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Description
Cycles of Time: An Extraordinary New View of the UniverseThis groundbreaking book presents a new perspective on three of cosmology's essential questions: What came before the Big Bang? What is the source of order in our universe? And what cosmic future awaits us? Penrose shows how the expected fate of our ever accelerating and expanding universe heat death or ultimate entropy can actually be reinterpreted as the conditions that will begin a new "Big Bang." He details the basic principles beneath our
This groundbreaking book presents a new perspective on three of cosmology's essential questions: What came before the Big Bang? What is the source of order in our universe? And what cosmic future awaits us?
Penrose shows how the expected fate of our ever-accelerating and expanding universe--heat death or ultimate entropy--can actually be reinterpreted as the conditions that will begin a new "Big Bang." He details the basic principles beneath our universe, explaining various standard and non-standard cosmological models, the fundamental role of the cosmic microwave background, the paramount significance of black holes, and other basic building blocks of contemporary physics. Intellectually thrilling and widely accessible, Cycles of Time is a welcome new contribution to our understanding of the universe from one of our greatest mathematicians and thinkers.Binding Type: Paperback
Publisher: Vintage
Published: 05/01/2012
ISBN: 9780307278463
Pages: 288
Weight: 0.47lbs
Size: 7.99h x 5.27w x 0.71d
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★★★★★ 5
That it will work on a Stil weedeater
Style: 9" 2T Cutting Blade
The edger connected to my Stil weed eater and worked great. I would recommend it to anyone.
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Reviewed in the United States on May 10, 2026
★★★★★ 5
Cut edges like a pro
Style: 9" 2T Cutting Blade
Better, much better than the OEM yellow and black brand. This has an all metal guard and the blade does not bind when it comes into contact with concrete. I have used it all summer for edging two commercial properties and my own lawn, it’s still turning and cutting with ease. Being all metal adds weight but the trade off over fragile plastic is worth the durability.
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Reviewed in the United States on November 4, 2025
★★★★★ 3
OK for light duty use only
Style: 9" 2T Cutting Blade
Not very strong or robust. Does fit my power head properly. Only recommend it for occasional, light duty use.
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Reviewed in the United States on November 5, 2025
★★★★★ 5
These work for the Worx trimmer WG928
Size: 16 Line Spools+4 Caps, Size: 16 Line Spools+4 Caps
Recently purchased the Work String trimmer and blower bundle. I found these and ordered them in hopes they were the right ones. They fit and work perfectly. Super easy to install. Pop out the old one and pop in the new. The string is pretty durable and thick. I love the idea of pre loaded spools. It got so annoying having to rewind the string on the spool every time I ran out. Price is fair and worth it. Highly recommend these if you have the same trimmer.
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Reviewed in the United States on September 2, 2024
★★★★★ 5
Worth taking the worry off my list.
Size: 16 Line Spools+4 Caps
Great to last forever and not pay over priced smaller packages.
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Reviewed in the United States on March 1, 2026