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R2-D2 (/ ˌ ɑːr. t uː ˈ d iː t uː /) or Artoo-Detoo [1] is a fictional robot character in the Star Wars franchise created by George Lucas.He has appeared in ten of the eleven theatrical Star Wars films to date, including every film in the "Skywalker Saga", which includes the original trilogy, the prequel trilogy and the sequel trilogy.
Meaning SI unit of measure alpha: alpha particle: angular acceleration: radian per second squared (rad/s 2) fine-structure constant: unitless beta: velocity in terms of the speed of light c: unitless beta particle: gamma: Lorentz factor: unitless photon: gamma ray: shear strain: radian
S represents the light source, while r represents the measured points. The lines represent the flux emanating from the sources and fluxes. The total number of flux lines depends on the strength of the light source and is constant with increasing distance, where a greater density of flux lines (lines per unit area) means a stronger energy field.
A branch of physics that studies atoms as isolated systems of electrons and an atomic nucleus. Compare nuclear physics. atomic structure atomic weight (A) The sum total of protons (or electrons) and neutrons within an atom. audio frequency A periodic vibration whose frequency is in the band audible to the average human, the human hearing range.
Before Newton's law of gravity, there were many theories explaining gravity. Philoshophers made observations about things falling down − and developed theories why they do – as early as Aristotle who thought that rocks fall to the ground because seeking the ground was an essential part of their nature.
The set of coordinates that define the position of a reference point and the orientation of a coordinate frame attached to a rigid body in three-dimensional space form its configuration space, often denoted () where represents the coordinates of the origin of the frame attached to the body, and () represents the rotation matrices that define the orientation of this frame relative to a ground ...
The external surface area A of the cap equals r2 only if solid angle of the cone is exactly 1 steradian. Hence, in this figure θ = A /2 and r = 1 . The solid angle of a cone with its apex at the apex of the solid angle, and with apex angle 2 θ , is the area of a spherical cap on a unit sphere
R2 (Rock'n'Reel), a British music magazine; R2-D2, a character from Star Wars films and books, nickname R2; Code Geass: Lelouch of the Rebellion R2, a 2008 anime series; Resistance 2, a video game; Relapse 2, a 2009 album by rapper Eminem; Patricio Rey y sus Redonditos de Ricota or R2, an Argentine rock band; Region 2, a DVD region code