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Description
The Future of SpacetimeRichard Price: "An Introduction to Spacetime Physics" Stephen Hawking: "Chronology Protection" Igor Novikov: "Can We Change the Past?" Kip S. Thorne: "Speculations about the Future" Timothy Ferris: "On the Popularization of Science" Alan Lightman: "The Physicist as Novelist" Binding Type: Paperback Publisher: W. W. Norton & Company Published: 06 17 2003 ISBN: 9780393324464 Pages: 224 Weight: 0. 43lbs Size: 8. 24h x 5. 54w x 0. 55d
- Richard Price: "An Introduction to Spacetime Physics"
- Stephen Hawking: "Chronology Protection"
- Igor Novikov: "Can We Change the Past?"
- Kip S. Thorne: "Speculations about the Future"
- Timothy Ferris: "On the Popularization of Science"
- Alan Lightman: "The Physicist as Novelist"
Binding Type: Paperback
Publisher: W. W. Norton & Company
Published: 06/17/2003
ISBN: 9780393324464
Pages: 224
Weight: 0.43lbs
Size: 8.24h x 5.54w x 0.55d
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4.8 ★★★★★
Based on 22 reviews
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Product Reviews
★★★★★ 1
Edger Does Not Fit The 52CC Trimmer
Style: 9" 2T Cutting Blade
Might be a great cutter head?? I purchased the 52cc trimmer and edger as a package, however the edger does not fit the trimmer??? Therefore, it is useless... Will see if it fits my 25cc trimmer and maybe change the review... They should tell people in the description that their edger will not work with the 52cc trimmer....
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 18, 2026
★★★★★ 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
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