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Physics, Astronomy & Cosmology / Re: Does light have a weight?

« on: 30/06/2018 22:02:18 »

I do not deserve the thanks,  I've done nothing,  I'm the monkey not understanding why I can't grab the hologram banana.  bogie,  pmb, Bill,  Colin and kryptid, among others,  deserve the thanks.  I'm tempted to ask a couple black hole questions,  I think they relate too this discussion.  anyone object?

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Physics, Astronomy & Cosmology / Re: Does light have a weight?

« on: 19/05/2018 18:06:19 »

i had not considered if the turkey was frozen. .... I would think that would be a slight,  but, "negligible" density change.  Although definitely a hardness change.  I'm not sure how off subject that could be considered,  I'm the one talking about flies and turkeys flying around in a vacuum hitting alien cars.
I understand that the single fly impacting the car would have thus said negligible effect. .... what can
drop of water do? nothing (negligible) ..... yet over time things like the grand canyon,  and probably even our oceans them selves are created.  I have no interest in what one or 2 photons do to an object far away.  I'm going with the notion that millions of years of an endless barrage of photons,  however inversely squared,  must amount to something.  I'm sure the math could be done by someone much smarter then me.  I'll attempt to explain,  but practically guarantee I'm probably not going too use the correct terms,  so I'll take the liberty to try to think like someone smarter then i and create terms i think might be close enough.
example,  the light sail,  theoretically able to use light to get pushed,  need a relatively high "photon density " striking it to operate in a usable manner.  I'll make up a number,  let's say out needs 1 million photons per second per centimeter striking its surface to created 1g acceleration (I know those numbers are probably way off )
each photon has same impact energy,  correct? then could it not be said that 1 photon per second per centimeter would create 1 millionth of a g of thrust?  would the inverse square law balance the gravity of the two different light sails from a single light source so the both will accelerate,  one just taking a million times longer to accelerate?

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Physics, Astronomy & Cosmology / Re: Does light have a weight?

« on: 14/05/2018 23:22:25 »

my apologies for the rookie looking mistake of using weight when referring to mass,  but the impact imparted on a solar sail is exactly the weight I'm inquiring about.