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Description
The Fourth Dimension: Toward a Geometry of Higher RealityThis is the definitive popular exploration of what the fourth dimension means, both physically and spiritually. Mathematician and science fiction novelist Rudy Rucker takes readers on a guided tour of a higher reality that explores what the fourth dimension is and what it has meant to generations of thinkers. The exciting and challenging journey is enhanced by more than 200 illustrations and a host of puzzles and problems (with answers). "This is an
This is the definitive popular exploration of what the fourth dimension means, both physically and spiritually. Mathematician and science-fiction novelist Rudy Rucker takes readers on a guided tour of a higher reality that explores what the fourth dimension is and what it has meant to generations of thinkers. The exciting and challenging journey is enhanced by more than 200 illustrations and a host of puzzles and problems (with answers)."This is an invigorating book, a short but spirited slalom for the mind." -- Timothy Ferris, The New York Times Book Review
"Highly readable. One is reminded of the breadth and depth of Hofstadter's G del, Escher, Bach." -- Science
"Anyone with even a minimal interest in mathematics and fantasy will find The Fourth Dimension informative and mind-dazzling... Rucker] plunges into spaces above three with a zest and energy that is breathtaking." -- Martin Gardner
"Those who think the fourth dimension is nothing but time should be encouraged to read The Fourth Dimension, along with anyone else who feels like opening the hinges of his mind and letting in a bit of fresh air." -- John Sladek, Washington Post Book World
"A mine of mathematical insights and a thoroughly satisfying read." -- Paul Davies, Nature Magazine
Binding Type: Paperback
Publisher: Dover Publications
Published: 09/17/2014
ISBN: 9780486779782
Pages: 240
Weight: 0.65lbs
Size: 8.90h x 5.90w x 0.60d
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Product Reviews
★★★★★ 5
Great functional printer
Color: Black, Style: ET-2800-B, Pattern Name: Printer
This is a great basic printer for my office. We have a higher model in our main floor office but it is older. The setup is fast and easy and it prints well. I set it up right from my phone. The picture quality is great and it prints quickly. It is so convenient and was the right price for what I need.
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Reviewed in the United States on May 10, 2026
★★★★★ 5
So far so good.
Color: Space Gray, Memory Storage Capacity: 32 GB, Size: Wi-Fi, Color: Space Gray, Memory Storage Capacity: 32 GB, Size: Wi-Fi
Seems to be working perfectly. Battery is a little meh, small scratches but nothing that effected the screen.It'll be perfect for my child. It'd be in excellent condition if the battery were better. Worth the 100 bucks.
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Reviewed in the United States on May 30, 2026
★★★★★ 5
Like New Condition
Color: Space Gray, Memory Storage Capacity: 32 GB, Size: Wi-Fi
Came in perfect condition. Works as expected. No visual wear. Battery life seems good. Overall a good purchase for a simple iPad.
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Reviewed in the United States on May 30, 2026
★★★★★ 5
Great tablet
Color: Silver, Memory Storage Capacity: 128 GB, Size: Wi-Fi, Color: Silver, Memory Storage Capacity: 128 GB, Size: Wi-Fi
Honestly I’m actually surprised on how good it works, I was worried that it wasn’t gonna work properly since it’s refurbished but it’s great! It doesn’t lag, the battery lasts long, it’s in great condition. It did have some scratching on the back of the tablet but in my opinion it’s no biggie, with the case it covers it.
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Reviewed in the United States on April 24, 2026
★★★★★ 4
Solid Product
Color: Space Gray, Memory Storage Capacity: 32 GB, Size: Wi-Fi
Product is working very well. Only downfall is charging is a bit slow but, that could be related to the charge cord that came with it and not the device itselft.
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Reviewed in the United States on April 28, 2026