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.
now lets get to lumens a lumen is a unit of measurement of light it measures light much the same way remember a foot candle is how bright the light is one foot away from the source a lumen is a way of measuring how much light gets to what you want to light a lumen is equal to one foot candle falling on one square foot of area