What is the fourth dimension?
- Thread starter Rawker
- Start date
Recommended Videos
4 dimension takes into consideration the time variable (that does not exist in our current dimension, not as real time anyway since our perception of time is defined by the movements of physical objects with density, height and length)
To better understand the concept of a 4th Dimension take a look at the 2nd Dimension, in 2D one can move horizontally, vertically, upwards and downwards but cannot get closer or further from your perspective, should you create a 90º mirror line of every line on a 2D object however you will obtain a 3D object, same rule applies for 3D to 4D and so forth
An example would be the 4D cube, also known as the Tesseract! Now, I cannot show you a Tessaract but I can show you it's shadow, just as I can cast a 3D Cube's shadow, since it's shadow is 3D. Remember, since the Tessaract is a 4D object, it's reflection is 3D and we cannot fully understand it's form.
Here is a Cube
And here is THE REFLECTION of a Tessaract:
The concept of "Time" is now present and treated the same way as "Depth", "Length" and "Width".
To better understand the concept of a 4th Dimension take a look at the 2nd Dimension, in 2D one can move horizontally, vertically, upwards and downwards but cannot get closer or further from your perspective, should you create a 90º mirror line of every line on a 2D object however you will obtain a 3D object, same rule applies for 3D to 4D and so forth
An example would be the 4D cube, also known as the Tesseract! Now, I cannot show you a Tessaract but I can show you it's shadow, just as I can cast a 3D Cube's shadow, since it's shadow is 3D. Remember, since the Tessaract is a 4D object, it's reflection is 3D and we cannot fully understand it's form.
Here is a Cube
And here is THE REFLECTION of a Tessaract:
The concept of "Time" is now present and treated the same way as "Depth", "Length" and "Width".
There is an infinite number of dimensions, since you can continue to add more 90º reflections of an object.tom919 said:
Haha i was watching the video and listening to Coral Twist by Le Knight Club. Matches up perfectlyBoneasse said:
I recently watched some science show where a guy was explaining how there might be dozens of physical dimensions, curled in on themselves and thus making up the three we know of. They used sound and gravity to explain it.
Sound gets weaker the further you are away from the source. Gravity is sort of the same. But while we imagine gravity as being this immense force in the universe, it is actually pretty weak, one of the weakest forces in the universe, and scientists don't really have an explanation for it. For example, if you took a magnet and attached your keychain to it, the small magnet you are holding in your hand would then be pulling on the keys with more force than the entire earth.
So the theory is that the same thing as with sound happens, gravity gets weaker the further away you are from the source, because unlike a wave, it spreads into space, but because there is no explanation for it being so weak as it is, scientists theorize there is more space than we are aware of - multiple dimensions, curled in on themselves - into which gravity spreads.
It might be similar to this youtube video posted by Boneasse, although that is not how they explained it. I think they did mention string theory. In any case, its questions like this that make me want to be a physicist (im not, just FYI, i am a regular mortal) because there are so many questions waiting for answers. Its quite mind boggling.
Sound gets weaker the further you are away from the source. Gravity is sort of the same. But while we imagine gravity as being this immense force in the universe, it is actually pretty weak, one of the weakest forces in the universe, and scientists don't really have an explanation for it. For example, if you took a magnet and attached your keychain to it, the small magnet you are holding in your hand would then be pulling on the keys with more force than the entire earth.
So the theory is that the same thing as with sound happens, gravity gets weaker the further away you are from the source, because unlike a wave, it spreads into space, but because there is no explanation for it being so weak as it is, scientists theorize there is more space than we are aware of - multiple dimensions, curled in on themselves - into which gravity spreads.
It might be similar to this youtube video posted by Boneasse, although that is not how they explained it. I think they did mention string theory. In any case, its questions like this that make me want to be a physicist (im not, just FYI, i am a regular mortal) because there are so many questions waiting for answers. Its quite mind boggling.
I really wonder where this idea that "time" is the 4th dimension comes from... I see a lot of people saying it, but no explanation of why they're saying it.
There doesn't seem to be any logic supporting it. The first three dimensions are of space, why wouldn't the fourth one be another dimension of space? Sure, it's almost impossible to imagine, but to a 2d creature the concept of 3d would be hard to get as well.
There doesn't seem to be any logic supporting it. The first three dimensions are of space, why wouldn't the fourth one be another dimension of space? Sure, it's almost impossible to imagine, but to a 2d creature the concept of 3d would be hard to get as well.
Time is movement of matter through space. Think about it. If nothing at all moved, no day/night cycle, no movement of any kind whatsoever then time wouldn't exist. So yeah, it pretty much is a dimension. But space is also a dimension. Other 4 dimensions exist in space (I don't mean space as out of atmosphere thingy, I mean space as everything that surrounds us).
Same here, although it did not help to clarifiy the fourth deminsion to me at all.sheic99 said:
If anything it just distracted me...