Igor wrote:
> Mike wrote:
> > Igor wrote:
> > > Mike wrote:
> > > > TrekJunky wrote:
> > > > > Hello Sue,
> > > > >
> > > > > I would like to answer you question about how I would measure the mass
> > > > > of light. I would like to approach it by stating a few facts to see if
> > > > > you agree with them:
> > > >
> > > > Light has no mass, or if it has some it is beyond any measurement
> > > > accuracy.
> > > >
> > > > > 1) Solar Sail space ships are propelled by the pressure of light on the
> > > > > "sails" not solar wind(subatomic particles) as some might think.
> > > >
> > > > That is not your usual notion of pressure.
> > >
> > > Why not?  Light has momentum.  Momentum changing direction exerts
> > > force.  And force per unit area is pressure.  It's that simple.
> > >
> >
> > Idiot. Are you the sam eposter asking these stupid questions? How do
> > you make light change direction other than making it pass through a
> > gravity field?
>
> What?  No mirrors in your world?  You need to really learn some basic
> physics.  And I mean from a proven reputable source.  Till then, you
> can wallow in your own pathetic ignorance.

Do you think by shinning light on a mirror you exert pressure on the
mirrror?

where the hell did you stydy physics?

Mike