# Einsteinian Time vs Newtonian Time

• seeldoger47
In summary, the conversation discusses an English major writing a paper on the relationship between our perception of progress and linear time. To support the argument, they plan on citing Newtonian physics and Einstein's theory of relativity. They ask for an explanation or reading material on the difference between the two interpretations of time. The only significant difference mentioned is the coupling of time and space in Einstein's theory. Recommended reading material includes "A Brief History of Time" by Stephen W. Hawking and "Relativity: The Special and General Theory" by Albert Einstein.
seeldoger47
Hello everyone, I'm and English major and am writing a paper that argues our notion of progress stems from our linear perception of time. In order to make my argument I plan on citing Newtonian physics interpretation of time and then contrasting that with Einstein's interpretation of time. So can someone please explain (or point me in the direction of reading material that explains) the difference between the Einsteinian and Newtonian time?

Welcome to PF;
The only important difference is the coupling of time and space.
That would be theory of relativity.

A Brief History of Time from the Big Bang to Black holes by Stephen W. Hawking

and

Relativity
The Special and General Theory by Albert Einstein

(you can skip Maths)

ehild

## 1. How does Einsteinian time differ from Newtonian time?

Einsteinian time, also known as relativistic time, is based on the theory of relativity and states that time is relative to the observer's frame of reference. This means that time can be perceived differently by different observers depending on their relative speeds and gravitational fields. On the other hand, Newtonian time is absolute and does not account for the effects of speed and gravity on time.

## 2. What is time dilation in Einsteinian time?

Time dilation is a phenomenon predicted by Einstein's theory of relativity where time appears to pass more slowly for objects that are moving at high speeds or in strong gravitational fields. This means that time is not a constant and can be stretched or dilated depending on the observer's frame of reference.

## 3. How does Einsteinian time affect the concept of simultaneity?

In Newtonian time, two events that occur at the same time for one observer will also occur at the same time for all other observers. However, in Einsteinian time, the concept of simultaneity is relative and can be different for different observers. This means that events that appear to happen simultaneously for one observer may not appear simultaneous for another observer who is moving at a different speed or in a different gravitational field.

## 4. Can time travel be possible with Einsteinian time?

According to Einstein's theory of relativity, time travel may be possible in certain circumstances. Time dilation, where time can be stretched or dilated, could allow for travel into the future. However, traveling into the past is still a subject of debate and has not been proven to be possible.

## 5. How has Einstein's theory of relativity changed our understanding of time?

Einstein's theory of relativity revolutionized our understanding of time by showing that it is not absolute, but rather relative to an observer's frame of reference. This has led to a better understanding of the effects of speed and gravity on time and has also paved the way for advancements in technology, such as GPS systems, that rely on the accurate measurement of time.

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