Re: Doppler effect on the speed of light


Spaceman wrote:
"PD" <TheDraperFamily@xxxxxxxxx> wrote in message
news:1140107700.804088.221400@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
|
| Spaceman wrote:
| > "PD" <TheDraperFamily@xxxxxxxxx> wrote in message
| > news:1140098737.453678.317390@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
| > |
| > | Spaceman wrote:
| > | > "PD" <TheDraperFamily@xxxxxxxxx> wrote in message
| > | > news:1140045474.527533.65880@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
| > | > | You mean, as an example of "some cases"?
| > | > | This happens colliding protons on protons, for example. But it
also
| > | > | happens colliding protons on lead bricks.
| > | >
| > | > I am talking about trying to get FTL speeds
| > | > from Protons hitting something, how small would that
| > | > "something" have to be to get such a faster hit?
| > | > mass vs mass.
| > | > :)
| > | >
| > | > If the proton was doing 0.9c what mass would have to
| > | > be hit by the proton for it to "newtonianly" hit c or even pass c
| > | > by just the basic KE type thinking?
| > |
| > | In an elastic collision, the relative velocity between the two
| > | colliding objects stays the same, "newtonianly". If one of the
| > | colliding objects is big enough where it doesn't slow down much, this
| > | can have dramatic effects, "newtonianly". For example, a baseball
| > | pitched at 90 mph comes at a bat swung at 60 mph, for a relative
| > | velocity of 150 mph. After the impact, the bat doesn't slow down much,
| > | because it is attached to the mass of the batter's body, and so it
| > | continues on at, say, 58 mph. This means that the baseball heads
toward
| > | the outfield at 208 mph. This is why a baseball can be hit into the
| > | bleachers even if it can't be thrown into the bleachers, even though
| > | the bat is going slower than the pitcher's arm.
| > |
| > | I'll let you figure out how this applies to a proton and what it would
| > | have to hit to go faster than c, "newtonianly". It turns out that it's
| > | not a very demanding requirement. And so the fact that we can NOT get
| > | it going faster than c "newtonianly" is significant.
| >
| > All very nice stuff, but no answer of course.
|
| As I said in another area, I see no reason to spoonfeed you. If you
| want a fish, I'll bait the hook and hand you the rod. You catch the
| fish.

Handing a man a fishing pole and yet not knowing how to fish
yourself is a sad way to feed people.

When someone hands you a fishing pole complete with bait, it's not wise
to say, "I asked you for a fish. You must not know how to fish!"

PD

.

Relevant Pages

  • Re: Doppler effect on the speed of light
    ... | Spaceman wrote: ... |> | colliding objects is big enough where it doesn't slow down much, ... |> | bleachers even if it can't be thrown into the bleachers, ... | want a fish, I'll bait the hook and hand you the rod. ...
    (sci.physics)
  • Re: Doppler effect on the speed of light
    ... | Spaceman wrote: ... |> | want a fish, I'll bait the hook and hand you the rod. ... | When someone hands you a fishing pole complete with bait, ... You keep handing the pole off to others to learn when you have ...
    (sci.physics)
  • Re: Doppler effect on the speed of light
    ... | Spaceman wrote: ... |> | want a fish, I'll bait the hook and hand you the rod. ... | When someone hands you a fishing pole complete with bait, ... You keep handing the pole off to others to learn when you have ...
    (sci.physics)
  • Re: How would you explain it?
    ... I had something like that happen fishing crank baits for bass last year. ... We had to fish very fast to get them to chase and/or bite. ... deliberately jerking a bait away from them. ...
    (rec.outdoors.fishing.fly)
  • Re: Tying braided line to regular mono
    ... CalifBill wrote: ... Swivels are too visible to fish. ... Perhaps on those boats, "one has someone" to do the nasty ... can I handle my own bait and fish? ...
    (rec.boats)
Quantcast