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How to Imagine a 4 Dimensional Object in Our 3d World

This video clip was taken from the 1980 award winning series Cosmos. It cleverly shows you the shadow caused by a 4 dimensional shape. The presenter Carl Sagan, the famous astrophysicist and astronomer, also explains how our 3 dimensional objects would appear to ‘flatland’ – an imaginary 2 dimensional world..

Thought provoking stuff from the late, great Carl (…more videos from him coming soon)

4 dimensional animation …very weird!

The tesseract is the 4-dimensional analog of a 3-dimensional cube. When it is rotated around a 4D axis and projected from 4D to 3D, it creates an interesting animation of a shape-changing 8-cell in 3D while it’s shape doesn’t actually change in 4D.

In mathematics, the fourth dimension is treated like the first three dimensions but the human mind has difficulties trying to come to grips with shapes in four spatial dimensions.

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How to Imagine a 4 Dimensional Object in Our 3d World, 9.1 out of 10 based on 36 ratings
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20 Responses to “How to Imagine a 4 Dimensional Object in Our 3d World”

  1. James says:

    I wasn’t able to view the video

    I would very much like to see it

    Thanks
    James

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  2. Seth Shoenfi says:

    Very interesting and facinating!

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  3. AdminCyndi says:

    Hi James

    Sorry you are having trouble with the video.
    It can also be found on youtube here http://www.youtube.com/watch?v=HCIP_G35ViQ

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  4. header says:

    They talked about this in “What the Bleep…” Very cool! Certainly gives a new perspective on reality.

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  5. Leila says:

    Carl Sagan makes it all seem easy to understand but I don’t think I get the analog bit.

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  6. Suvin says:

    Carl Sagan explains it really well…but the last part of the video was kinda way to weird!!!

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  7. Vic says:

    very interesting…….can smbody explain how to pursue the 4th dimension?

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  8. prakash says:

    i could not see pictures.

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  9. Kenaz says:

    Few years back SciFi Chanel had produced a trilogy dealing with detentions in a rather brutal fashion. Even tho a bit violent at times the three movies did a great job of placing people within the quantum realities. an yes Sagan does a fine job of oversimplifying these states

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  10. angel says:

    Thank you, Cyndi, for that very cool video by Carl Sagan. More science videos would be very welcome.

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  11. Len says:

    10 out of 10. Cool

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  12. janet says:

    Great stuff, It’s hard to imagine how this could have been demonstrated without the use o 3d lasers, in the future soon i’m sure something more palatable to the unitiated will be available & understood by all.

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  13. [...] at Viewing the 4th Dimension… In a previous post we offered Carl Sagan’s take on the 4th Dimension, a video first shown in [...]

  14. mercerd says:

    interesting material, where such topics do you find? I will often go

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  15. [...] been about seven months since we first offered Carl Sagan’s  view of the 4th dimension (how to imagine a 4-d object in our 3-d world) with the promise of more videos coming [...]

  16. Ashwin says:

    Cool one! Carl Sagan explains it beautifully.

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  17. Tom says:

    These dimensions are all based on visual phenomena and the assumption that we can see. What about blindness, deafness.

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  18. For those truly interested in a more in depth and scholarly treatment of the 4th dimension (no disrespect to Carl intended) the book “Flatland” by Edwin Abbott (mentioned by Sagan) is an excellent start. Also the works of Claude Bragdon “Fourth Dimensional Vistas” and “The Fourth Dimension – A primer for Higher Space” will explain many of the puzzles with excellent illustrations. Also the works of Russian mathematician P. D. Ouspensky “The Fourth Dimension” and “The Tertium Organum (a new instrument of knowledge)” will wrap it up nicely.

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  19. This is fascinating. To see those videos I got an idea about it, but still very difficult to imagine.. And then there are more than 4 dimensions.

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  20. Perhaps we have to travel inwards…..

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