retract
111Homotopy — This article is about topology. For chemistry, see Homotopic groups. The two dashed paths shown above are homotopic relative to their endpoints. The animation represents one possible homotopy. In topology, two continuous functions from one… …
112Mercury-Redstone 4 — Mission insignia Mission statistics Mission name Mercury Redstone 4 Spacecraft name Liberty Bell 7 Spacecraft mass 1,286 …
113Mercury-Atlas 6 — For the Looking Glass airplane, see E 6 Mercury. Mercury Atlas 6 Mission insignia Mission statistics Mission name Mercury Atlas 6 Spacecraft name Friendship 7 …
114José Rizal — This article is about the Philippine national hero. For other uses, see José Rizal (disambiguation). José Protacio Rizal Mercado y Alonzo Realonda José Rizal, the national hero of the Philippines. Born June 19, 1861 Calamba City, Laguna …
115Keel — In boats and ships, keel can refer to either of two parts: a structural element, or a hydrodynamic element. These parts overlap. As the laying down of the keel is the initial step in construction of a ship, the construction is dated from this… …
116Hermit crab — Hermit crabs Temporal range: 136–0 Ma …
117Go-around — A go around is an aborted landing of an aircraft which is on final approach. Origin of the term The term arises from the traditional use of circuits at airfields a landing aircraft will first join the circuit pattern and prepare for landing in an …
118Injection molding — (British: moulding) is a manufacturing process for producing parts from both thermoplastic and thermosetting plastic materials. Molten plastic is injected at high pressure into a mold, which is the inverse of the product s shape. After a product… …
119Speaker of the Australian House of Representatives — The Speaker of the House of Representatives is the presiding officer of the House of Representatives, the lower house of the Parliament of Australia. The other presiding officer is the President of the Senate.The office of Speaker is created by… …
120Third rail — For other uses, see Third rail (disambiguation). Third rail at the West Falls Church Metro station near Washington, D.C., electrified at 750 volts. The third rail is at the top of the image, with a white canopy above it. The two lower rails… …
