Best in 7 days
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Description
Spacetime & RelativityWhy does time pass more slowly when you travel fast? Do speeding objects really get shorter and heavier? How can you reach a star which is four light years away in only three years? Is space really curved? In this brilliant little book, illustrated with numerous worked examples and helpful original diagrams, physicist Oliver Linton reveals the truly astonishing nature of the spacetime continuum we all inhabit. If you have ever wanted to think like
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Best in 7 days
Best in 7 days
Best in 7 days
Best in 7 days
4.8 ★★★★★
Based on 94 reviews
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Product Reviews
★★★★★ 5
Perfect Fit
Style: with Pre-Filter
These parts fit our vacuum perfectly and gave us replacements for almost everything. Quick shipping.
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Reviewed in the United States on May 4, 2026
★★★★★ 5
Best parts for the price
Style: with Pre-Filter
Just what I needed to get my vacuum back up and running.
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Reviewed in the United States on May 9, 2026
★★★★★ 4
Very good Value for replacement part and reliable
Style: with Pre-Filter
Very good product for the price - the front brushes wear fast compared to the original Eufy’s but for the value you do get a lot of product. So only 4 stars but just for the brushes “appearing to not last as long and bend but the buy is worth the extras. The filters look and work identical to the OEM. Good stuff - thanks!
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Reviewed in the United States on December 25, 2025
★★★★★ 5
Perfect fit, 11s running like new!
Style: with Pre-Filter
All parts fit perfectly. My vacuum lasts about 20 min longer since the filter isn’t clogging it. Also, replacing the spinning brush quieted it down significantly, it sounds like new again.
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Reviewed in the United States on May 20, 2026
★★★★★ 5
Replacement parts
Style: with Pre-Filter
Was so happy to find the replacement parts for my eufy robovac. Really makes a big difference in vac performance.
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Reviewed in the United States on April 5, 2026
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