# Special teoryof relativity

• DanicaK
In summary, the conversation discussed the concepts of simultaneity and the constant speed of light in relation to Special Relativity. The individual asking the questions also mentioned their confusion with the explanations in their book and asked for recommendations for further resources. The conversation also touched on the idea of relativity and how it affects the measurement of distances and times by different observers.

#### DanicaK

Why events are not simultaneous in every inertial reference frame?

and

Why is the speed of light constant?

Hi DanicaK!

These are elementary rules of Special Relativity.

Which book are you working from?

Which part do you not understand?

tiny-tim said:
Hi DanicaK!

These are elementary rules of Special Relativity.

Which book are you working from?

Which part do you not understand?

I know they are elementary rules in the special theory of relativity. Yes I asked such a stupid question about the speed of light. But in my book from Zambak publication there is not good explenation why are the events not stimultanous in every inertial reference frame.

DanicaK said:
… in my book from Zambak publication …

author? title?

Musa Baş, Halit Cokşun, Murat Baycan :D

Modern physics - title.

oh, is it in Turkish?

there's lots of free online books on relativity …

do a google search for "special relativity", then click on "Books" in the drop-down menu from "more" at the top of the google page

No one knows why the speed of light is a constant...but it seems experiments have confirmed Einstein's theory that is IS constant...and finite...

Try reading here for the relatiovity of simultaneity
http://en.wikipedia.org/wiki/Relativity_of_simultaneity

Things at different points in space, not colocated, are relative because only light is constant, distance and time are RELATIVE, that is, not fixed...so different observers in general do not agree on distances and times...Another way to interpret this is that while Newton saw the distance between Earth and the sun,say, as a fixed observable, relativity concludes that different observers will measure different distances...

## What is the special theory of relativity?

The special theory of relativity is a scientific theory developed by Albert Einstein in 1905. It explains the relationship between space and time and how they are affected by the speed of an object.

## What are the key principles of the special theory of relativity?

The key principles of the special theory of relativity are the principles of relativity and the constancy of the speed of light. The principle of relativity states that the laws of physics are the same for all observers in uniform motion, while the constancy of the speed of light states that the speed of light in a vacuum is the same for all observers regardless of their relative motion.

## How does the special theory of relativity differ from Newton's theory of gravity?

The special theory of relativity differs from Newton's theory of gravity in that it takes into account the effects of high speeds on the laws of physics. Newton's theory of gravity does not consider the effects of special relativity and is only applicable in situations where speeds are significantly lower than the speed of light.

## What is the famous equation associated with the special theory of relativity?

The famous equation associated with the special theory of relativity is E=mc^2, which relates the energy (E) of an object to its mass (m) and the speed of light (c). This equation shows that mass and energy are equivalent and can be converted into each other.

## What are some real-world applications of the special theory of relativity?

The special theory of relativity has many real-world applications, including GPS technology, nuclear power, and particle accelerators. It also plays a crucial role in modern physics and has led to groundbreaking discoveries such as the theory of general relativity and the concept of spacetime.