Google's Gmail Web-based email service runs on the Internet Message Access Protocol system, but it also offers Post Office Protocol mail server access.
Definition of LUMEN. 1. 2. : the bore of a tube (as of a hollow needle or catheter). 3. : a unit of luminous flux equal to the light emitted in a unit solid angle by a uniform point source of one candle intensity.
Lumen is a measure of amount of light emitted by the projector; in laymanâs terms, the brightness. A low lumen value â 1500 or less â will only be visible in a dark room. 3000 lumen and higher will be visible in daylight, but truthfully any projected image will look better when thereâs less ambient light.