longitudinal momentum
61Orbital resonance — For the science fiction novel by John Barnes, see Orbital Resonance (novel). In celestial mechanics, an orbital resonance occurs when two orbiting bodies exert a regular, periodic gravitational influence on each other, usually due to their… …
62Propeller — A propeller is essentially a type of fan which transmits power by converting rotational motion into thrust for propulsion of a vehicle such as an aircraft, ship, or submarine through a mass such as water or air, by rotating two or more twisted… …
63Resonance — This article is about resonance in physics. For other uses, see Resonance (disambiguation). Resonant redirects here. For the phonological term, see Sonorant. Increase of amplitude as damping decreases and frequency approaches resonant frequency… …
64Sex education — Sex Ed redirects here. For other uses see Sex Ed (disambiguation). Barbara Hastings Asatourian of the University of Salford demonstrates Contraception , a sex education board game played in UK schools. Sex education refers to formal programs of… …
65Dimensionless quantity — In dimensional analysis, a dimensionless quantity or quantity of dimension one is a quantity without an associated physical dimension. It is thus a pure number, and as such always has a dimension of 1.[1] Dimensionless quantities are widely used… …
66Rocket engine — RS 68 being tested at NASA s Stennis Space Center. The nearly transparent exhaust is due to this engine s exhaust being mostly superheated steam (water vapor from its propellants, hydrogen and oxygen) …
67Rankine–Hugoniot equation — The Rankine–Hugoniot equation governs the behaviour of shock waves normal to the oncoming flow. It is named after physicists William John Macquorn Rankine and Pierre Henri Hugoniot, French engineer, 1851 1887.The idea is to consider one… …
68Aerobatic maneuver — The UK Utterly Butterly display team perform an aerobatic maneuver with their Boeing Stearmans, at an air display in England. Aerobatic maneuvers are flight paths putting aircraft in unusual attitudes, in air shows, dog fights or competition… …
69Atmospheric wave — An atmospheric wave is a periodic disturbance in the fields of atmospheric variables (like surface pressure or geopotential height, temperature, or wind velocity) which may either propagate ( traveling wave ) or not ( stationary wave ).… …
70Armónicos esféricos — Saltar a navegación, búsqueda En matemáticas, los armónicos esféricos son funciones armónicas que representan la variación espacial de un conjunto ortogonal de soluciones de la ecuación de Laplace cuando la solución se expresa en coordenadas… …
