What does mW mean?

[entehrend]

I guess its how powerful your laser is, like mine is 95mW.
But what does the mW stand for?

 

[likewhat]

W is for watt which is a joule/second.
m is for milli or 1/1000.

So your laser is 95 mW which means it is 0.095 watts or in 1 second it puts out .095 joules of energy.

Sometimes people capitalize the m which is wrong because a capital M is for Mega or million, laser pointers dont put out millions of watts.

 

[f22warzone]

well they dont yet : )

 

[a_pyro_is]

Check out my post here for a link to 'Basic EE Lessons' Have a look at the measurements chapter. Also read the Wiki on Electric Power
Hope it helps.