what is relativity?

Question

just no wikipedia.. explain it in a simple way, please

thanks for helping

Answer 1

if you're riding on the top of a moving train and right when you go past a bridge you throw a ball off the train in a forward direction, lets say at 10 mph, to you it looks like the ball is moving 10 mph, but to someone standing on the bridge (out of the trains way) it would look like the ball was moving much faster, the speed of the train, plus the 10 mph you threw the ball. That difference is, in a nut shell, relativity.

Answer 2

The special theory of relativity is a modern physical theory due to Einstein, giving an account in which neither space nor time has an independent absolute value or existence but is each relative to the other. Thus the classical view of space and time is replaced with one in which the two are aspects of the same underlying reality: Space-time.

Answer 3

Two people contribute $100.00 to a charity.

The first person makes $125.00 a week.
The second person makes $1000.00 a week.

They both gave an equal amount, but the first person gave more if you look at in terms what percentage they gave of their weekly income. Or phrased another way, the first person gave more RELATIVE to their income.

You can compare A and B but when you compare A and B with another factor, C, you might get a totally different answer or perspective.

Answer 4

I assume you means Einstein's relativity theory.
The theory is based on two postulates.
1- speed of light is constant
2-no matter what location of space physical laws keep the same form.
On these two postulates hangs the whole theory of relativity.
Special relativity uses lorenz transformation.The results of the modified transformation yield the folowing;
Time dilation formula=means time is relative
Relativist mass increase with velocity=means mass is relative
Lenght contracion in direction of motion=means distance is relative
Relativistic acceleration =means acceleration is relative

The whole world is relative

Relativistic law of motion

Non relativistic forces are fictitious


Gravity is caused by the presence of mass

The presence of mass causes the curvature of space . and time accordingly as well.

Thus a disturbance of spacetime curvature cause a gravity wave.

Light responds to gravity .

The Theory was meant for macromasses and did not agree with quantum mechanics which delt with micromasses.

According to relativity theory Newtons laws of motion are inaccurate.,only relativity is on the button.


This was the whole sumation of the theory of relativity I made while standing on one leg.

Answer 5

Here you go:

-- As something's speed increases, it's relative time slows down.

-- If two bodies are moving uniformly to one another, it is impossible to tell which one is moving and which one is still. For example, from earth, it appears that other galaxies are moving away from us at considerable speed. From the other galaxies, it would appear that we are moving away from them. Yet for us, it appears that we aren't moving at all.

-- Nothing can go faster than the speed of light (186,000 miles per second).

One famous example is called the Twin Paradox. One twin stays on earth. The other goes off into space at the speed of light. In earth time, he's gone for 20 years. When he returns, his brother has aged 20 years, but he hasn't aged at all.

Of course, our technology hasn't advanced to the point where we can make anything travel at even a significant fraction of the speed of light.

Answer 6

relativity is the universe, gravity, matter and everything else in the universe, basically it talks about motion, acceleration etc.
if you are talking about observation and perspective, relativity talks about the general stuff and how its possibility in life is high

unlike quantum mechanics, it doesnt deal with particles and string theory deals with unlikely possibilities

do some research and you'll find more

Answer 7

you're doing sth you don't want to, 1 hour is like a day..
you're hanging out with an attractive girl, 1 day is like an hour..
that's relativity!

Answer 8

they are like my auntie and uncle