design on the base of optimal sum
41Bicycle and motorcycle dynamics — A computer generated, simplified model of bike and rider demonstrating an uncontrolled right turn. An …
42Diesel engine — Diesel engines in a museum Diesel generator on an oil tanker …
43Windsurfing — A windsurfer tilts the rig and carves the board to perform a planing jibe (downwind turn) close to shore at Maui, Hawaii …
44gravitation — gravitational, adj. gravitationally, adv. /grav i tay sheuhn/, n. 1. Physics. a. the force of attraction between any two masses. Cf. law of gravitation. b. an act or process caused by this force. 2. a sinking or falling …
45oxidation–reduction reaction — ▪ chemical reaction Introduction also called redox reaction any chemical reaction in which the oxidation number of a participating chemical species changes. The term covers a large and diverse body of processes. Many oxidation– reduction… …
46Scramjet — Part of a series on Aircraft propulsion Shaft engines (to drive pr …
47Stairway — Stairs redirects here. For other uses, see Stairs (disambiguation). Staircase redirects here. For other uses, see Staircase (disambiguation). This article is about the construction. For the song by Led Zeppelin, see Stairway to Heaven. Stairways… …
48nuclear weapon — an explosive device whose destructive potential derives from the release of energy that accompanies the splitting or combining of atomic nuclei. [1945 50] * * * or atomic weapon or thermonuclear weapon Bomb or other warhead that derives its force …
49river — river1 riverless, adj. riverlike, adj. /riv euhr/, n. 1. a natural stream of water of fairly large size flowing in a definite course or channel or series of diverging and converging channels. 2. a similar stream of something other than water: a… …
50RAID — This article is about the data storage technology. For other uses, see Raid (disambiguation). RAID, an acronym for Redundant Array of Independent Disks (originally Redundant Array of Inexpensive Disks),[1] is a storage… …
