small angle
121Tachymeter — A tachymeter or tacheometer is a kind of theodolite used for rapid measurements and determines, electronically or electro optically, the distance to target, and is highly automated in its operations. A tachymeter is also used as the name of the… …
122Keystone effect — The Keystone effect is caused by attempting to project an image onto a surface at an angle, as with a projector not quite centered onto the screen it is projecting on. It is a distortion of the image dimensions, making it look like a trapezoid.… …
123Trigonometry — Trig redirects here. For other uses, see Trig (disambiguation). The Canadarm2 robotic manipulator on the International Space Station is operated by controlling the angles of its joints. Calculating the final position of the astronaut at the end… …
124Radio-controlled model — A radio controlled model (or RC model) is a model that is steerable with the use of radio control. All types of vehicles imaginable have had RC systems installed in them, including cars, boats, planes, and even helicopters and scale railway… …
125Ray (optics) — Ray of light redirects here. For other uses, see Ray of light (disambiguation). In optics, a ray is an idealized narrow beam of light. Rays are used to model the propagation of light through an optical system, by dividing the real light field up… …
126Bell's theorem — is a theorem that shows that the predictions of quantum mechanics (QM) are not intuitive, and touches upon fundamental philosophical issues that relate to modern physics. It is the most famous legacy of the late physicist John S. Bell. Bell s… …
127Grade (slope) — d = run Δh = rise l = slope length α = angle of inclination This article is for the grade of a topographic feature or constructed element, for other uses see: Slope (disambiguation) The grade (also called slope, incline, gradient, pitch or rise)… …
128Ivy — Taxobox name = Hedera image caption = Hedera colchica image width = 240px regnum = Plantae divisio = Magnoliophyta classis = Magnoliopsida ordo = Apiales familia = Araliaceae subfamilia = Aralioideae genus = Hedera genus authority = L.… …
