Question

what is lumen? Explain it in easy words​

Answer 1

Answer:

Lumens measure how much light you are getting from a bulb. More lumens means it's a brighter light; fewer lumens means it's a dimmer light.

Answer 2

Lumen: A luminous term referring to the channel within a tube such as a blood vessel or to the cavity within a hollow organ such as the intestine.

For example1-in arteriosclerosis, fat deposits narrow the lumen of the artery.

For another example 2-cells called enetrocytes within the intestinal wall help transport water from the lumen of the intestine into the bloodstream.