6 ms·
Visualizing the Fourth Dimension Using Color
- leif 17y agoI always preferred the blunt "pull this part back to yesterday, when the knot wasn't, move it over here, bring it back to today, and it's unknotted" argument.
- rms 17y agoThat's treating the 4th dimension as time, which is fine, but this article is referring specifically to the 4th spatial dimension. Sometimes pop physics type articles confusingly refer to the 4th spatial dimension as the 5th dimension.
- kschults 17y agoWhat exactly is the 4th spacial dimension? Since we only experience space in three dimensions, how can we assign meaning to a fourth dimension in space?
- secret 17y agoThese may help visualize 4D space: http://en.wikipedia.org/wiki/Fourth_dimension http://en.wikipedia.org/wiki/Fourth_dimension http://www.instructables.com/id/How_to_draw_a_4_dimension_cube/ http://www.instructables.com/id/How_to_draw_a_4_dimension_cu...
- rms 17y agoThe classic Flatland also helps. http://www.geom.uiuc.edu/~banchoff/Flatland/ http://www.geom.uiuc.edu/~banchoff/Flatland/
- anigbrowl 17y agohttp://www.superliminal.com/cube/cube.htm http://www.superliminal.com/cube/cube.htm
- anigbrowl 17y agoOne might just as easily say that it's treating time as a 4th spatial dimension (offering a further 2 degrees of freedom, when our actual experience of time seems to be sadly one way, unless you read pravda). What he's suggesting is not substantively different from the color analogy.
- dryicerx 17y agoActually you can further extend color. Color it self is on a 3 dimensional space (RGB). Now you have 6 dimensions to play with. Although in practice I found that doing Brightness and (Red/Blue) is a good way. If you are doing points on a multi dimensional space, you can start using various shapes (Length, Width, Height) or Number of faces. Alternatively you can also do stars with spikes coming out (more spikes per higher value), I find this the easiest to visualize rather than shape sizes.
- TweedHeads 17y agoThere are only three spatial dimensions, and time. If you are going to play tricks using color, you may as well use flavors and odors for a sixth dimension visualization (and any other property you may think of for further extending dimensions). I call bullshit.
- raganwald 17y agoPlease forgive my simplistic questions, I do not have any higher education in physics and in my reading of pop science magazines I doubtless remain ignorant of important developments. What is the proof that there are only three spatial dimensions? You say "three spatial dimensions and time." Is time a dimension just like the spatial ones but we perceive it differently? Or is time something other than a dimension? And when was this proved or demonstrated?
- glymor 17y agoYou can't prove there aren't more dimensions. After all you could be hiding them in your garage with your invisible dragon or you could of rolled them up in a Calabi-Yau manifold. Time is a unidirectional so it's considered to be a different kind of dimension than the spacial (bidirectional) dimensions.
- gchpaco 17y ago.. Although depending on the particle theory you subscribe to, it may only be unidirectional to us (positrons being electrons moving backwards in time, etc.)
- glymor 17y agoIt's important to realize that this is mathematics not physics. This might give you an idea of what they can be used for: http://en.wikipedia.org/wiki/Level_set_method http://en.wikipedia.org/wiki/Level_set_method