- Is time really a dimension?
- Can a time machine be invented?
- What would happen if Time didn’t exist?
- Why is time the fourth dimension?
- Can gravity exist without mass?
- What are the 4 dimensions of the universe?
- Does time exist without space?
- Can space and time be separated?
- Can time space and matter exist independently?
- Does the past still exist?
- How long is 1 hour in space?
- Can you have matter without space?
- Is time an illusion Einstein?
- Is it possible to travel back in time?
- What came first time or space?
- What is the 7th dimension?
- Are time and space the same thing?
- How many dimensions do we live in?

## Is time really a dimension?

Time is just as good a dimension as space is, as no matter how you boost yourself through space, you must always move forward through time.

…

If time weren’t a dimension with the exact properties it possesses, special relativity would be invalid, and we could not construct spacetime to describe our Universe..

## Can a time machine be invented?

Time travel may soon be possible, according to an astrophysicist who believes he’s worked out a way to build a time machine. Professor Ron Mallett from the University of Connecticut in the US claims to have written a scientific equation that could be used to create a device that takes people back in time.

## What would happen if Time didn’t exist?

If time had not existed at all, nothing could have started, nothing could have progressed from the instant of the big bang, so no stars would have condensed out of the soup of primitive particles, no planets would have formed around the stars and no life would have evolved on the planets and so no you or me or this …

## Why is time the fourth dimension?

Moving through space necessitates you to move through time as well. Hence, they argue that time is the 4th dimension since without it, we cannot construct any meaningful position vector with an unchanging length. Time’s dimension is a line going from the past to present to future.

## Can gravity exist without mass?

The only way to get gravity is with mass. The more mass, the more gravity you get. Without mass, you can’t have gravity. … The force of gravity that we feel is actually just an acceleration towards the center of the Earth at 9.8 meters per second squared, or 1G.

## What are the 4 dimensions of the universe?

Our Universe as we know it has four dimensions: the three dimensions of space (up and down, left and right, back and forth), and one dimension of time that keeps us all ticking along.

## Does time exist without space?

Time cannot exist without space and vice versa. The answer is extremely complicated but essentially time and space are inseparable. Something cannot move through space without also moving through time, as it takes time to go anywhere.

## Can space and time be separated?

Time relates to motion of matter within space. Take away the matter, and there are no properties for time to measure, or time relative to the matter… … It is a non-physical quantity therefore cannot be separated from space.

## Can time space and matter exist independently?

Can space exist by itself without matter or energy around? No. … General relativity tells us that what we call space is just another feature of the gravitational field of the universe, so space and space-time can and do not exist apart from the matter and energy that creates the gravitational field.

## Does the past still exist?

The past and future do not exist and are only concepts used to describe the real, isolated, and changing present. This conventional model presents a number of difficult philosophical problems, and seems difficult to reconcile with currently accepted scientific theories such as the theory of relativity.

## How long is 1 hour in space?

7 years1 hour in space is 7 years on earth.

## Can you have matter without space?

Originally Answered: can matter exist without space? … Space is the gap between matter, so without space, all matter is in one place. But matter has energy, so will move. Without space it cannot move, so it cannot have energy.

## Is time an illusion Einstein?

While most people think of time as a constant, physicist Albert Einstein showed that time is an illusion; it is relative — it can vary for different observers depending on your speed through space.

## Is it possible to travel back in time?

While the debate continues over whether travelling into the past is possible, physicists have determined that travelling to the future most certainly is. And you don’t need a wormhole or a DeLorean to do it. Real-life time travel occurs through time dilation, a property of Einstein’s special relativity.

## What came first time or space?

According to Albert Einstein, space and time are simply different aspects of the same entity now called ‘spacetime’. It therefore seems plausible that they came into existence simultaneously.

## What is the 7th dimension?

In the seventh dimension, you have access to the possible worlds that start with different initial conditions. … The eighth dimension again gives us a plane of such possible universe histories, each of which begins with different initial conditions and branches out infinitely (hence why they are called infinities).

## Are time and space the same thing?

Thus, space and time are effectively interchangeable, and fundamentally the same thing (or at least two different sides of the same coin), an effect which becomes much more noticeable at relativistic speeds approaching the speed of light.

## How many dimensions do we live in?

In everyday life, we inhabit a space of three dimensions – a vast ‘cupboard’ with height, width and depth, well known for centuries. Less obviously, we can consider time as an additional, fourth dimension, as Einstein famously revealed.