difference between Einstein general relativity and newtons gravity?!! plz answer?

Question

difference between Einstein general relativity and newtons gravity?!! plz answer?

Answer 1

amansscientiae is correct. It should also be pointed out that relativity makes some predictions about gravity that are different from the Newtonian view, so the two theories can be compared by doing experiments. Relativity predicts that gravity can bend light; in the Newtonian view it can't. (Experiments have shown that Einstein was right.) Relativity accounts for peculiar features in the orbit of Mercury, which can't be explained by Newton's gravity. Relativity predicts that time slows down for clocks that are in a gravitational field (this has been confirmed by comparing the clock rates in orbiting satellites to the clock rates on the ground).

Answer 2

They are both right, within a certain margin of error. Our present state-of-the-art mechanical technology works based on Newton´s laws. Relativiy only kicks in when we deal with cosmic magnitudes.



Even relativity only works within a certain margin. It ASSUMES nothing can go faster than the speed of light, not even gravity. This is a big self-imposed imitation by relativity. The scientific community has not agreed on an experiment to actually measure the true speed of gravity.



There are indications that the speed of gravity is twenty billion times the speed of light (vanFlandern). This would explain "dark matter" and throw the ball back in Newton´s court, which always implied gravity was 'instantaneous'.



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Answer 3

Newtonian gravity is what is scientifically referred to as a law.

Einstein gravity/general relativity is what is scientifically referred to as a theory.





Law does NOT exceed validity over theory.



The distinction of law and theory is:

Law is just a generalization of what reality seems to be.

Theory is an explanation for how reality is the way that it is.



Newton knew how to generalize the quantative nature of gravity, but he didn't know what exactly made gravity work. This is what I call "Newton's embarrassing secret".





Einstein was the one who developed the more details of how it works, at least just a hypothesis (not entirely sure if or if not space-time is curved, because it relies upon definitions of that which are a lot more open to re-define than you think).





Gravity STILL IS a force in Einstein's ideas. It is a misconception that it isn't. Einstein didn't prove Newton wrong...Einstein just ELABORATED on what Newton had to offer.



Gravity STILL IS a *force* because it STILL IS a method by which one object uses in attempt to alter the motion of another object. Force in definition isn't concerned with the cause and messenger of the force...all it is concerned with is one object attempting to alter the motion of another object.



The curvature of space-time is just a mathematical model for what might be the answer to why gravity works...but there are still unanswered questions.

Answer 4

Gravity is the first force to understand scientifically.

The story of Gravity started on the minds of Newton

The fall of apple on Newton, turned the greatest revolutionary in Science ever.

We put the apple falling into curious understanding and finally succeed.

According to Newton Gravity is the Attractive force.

Newton's idea on Gravity is that, bigger object pulls the smaller object nearer

Example: Sun is big compared to Earth and other planets in our solar system that's why all objects influenced by gravitational pull of Sun.

The Gravitational pull on Pluto was very low because, Sun's gravity cannot pull that range of distance

Gravity can reach according to Sun's mass.

The more massive the object, the more gravitational attraction it has.

It is true that all planets are governed by Sun's gravity.

He formulated his famous formula for Gravity (F=m1m2G upon r2 {square}).

F is Force and m1m2 is the two bodies and G is the constant and r2 is the radius of two bodies.

With the Newton's formula of Gravity, we can predict the gravitational force between two bodies.

This story applied to universal objects from 16th century to last 19th century.

But, one young Theoretical Physicist came to into this idea and changed the story totally unknowable.

It was the greatest revolutionary period in earlier 20th century.

He was Albert Einstein took

Einstein realized Newton was wrong on Gravity.

In 1915, the General Theory of Relativity shocked the brilliance of Gravity

Gravity is not same as like the Newton predicted.

Einstein told in space and time gravity behave small the same way like Trampoline

Imagine Space is like a Trampoline

Now put one big rock in Trampoline then, you will observe that rock with set perfectly in centre of Trampoline

It is because, centre of mass is concentrated towards focal point of Trampoline

Now, put one small rock in that same Trampoline, then you will observer that small rock will revolve around the big rock like much the same way does the planets revolve around the sun.

This is what Einstein's Gravity work in Space-Time.

We also put one new forth into Gravity with some different manner.

Einstein thought gravity is working with the Curvature of Space-Time.

What we called as Fabric of Cosmos or Space-Time Continuum.

In Flat approximation of General Relativity mass of an object curves the Space-Time.

The presence of matter in space curves the Fabric of Cosmos and region of curved part forms the gravitational pull according to its mass.

The more massive the object, the more it curves the Space-Time and meanwhile, it has high gravitational pull.

Answer 5

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Answer 6

One kill another.But it simply really bended only (gravity Newton's).

Answer 7

Confused? So are 99% of the scientific community, though most won't admit it.



Newton's law of gravity is still valid except at vast distances and at velocities near the speed of light. His formulas are written in terms of Euclidean space. Einstein's general relativity assumes the validity of Newton's law of gravity for Euclidean space, reformulates it in terms of Minkowski space-time and generalizes it to include vast distances and high velocities.



It is important to understand the difference between Euclidean space and Minkowski space-time. In Euclidean space, gravity bends the path of light, but in Minkowski space-time, the path of light is the definition of a straight line. Straightening the path of light by definition results in the warp of space-time. In the presence of gravity, the internal angles of a triangle don't add up to 180°, and two straight lines may intersect more than once.



In Euclidean space, light has mass which is attracted to all other masses by a gravitational force, thus bending the path of light. Since light is not bent in Minkowski space-time, it has no mass in Minkowski space-time. Redefining "straight line" tacitly changed the definitions of mass, and a bunch of other old familiar parameters. "Force" is not even in the vocabulary of general relativity. The familiar formula f = ma doesn't work at relativistic velocities; it must be replaced by f = δp/δt, which even works for photons in Euclidean space. For particles with a rest mass, δp = mδv + vδm, which is why δp/δt ≠ ma.



Which is right? Both are right within certain limits. General relativity is less limited, but it is a mistake to think it is perfect. It runs into problems at the scales of galaxies and molecules.



Neither Newton nor Einstein answered the question of what causes gravity, though many scientists claim it is caused by the warp of space-time. In fact, it's the other way around.