SKU: 28135990914

The Substance of Spacetime: Infinity, Nothingness, and the Nature of Matter

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Description

The Substance of Spacetime: Infinity, Nothingness, and the Nature of MatterDoes Spacetime Exist? If spacetime does not exist, it certainly does so in a curiously conspicuous way, not at all like other geometric abstractions. Consider this mindbender: spacetime does not exist at all, but it doesn't exist in the void even more than it doesn't exist in the universe. Is that the description of something that does not exist? Relativity theory treats spacetime as a mathematical abstraction a four dimensional coordinate system

Does Spacetime Exist?
If spacetime does not exist, it certainly does so in a curiously conspicuous way, not at all like other geometric abstractions. Consider this mindbender: spacetime does not exist at all, but it doesn't exist in the void even more than it doesn't exist in the universe. Is that the description of something that does not exist?

Relativity theory treats spacetime as a mathematical abstraction-a four-dimensional coordinate system analogous to the three dimensions of Cartesian geometry. It does not exist, per se. It is not a "thing" in any tangible sense. It merely serves as the background needed to describe the behaviors of the "real" things that exist within it. It is no more than the stage on which the cosmic drama plays out. That's the theory.

What if spacetime exists after all? Are we not obliged to take this stuff seriously and start asking questions? What are its properties? Where did it come from? Is spacetime a simple or a composite thing? Can it be broken into simpler parts? If not, are we compelled to wonder if spacetime is actually the fundamental substance of the universe? And how does this remarkable stuff come together to form the physical world around us?

The Substance of Spacetime sets out to investigate these very mysteries and the results are truly exciting. Treating spacetime, not merely as a coordinate system, but as a real physical substance, opens a window onto reality that would otherwise be impossible to even contemplate.

If spacetime exists, everything changes.



Binding Type: Paperback
Publisher: Gadfly LLC
Published: 03/31/2016
ISBN: 9780980208849
Pages: 346
Weight: 0.97lbs
Size: 8.50h x 5.50w x 0.77d
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SKU: 28135990914

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Mr. Young
Belleville, US
★★★★★ 4
Beats Name Brands Jeans 👖
Size: 14, Color: Washed Blue
These pants are good for $12.78 you can’t beat that only thing is the legs are a bit too long. Good quality jeans beats name Brand jeans that’s why I gave 4 stars not five stars she will grow in to them.
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Reviewed in the United States on June 11, 2026
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Veronica
San Leandro, US
★★★★★ 5
Happy customer
Size: 14 Slim, Color: Washed Blue
My girl absolutely loves the jeans!!!! I sized up for her just incase and I’m glad I did because they fit her perfectly!!!!!!!! I sized up for her height! Perfect length!!!! Great quality!!!! Great price!!!! Jeans look just like they are pictured online!
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Reviewed in the United States on December 19, 2025
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Felicia
Birmingham, US
★★★★★ 5
Cute jeans
Size: 12, Color: Washed Blue, Size: 12, Color: Washed Blue
Bought these jeans for my daughter and they fit great! The material is thick, which is nice even in warm weather. They look just like the photo and have a great length to them. Very comfortable and stretchy . She loves them!
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Reviewed in the United States on October 16, 2025
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Teri PD
Belleville, US
★★★★★ 5
FANTASTIC FIT
Size: 16 Plus, Color: Washed Blue
I'm a 4'7" , 65 year old woman. Due to abdominal issues I needed jeans that give that extra something on the waist. I've tried on just about every brand of jeans ranging in size from adult/junior 6 to 12. If they fit on the legs the waist was huge. If they fit on the waist the legs and butt had enough room for me and a friend. I was resigned to wearing yoga pants and leggings with big shirts. My son mentioned that he loved the Amazon basics men's dress slacks, so I figured why not. First I looked at women's and juniors, and I knew from the measurements that I was still stuck. Then I remembered that about 15 years ago I'd buy girls pants (I was a size 12 in kids at the time) Looking at the sizes I knew a 12 was way too small, then I saw the 16 plus. With hesitation I bought them. Well glory be miss Agnes, THEY FIT. Comfortable, real jeans again. Sure, I have to take them up about 6 inches, but that's fine, not a problem. I'm just so happy to have real jeans again !!!
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Reviewed in the United States on November 30, 2023
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DeRobinson
Whiting, US
★★★★★ 5
Who doesn't love a unicorn?
Size: 2T, Color: Pink/Unicorn
Cute set but runs a bit big in my opinion for a size 2T. My grandbaby is tall for her age (22 months), but the pants were really long and loose on her, granted she's not chunky, so factor that in. Overall, it's a nice set and the material is soft (especially the pants) and seems like it would keep the little ones warm.
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Reviewed in the United States on December 31, 2025

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