Lunar Rover

[Industrial Toys]

Not even sure what kidding is anymore. Let's just say, I don't believe much of anything anymore and there is more and more compelling evidence to support strange thinking. Maybe we do live in a Matrix and round or flat could be a moot point.

I consider myself to be quite discerning. Just the bits and pieces I see of certain material make me sit up and take interest.

Besides. It seems the masses will believe just about anything. It's what Adolf ****** liked about the masses so much.

But back to the questions. So what is in a vaccume? How can radio waves propagate in a vaccume?

 

[k0ua]

OK. I finally figured out I am being "played". I am done. Have a nice day.

 

[MossRoad]

OK. I finally figured out I am being "played". I am done. Have a nice day.

:mur:

 

[Industrial Toys]

No, not at all. Any of these vaccume questions are mine and not something I have seen elsewhere.

I appreciate being informed. Thank You.

 

[RoyKing]

gravity is the only that that beats time, faster than light

 

[sd455dan]

gravity is the only that that beats time, faster than light

Most info I could find say Gravity waves travel at light speed same as photons

BUT

compress and expand space/time fabric...

So isn't this a paradox??

 

[RoyKing]

Two gravitoelectrically interacting particle ensembles, e.g., two planets or stars moving at constant velocity with respect to each other, each feel a force toward the instantaneous position of the other body without a speed-of-light delay because Lorentz invariance demands that what a moving body in a static field sees and what a moving body that emits that field sees be symmetrical.
A moving body's seeing no aberration in a static field emanating from a "motionless body" therefore causes Lorentz invariance to require that in the previously moving body's reference frame the (now moving) emitting body's field lines must not at a distance be retarded or aberred. Moving charged bodies (including bodies that emit static gravitational fields) exhibit static field lines that bend not with distance and show no speed of light delay effects, as seen from bodies moving with regard to them.
In other words, since the gravitoelectric field is, by definition, static and continuous, it does not propagate. If such a source of a static field is accelerated (for example stopped) with regard to its formerly constant velocity frame, its distant field continues to be updated as though the charged body continued with constant velocity. This effect causes the distant fields of unaccelerated moving charges to appear to be "updated" instantly for their constant velocity motion, as seen from distant positions, in the frame where the source-object is moving at constant velocity. However, as discussed, this is an effect which can be removed at any time, by transitioning to a new reference frame in which the distant charged body is now at rest.

 

[bcp]

So that's why my last tree fell off direction a bit when it started moving. Gravity changed its point of reference.



Bruce

 

[MossRoad]

Potato.

 

[quicksandfarmer]

No, not at all. Any of these vaccume questions are mine and not something I have seen elsewhere.

I appreciate being informed. Thank You.

Here's a good example of how gas has mass and can impart thrust: get a C02 fire extinguisher. Sit in a swivel chair with your feet off the ground and deploy the extinguisher. You'll go off scooting in the other direction.

Here's a Youtube clip:
Motorised chair by fire extinguisher - YouTube