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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4.2 ★★★★★
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DK
Battle Creek, US
★★★★★ 5
Fun toy for dogs
Color: Dim Sum Dumpling Pet Toy Set
My dogs enjoyed them. They didn’t last long, but it’s not due to the quality of the toy. My dogs are very hard on toys, so this was affordable. You get 3 toys and I have 3 dogs. Win win.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 12, 2026
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Verified Purchase
rhpatz
Charlottesville, US
★★★★★ 4
Item not quite like the picture.
Color: Barkfast Dog Toy Set
I didn’t realize they were stuffed and not flat.
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Reviewed in the United States on March 23, 2026
S
Verified Purchase
S.Noelle
Pawtucket, US
★★★★★ 5
Pups all time FAVORITE!
Color: Dim Sum Dumpling Pet Toy Set
Our pups FAVORITE “ball”. He’s obsessed and has a blast with these little dumplings. Small size toy, but our medium labradoodle loooves them. Not to loud of an squaek either. They last quite awhile before he pops the squeaker. Fabric holds up really well.
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Reviewed in the United States on March 13, 2026
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Verified Purchase
BL
Charlottesville, US
★★★★★ 5
Great squeaky fetch toy for small dogs
Color: Dim Sum Dumpling Pet Toy Set
My dog loves these little squeaky dumpling toys. They are the right size for small dogs (under 20 pounds) to chase and fetch, and they have good squeakers inside. They have a friendly look and my dog can fit them in her mouth.
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Reviewed in the United States on January 4, 2026
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Verified Purchase
Riverady241
Pawtucket, US
★★★★★ 5
Cute toy for small dogs!
Color: Pinata Dog Toy
My dog is obsessed with this toy. This does not have a squeaker in it which is great cuz she doesnt like them. The crinkles and rope seem very durable. She did eat the tail very quickly but overall its held up well! Great tug toy for a small dog or puppy!
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Reviewed in the United States on May 10, 2026

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