How many dimentions are known, what is there or what exists?

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In summary: So far, all of the theories that assume the existence of extra dimensions have a maximum size for the dimensions. Beyond that, the theories become too complex to be understood.
  • #1
alteredmind
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ok so I have a question, I really don't know in witch subject this belongs but its either physics or astronomy I am guessing. Are all the dimensions in scientific theories just that only? a theory or theories and nothing more like having more then 4 dimensions witch goes up to 11 dimensions in the universe? there is the first dimension, second dimension, 3rd dimension and the 4th dimension is time, correct? what's if that is all there is? doesn't that make things more simple instaid of all the mental complexity?
 
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  • #2
alteredmind said:
Are all the dimensions in scientific theories just that only? a theory or theories and nothing more like having more then 4 dimensions witch goes up to 11 dimensions in the universe?

I'm sorry, I cannot understand what you're trying to ask here.

alteredmind said:
there is the first dimension, second dimension, 3rd dimension and the 4th dimension is time, correct?

That is correct. The 4 dimensions correspond to the 4 numbers required to specify the location of an event or object in spacetime. Three numbers correspond to each spatial dimnension (think of them like the X, Y, and Z axes) and the 4th represents the position in time.

alteredmind said:
whats if that is all there is? doesn't that make things more simple instaid of all the mental complexity?

Theories with more than 4 dimensions might be much more complicated, but they have the potential to better explain our observations about the universe. No theory with more than 4 dimensions is currently considered 'correct'. All theories with more than 4 dimensions are purely theoretical/hypothetical at this time. It may turn out that we don't need more than 4 dimensions to explain the universe, or it may turn out that we do. Only time will tell.
 
  • #3
alteredmind said:
more then 4 dimensions witch goes up to 11 dimensions in the universe?
The explanation which made the most sense to me was that each additional variable is another dimension. It isn't necessarily a dimension in space, like the 3+1 dimensions of space and time, but another dimension in the mathematics required to describe interactions.
 
  • #4
alteredmind said:
Are all the dimensions in scientific theories just that only?

Correct. We don't have proof that extra dimensions exist.

Some theories assume that the extra dimensions are curled up very small. Experiments have been done that attempt to put an upper size limit on the extra dimensions.
 

FAQ: How many dimentions are known, what is there or what exists?

How many dimensions are known?

The most commonly accepted answer among scientists is that there are four known dimensions - length, width, height, and time. These dimensions are used to describe and measure the physical world around us.

Are there any other dimensions besides the four known dimensions?

There are many theories and speculations about the existence of additional dimensions beyond the four known dimensions. Some scientists believe in the existence of extra dimensions, such as the fifth dimension or even up to eleven dimensions, based on mathematical and theoretical models. However, these dimensions have not been observed or proven yet.

What is the difference between dimensions and parallel universes?

Dimensions and parallel universes are two different concepts. Dimensions refer to the physical parameters used to describe the space and time we live in. On the other hand, parallel universes, also known as the multiverse theory, suggest the existence of multiple universes with different physical laws and dimensions. However, there is currently no scientific evidence to support the existence of parallel universes.

Are there any practical applications of understanding dimensions?

Yes, understanding dimensions is crucial in various fields, such as physics, engineering, and computer science. For example, the concept of dimensions is essential in developing theories and models to explain the behavior of matter and energy. It is also used in designing and constructing buildings, bridges, and other structures. In computer science, dimensions are used in programming and designing user interfaces.

Can humans experience dimensions beyond the four known dimensions?

It is not possible for humans to experience dimensions beyond the four known dimensions with our current level of technology and understanding. However, some scientists believe that with advancements in technology and research, we may be able to explore and understand other dimensions in the future.

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