A laser pointer is a thing which can light up you life, more over , it can abcdfg all about my story and so on.

A laser pointer is a small, hand held laser device often used for pointing at objects . A laser pointer is becoming more popular in presentation.
Green laser pointer (532nm) is the brightest compared to red laser pointer(650nm). This is because the human eye is very sensitive to the color green making it appear much brighter.
Laser power is the power emitted by laser pointer and is usually measured in mW( milli-watts). The laser becomes brighter with stronger burning capabilities as you increase in power.