit — For the fictional character, see Drill Bit (Transformers). For the cancelled skyscraper nicknamed Drill bit, see Chicago Spire. For the types used in drilling wells, see Well drilling. From top to bottom: Spade, lip and spur (brad point), masonry …
46Numerical control — CNC redirects here. For other uses, see CNC (disambiguation). A CNC Turning Center …
47Olive oil extraction — An olive mill and an olive press dating from Roman times in Capernaum, Israel. Olive oil extraction is the process of extracting the oil present in the olive drupes for food use. The oil is produced in the mesocarp cells, and stored in a… …
48Massively multiplayer online role-playing game — Part of a series on …
49Oberbrombach — Oberbrombach …
50Descartes: methodology — Stephen Gaukroger INTRODUCTION The seventeenth century is often referred to as the century of the Scientific Revolution, a time of fundamental scientific change in which traditional theories were either replaced by new ones or radically… …
