# Relationship between special and general relativity

### Special and General Relativity - The Physics of the Universe According to the theory of special relativity, all laws of physics are the same in all inertial frames (frame of reference that shows movement with. Special Relativity is a special case of General Relativity. Special relativity is an example of General Relativity when the background gravitational field is. You can think of special relativity (SR) as a subcategory of general relativity (GR). In special relativity the speed of light is taken to be constant, and there is no.

What General Relativity does is to generalise the Minkowski metric, equation 2. Suppose we rewrite equation 2 as: Specifically the matrix I've written above is the metric tensor for flat spacetime i.

## What is the difference between special and general relativity?

In General Relativity this matrix can have different values for its entries, and indeed those elements can be functions of position rather than constants. For example the spacetime around a static uncharged black hole has a metric tensor called the Schwarzschild metric: The point I'm getting at is that there is a simple sequence that takes use from everyday Newtonian mechanics to General Relativity. The first equation I wrote down, equation 1 i. Pythagoras' theorem, is also a metric - it's the metric for flat 3D space. Extending it to spacetime, equation 2moves us on to Special Relativity, and extending equation 2 to a more general form for the metric tensor moves us on to general relativity.

To end let's return to that question of the speed of light. Gravity Probe B showed this to be correct. NASA InAlbert Einstein determined that the laws of physics are the same for all non-accelerating observers, and that the speed of light in a vacuum was independent of the motion of all observers. This was the theory of special relativity. It introduced a new framework for all of physics and proposed new concepts of space and time. Einstein then spent 10 years trying to include acceleration in the theory and published his theory of general relativity in In it, he determined that massive objects cause a distortion in space-time, which is felt as gravity.

The tug of gravity Two objects exert a force of attraction on one another known as "gravity.

• Special and General Relativity
• Simple, short responses -- difference between special and general relativity
• Difference Between General Relativity and Special Relativity

The force tugging between two bodies depends on how massive each one is and how far apart the two lie. Even as the center of the Earth is pulling you toward it keeping you firmly lodged on the groundyour center of mass is pulling back at the Earth.

But the more massive body barely feels the tug from you, while with your much smaller mass you find yourself firmly rooted thanks to that same force. Yet Newton's laws assume that gravity is an innate force of an object that can act over a distance. Albert Einsteinin his theory of special relativitydetermined that the laws of physics are the same for all non-accelerating observers, and he showed that the speed of light within a vacuum is the same no matter the speed at which an observer travels.

As a result, he found that space and time were interwoven into a single continuum known as space-time. Events that occur at the same time for one observer could occur at different times for another.

### What is the difference between special and general relativity? | nickchinlund.info

As he worked out the equations for his general theory of relativity, Einstein realized that massive objects caused a distortion in space-time. Imagine setting a large body in the center of a trampoline. The body would press down into the fabric, causing it to dimple. Special relativity details about the scientific laws remaining same irrespective of their location or the direction in which these laws are moving in the absence of gravitation.

It is relatively easy to take care of relativity with respect to space-time coordinate.

### Einstein's Theory of General Relativity: A Simplified Explanation

In the theory of special relativity, only flat space-time is dealt. It describes gravitational force as continuous non-spatial whole of space and time.

The general theory of relativity is considered as more advanced and is widely applicable special theory of relativity. The theory of General Relativity was published in and has been drawn from the theory of special relativity.

The theory of General Relativity was developed by Einstein when he felt that the theory of Special Relativity was insufficient to describe the whole universe.

The difference between the two theories is that the theory of general relativity throws light on the force of gravity with respect to curving four-dimensional space-time. As per Einstein, the accelerative and gravitational forces are equal and same.

As per the theory of general relativity, there is nothing that can travel faster that the rate and speed at which light travels. However, the force of gravity or the gravitational pull between two different objects would be stronger in the advent of the objects being closer to each other. The explanation is that if we move far away or we move closer together, the change in the attraction is expeditious.