What is the fourth variable in the 4th dimension?

In summary, the conversation discusses the concept of 4D and its relation to spacetime. The theory behind this is Special Relativity, which deals with time-dilation and space time. One application of this theory is seen in the GPS system, as the calculations for coordinates must take into account time dilation caused by relative speed between Earth and satellites. This theory is not difficult to understand once one grasps the contrast between "relative" and "absolute" terms.
  • #1
Luongo
120
0
is it time? what's your theory on the study of other dimensions? and applications from them?
 
Physics news on Phys.org
  • #2
Almost without exception, when people talk about a 4D they mean spacetime, which has coordinates (t,x,y,z) for example. So yes, time would be the extra coordinate.
 
  • #3
Luongo said:
is it time? what's your theory on the study of other dimensions? and applications from them?

If I've interpreted your question correctly, the theory would probably be Special Relativity that deals with time-dilation and space time.

For applications, the GPS which makes use of satellites will need to use Eintein's equation in order for it to work accurately. (relative speed between a point on surface of Earth and satellite's speed will cause time dilation which affects calculation of the coordinates)

Read up on the theory, very interesting and not that hard once you see the contrast between the terms "relative" and "absolute".

Sorry if I've misinterpretted your question haha =D
 

Related to What is the fourth variable in the 4th dimension?

1. What is the fourth dimension?

The fourth dimension is a theoretical concept in physics and mathematics that refers to a dimension beyond the three dimensions of length, width, and height. It is often represented as time, but it can also represent other physical quantities such as temperature or pressure.

2. How is the fourth dimension different from the other dimensions?

The fourth dimension is different from the other dimensions because it is not directly observable or measurable in our everyday experience. While we can see and interact with objects in the first three dimensions, the fourth dimension is a theoretical concept that helps us understand the behavior of physical systems.

3. What is the significance of the fourth dimension in science?

The fourth dimension is significant in science because it allows us to better understand complex systems and phenomena. It is particularly useful in fields such as physics, where it helps explain concepts like space-time and the behavior of particles. It also has applications in other fields such as mathematics, computer science, and philosophy.

4. Is time the only fourth dimension?

No, time is not the only fourth dimension. While it is commonly used to represent the fourth dimension, other physical quantities such as temperature, pressure, and electromagnetic fields can also be considered as the fourth dimension in certain contexts.

5. Can we experience the fourth dimension?

No, we cannot experience the fourth dimension in the same way we experience the first three dimensions. Our perception and understanding of the world are limited to three dimensions, so we can only conceptualize the fourth dimension through mathematical and scientific models and theories.

Similar threads

B Help with personal thoughts and observations in attempt to understand the fourth dimension better
    • Other Physics Topics
Replies
3
Views
738
B Is imaginary time a fourth dimension?
    • Special and General Relativity
Replies
13
Views
699
B The Fourth Dimension: A Measurement of Aging
    • Other Physics Topics
Replies
20
Views
3K
B Universe Moving in Circles? Exploring 4th Dimension
    • Other Physics Topics
Replies
2
Views
3K
I General definition of spatial dimension?
    • Other Physics Topics
Replies
11
Views
3K
I Determining the dimension of a given PDE
    • Differential Equations
Replies
9
Views
316
B Exploring Extra Dimensions: Time, 2D & 3D Space
    • Other Physics Topics
Replies
12
Views
19K
I What is the velocity of a photon through the four dimensions?
    • Special and General Relativity
Replies
9
Views
1K
I What is time in string/M-theory and Four-dimensionalism?
    • Other Physics Topics
Replies
1
Views
2K
Interacting with the fourth dimension?
    • General Discussion
Replies
2
Views
703

Hot Threads

Recent Insights

Back
Top