http://fourd.ytmnd.com/
I tried imagining holding one in my hand and my brain melted.
Seriously - what the hell!?
http://fourd.ytmnd.com/
I tried imagining holding one in my hand and my brain melted.
Seriously - what the hell!?
4D objects projected on a 2D plane ? Bound to get weird...
Yes, Iraq is peaceful. Go to sleep now. - Adrian II
http://universe3d.ytmnd.com/
4D objects had one weakness...
I've seen the 4D shape one before!
What is the first dimension? A single line going to infinity in both directions, how do you split it in half? A single point.
What is the second dimension? A plane streaching to infinity in all directions. How do you split it in half? A single line (1D object).
What is the third dimension? A cube streaching to infinity in all directions.
How do you split it in half? A plane (2D object).
So what is the fourth dimension? Something that could be split in half by an infinitley large three dimensional object.
Sometimes I slumber on a bed of roses
Sometimes I crash in the weeds
One day a bowl full of cherries
One night I'm suckin' on lemons and spittin' out the seeds
-Roger Clyne and the Peacemakers, Lemons
Well, theoretically point masses should exist in fewer than 2 dimensions. But they're not really observable at present, if they exist.
Ajax
"I do not yet know how chivalry will fare in these calamitous times of ours." --- Don Quixote
"I have no words, my voice is in my sword." --- Shakespeare
"I can picture in my mind a world without war, a world without hate. And I can picture us attacking that world, because they'd never expect it." --- Jack Handey
Anybody here ever read Flatland?
Brilliant little book!
Unto each good man a good dog
Actually there's no problem holding that object. It will simply look like a cube. Where it get's weird is if the object moves through the fourth dimension, as it will suddenly disappear when the cube no longer has a volume in our 3-dimentional space.Originally Posted by currywurry
A ball is even weirder as it will look llike a regular ball that'll continue to grow/shrink as it passes through our space.
Atleast that's my understanding comparing 2-D with 3-D and applying the changes into 4-D.
We are all aware that the senses can be deceived, the eyes fooled. But how can we be sure our senses are not being deceived at any particular time, or even all the time? Might I just be a brain in a tank somewhere, tricked all my life into believing in the events of this world by some insane computer? And does my life gain or lose meaning based on my reaction to such solipsism?
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Activity Recorded M.Y. 2302.22467
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The 4th dimension is time.
That object at the end only had 3 spatial dimensions.
Last edited by The_Doctor; 09-11-2006 at 18:36.
At first, I thought 'what a sham, they just stretched a cube to make it seem to go into a new dimension, it's still actually just 3-d.' Then I realized, 'no it's actually still just 2 dimensional, as the third is an optical illusion, or perhaps symbolism of depth.' In that sense, stretching the cube of course doesn't make it an actual 4 dimensional object, but with the 4th dimension being time it makes as much sense to let that final stretching represent motion in time as it does to to let the previous one represent motion into a 3-dimensional space.
Hmm, hope that made sense.
Ajax
edit: In fact, imagining holding a 4-d object in your hand shouldn't be a problem, as technically everything you've ever held in your hand has been 4-dimensional (or more if you're into string theory, but I'm not going there). A pencil not only has 3 spatial dimensions, but exists as time changes as well.
Last edited by ajaxfetish; 09-11-2006 at 17:46.
"I do not yet know how chivalry will fare in these calamitous times of ours." --- Don Quixote
"I have no words, my voice is in my sword." --- Shakespeare
"I can picture in my mind a world without war, a world without hate. And I can picture us attacking that world, because they'd never expect it." --- Jack Handey
I understand what your saying.At first, I thought 'what a sham, they just stretched a cube to make it seem to go into a new dimension, it's still actually just 3-d.' Then I realized, 'no it's actually still just 2 dimensional, as the third is an optical illusion, or perhaps symbolism of depth.' In that sense, stretching the cube of course doesn't make it an actual 4 dimensional object, but with the 4th dimension being time it makes as much sense to let that final stretching represent motion in time as it does to to let the previous one represent motion into a 3-dimensional space.
If you think about it, its on a monitor, so it only has length and hight plus time, so it is only has 3 dimensions.
That would be fun, until it kills half of the Org.or more if you're into string theory, but I'm not going there
Last edited by The_Doctor; 09-11-2006 at 18:41.
I remember watching something that said the 4th dimention is time, lol. Probably some bad sci-fi though and not anything real.
That's if you'd put a 3D object in a 2D world 4D is different. I've found animations about this a long long time ago (I think a year or two) in which showed the 4D equivalent of the 3D cube. It's intresting but verry hard for me to really underdstand it and stuff. Try google, you'll find something.Originally Posted by Ironside
Also there's that book about 10 dimensions (with time as the 11th) tough I think it's bullocks really. (also has a website with animations)
Stretched in the 4th spatial dimension.
Bah, all this talk of 3 and 4 dimensions is codstwaddle. Everyone knows there is only 2.
It was not theirs to reason why,
It was not theirs to make reply,
It was theirs but to do or die.
-The Charge of the Light Brigade - Alfred, Lord Tennyson
"Wherever this stone shall lie, the King of the Scots shall rule"
-Prophecy of the Stone of Destiny
"For God, For King and country, For loved ones home and Empire, For the sacred cause of justice, and The freedom of the world, They buried him among the kings because he, Had done good toward God and toward his house."
-Inscription on the Tomb of the Unknown Warrior
Time is the 4th dimension.I remember watching something that said the 4th dimention is time, lol. Probably some bad sci-fi though and not anything real.
time doesnt exist :)
Err... not really. The other three dimensions are measurements of space, so why would the 4th one be time? No credible argument can back up the claim, but hey, you aren't even providing any kind of an argument at all anyway!Originally Posted by The_Doctor
...is this the frontroom? Oh...
THE GODFATHER, PART 2
The Thread
i think the bottle is more entertaining then the 4D
"It is not so much that we need to be taken out of exile. It is that the exile must be taken out of us."- Lubavitcher Rebbe
"Its a great mitzva to be happy always" Rebbe Nachman of Breslov
We want moshiach now!!
Have you seen those weird mugs? Now THEY are confusing.Originally Posted by Bar Kochba
THE GODFATHER, PART 2
The Thread
Time is a property of a universe just like space is one. Both properties have their dimensions. In theory both can have an unlimited number of dimensions, time for example has as far as I know ulimited dimensions. "time doesn't exist." The times, one single time that is the same for anywho anywhere doesn't exist. Time is relative remember that experiment with clocks in a moving train? (or how was it again?) Anyway the amount of space dimensions in our univers is unkown at the moment. Scientist already claim to have discover some with experiments (Zwitserland?) and not so long ago a book and it's site is claimng there'll be 10 dimensions (more based on philosophy then science?) and claims that time is the 11th dimension.Originally Posted by The_Doctor
I think that is string thoery.10 dimensions (more based on philosophy then science?) and claims that time is the 11th dimension.
Last edited by The_Doctor; 09-11-2006 at 21:09.
The concept of space-time is valid but I think that it is simply changing the definition of dimension. In this context, a dimension is the measurement of the axes of space.
http://dictionary.reference.com/sear...sion&x=56&y=15
So while time and space do go hand in hand, I think the association between time and the other three dimensions does not bear enough of a connection for time itself to be called a dimension.
THE GODFATHER, PART 2
The Thread
That's why I never called that object not 4-D as I've got no idea how that illusion would look like. I know it got the basics right. Extending a 3-D cube gives another cube as extra corners so to say. Every time the dimension increases, the edges dubbles in number and an equal strukture forms into the new dimension, like in thier demonstration.Originally Posted by ajaxfetish
And it's 3 room-dimensions and 1 time-dimension, they're separated you know. Wonders if time is actually only a 0,5 dimension, as so far only forward is known.
Now, make a graphical demonstration of how a particle moves through a 3-D space with time and displaying all the particle positions at the same time. You'll get a "snake" through space but how to represent time? (this is possible by "cheating" ) .
Now try to image 2-dimensional time , or better a 10-dimensional space with complex numbers, with 4-dimensional space, making a graphical representation having 24-dimensions
The funny part is that you can calculate on it.
And the formula for a 4-dimensional sphare is 16*pi*r^4/9 and it's volume is 64*pi*r^3/9 and I can prove this
Sadly this won't help displaying a 4-D sphare in 3-D, like the drawing of a cube.
We are all aware that the senses can be deceived, the eyes fooled. But how can we be sure our senses are not being deceived at any particular time, or even all the time? Might I just be a brain in a tank somewhere, tricked all my life into believing in the events of this world by some insane computer? And does my life gain or lose meaning based on my reaction to such solipsism?
Project PYRRHO, Specimen 46, Vat 7
Activity Recorded M.Y. 2302.22467
TERMINATION OF SPECIMEN ADVISED
I see what your getting at, but time is used to measure things (eg, graphs) like the other dimensions.The concept of space-time is valid but I think that it is simply changing the definition of dimension. In this context, a dimension is the measurement of the axes of space.
http://dictionary.reference.com/sear...sion&x=56&y=15
So while time and space do go hand in hand, I think the association between time and the other three dimensions does not bear enough of a connection for time itself to be called a dimension.
Couldn't you just label each particle with a time? I have a feeling this is cheating.Now, make a graphical demonstration of how a particle moves through a 3-D space with time and displaying all the particle positions at the same time. You'll get a "snake" through space but how to represent time? (this is possible by "cheating" ) .
Last edited by The_Doctor; 09-11-2006 at 22:28.
Wouldn't a 4-D shape shift with time?
"Half of your brain is that of a ten year old and the other half is that of a ten year old that chainsmokes and drinks his liver dead!" --Hagop Beegan
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