Is this not why the old Newtonian calculations were replaced by the Einstein ones?
Still we are suggesting its a force when in fact its not really, its the change in acceleration because of the warping of space time. Brian
Is this not why the old Newtonian calculations were replaced by the Einstein ones?
Still we are suggesting its a force when in fact its not really, its the change in acceleration because of the warping of space time. Brian
Hey, if that's what you say, I'm more than happy to accept your word on the subject. It's about time we went back to coal and started defoliating the Black Forest again; teach the Huns a lesson! Did you know they're forcing all British people in Germany to renounce their British citizenship if they want to stay after next March? Letting their true colours show now.
Are they re-opening Auschwitz-Birkenau for the ones who refuse?
Jim
Yes, that's exactly what they are doing.
And they "know" to do that in the same way your fridge magnet "knows" to jump onto the fridge door over the last inch or so :)
And completely correct.
But it's quite a small force.
If you were standing 30km or so away from the base of Mount Everest (357 trillion pounds est) in Pathibhara which looks quite low down, the sideways pull on you (if you have a mass of 100kg) is 0.12grams-force
ie naff all :)
Lucky for us, gravity os the weakest of all the fundamental forces.
If it has a similar strength to electromagnetism (which is a hand wavy thing to say) we'd be probably a black hole.
Look at the sheer size of the Earth and the pathetically tiny force it exerts on your 70-100kgs. Although it seems to get stronger walking up the stairs :)
Did you know a chain or flexible rope fixed between 2 points forms a hyperbolic cosine curve?
It must be. Otherwise where do the Dinosaures live in the Land that Time Forgot?
yes.
Although the Suns pull on the moon exceeds the Earths (apparently).
Bear in mind there's no quantum explanation for gravity.
Also bear in mind there's no reason for Time to remain constant. So speeding up may simply be as a result of Time contracting.
TL;DR : There's more we don't know than do.
There's the wonderful (and should be made compulsory viewing for flat earth types) scene in "Apollo 13", when they have to adjust the trajectory (having the calculations checked *by slide rule*) and Lovell says: "Gentlemen, we just put Isaac Newton in the driving seat".
As an aside, the whole film is a textbook illustration of teamwork. They should screen that for corporate types, rather than dick about in fields for an afternoon.
You're thinking of Burroughs' /At the Earth's Core/ and the subsequent Pellucidar stories. There's layer upon layer of bad physics there: not just the gravity pulling people *up* to the inside of the hollow Earth; there's the sun in the middle held in stable equilibrium and the moon that orbits round it in geostationary orbit casting a permanent shadow - though it's much too close for such an orbit.
yeah. That's why it orbits the sun, not the earth (apparently) innit?
No big deal. Theres no quantum explantion for Sociaslism either.
How could we tell if time was speeding up if it was te smae everywhere?
VVVVVVslight, gravity ius a VVVVVweak force . Almost immeasurable. After all the gravity generated by a body as big as a planet can be overruled by a little magnet on say a paper clip.
And compared to the mass of the planet the mass of a mountain is Bugger all
Eh??
The rope where the flag is will have a slight downward curve but it will be VVVVVV Small ,immeasurably so, compared to the forces exerted by 'the pullers' the force of gravity acting on the flag will be VVVVVVV small.
Nonsense. You need only know one particular conic section and the Greeks nailed that thousands of years before calculus.
Gravity is a myth, the Earth sucks.
;O)
IIRC, Newton proved it originally. I don't think he had any A levels. :)
Is it a force? I thought current thinking was that it was distortion of spacetime.Sure there is lots of information 'out there' about bowling balls on rubber sheets causing dents and these altering the direction of little balls rolled across this sheet.
I agree that unless you are a physicist concerned about these things treating Gravity as a force, in the classical Newtonian sense, works in the real world.
Wiki has:- Gravity is most accurately described by the general theory of relativity (proposed by Albert Einstein in 1915) which describes gravity not as a force, but as a consequence of the curvature of spacetime caused by the uneven distribution of mass.
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