  We show that Rindler horizons are entropic screens and gravity is an entropic
force in Rindler space by deriving the Verlinde entropy formula from the
focusing of light due to a mass close to the horizon. Consequently, gravity is
also entropic in the near horizon regions of Schwarzschild and de Sitter
space-times. In different limits, the entropic nature of gravity in Rindler
space leads to the Bekenstein entropy bound and the uncertainty principle.
