Re: [Phys-l] (no subject)

[Bernard Cleyet <bernardcleyet@redshift.com>]

I think you've confused an earlier post w/the one to which I've replied.

There was nothing about infinities.

bc OTOH, perhaps he misread the post.  AND awaits an answer about frequency shift. (momentum reduction).



On 2011, Feb 27, , at 17:49, carmelo@pacific.net.sg wrote:

> How about can you move a mirror on the floor with the photons emitted  
> from your torchlight? Let's not ignore friction which exists in the  
> real world.
> Radiometer is not massive too. :-)
>
> Quoting Bernard Cleyet <bernardcleyet@redshift.com>:
>
> > Now I'm puzzled.
> >
> > Photons have momentum, so I'd think the mirror would absorb some of   
> > the momentum and result in a frequency shift on the photon.  Not   
> > measurable because of the disparity in momenta.  OTOH, how about the  
> > radiometer?  The "real" one, not the fake ones that depend on a   
> > little gas in the bulb.
> >
> > bc





On 2011, Mar 01, , at 17:17, carmelo@pacific.net.sg wrote:

> Quoting Bernard Cleyet <bernardcleyet@redshift.com>:
> > On 2011, Feb 28, , at 16:35, carmelo@pacific.net.sg wrote:
> >
> > > What if the mass of space craft approaches infinity?
> >
> > Is that relevant?
>
> Oui!
>
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