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Description
Cats' Paws and Catapults: Mechanical Worlds of Nature and PeopleNature and humans build their devices with the same earthly materials and use them in the same air and water, pulled by the same gravity. Why, then, do their designs diverge so sharply? Humans, for instance, love right angles, while nature's angles are rarely right and usually rounded. Our technology goes around on wheels and on rotating pulleys, gears, shafts, and cams yet in nature only the tiny propellers of bacteria spin as true wheels. Our hinges
Nature and humans build their devices with the same earthly materials and use them in the same air and water, pulled by the same gravity. Why, then, do their designs diverge so sharply? Humans, for instance, love right angles, while nature's angles are rarely right and usually rounded. Our technology goes around on wheels and on rotating pulleys, gears, shafts, and cams yet in nature only the tiny propellers of bacteria spin as true wheels. Our hinges turn because hard parts slide around each other, whereas nature's hinges (a rabbit's ear, for example) more often swing by bending flexible materials. In this marvelously surprising, witty book, Steven Vogel compares these two mechanical worlds, introduces the reader to his field of biomechanics, and explains how the nexus of physical law, size, and convenience of construction determine the designs of both people and nature. "This elegant comparison of human and biological technology will forever change the way you look at each." Michael LaBarbera, American Scientist"Binding Type: Paperback
Publisher: W. W. Norton & Company
Published: 01/17/2000
ISBN: 9780393319903
Pages: 384
Weight: 1.10lbs
Size: 7.92h x 6.25w x 0.95d
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4.4 ★★★★★
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Product Reviews
★★★★★ 5
Good Mop for home use
It’s been a really nice steam mop to have. It heats up quick and it produces a good amount of steam. The handle is sturdy. The extra mop pad is extremely useful. The swivel is also quite nice; letting me get those spots at different angles. The water tank has a good capacity for the jobs. More than enough for what I’ll be using it for; like the kitchen and living rooms. Another plus is how lightweight it is compared to other mops I’ve used. Overall, really good value for a steam mop.
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Reviewed in the United States on May 16, 2026
★★★★★ 5
Works good for me.
Very easy to put together. Holds plenty of water to mop a large area. Comes with 2 microfiber pads that are washable. Didn’t leave a lot of water on the floor. My floor dried quickly especially with the ceiling fan on. You do have to vacuum debri up first then mop. Nice attachment to steam clean other things in the house if needed. Does a good job for the price.
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Reviewed in the United States on June 5, 2026
★★★★★ 5
Powerful Steam Mop for Easy Deep Cleaning.
Color: White, Color: White
I’m very happy with this steam mop! It heats up quickly and cleans my floors really well without using harsh chemicals. The detachable handheld steamer is super useful for cleaning bathrooms, kitchen corners, and even windows. I also like the long power cord and the different attachments that make cleaning easier. Lightweight, easy to use, and a great value for the price!
If you have a small kids or baby it’s impossible to keep the floor clean, because they are dropping all the time milk, water, juice but this steam mop help me a lot.
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Reviewed in the United States on May 21, 2026
★★★★★ 5
Light Steam Mop
Color: White
I’ve been using this steam mop around the house and it’s been pretty decent. It heats up fast and the steam is strong enough to lift the usual kitchen and hallway mess without me scrubbing forever. The water tank isn’t huge, but it lasts long enough for a quick clean of a couple rooms.
The handheld part is actually useful. I’ve used it on the bathroom tiles and around the stove, and it does a better job than sprays. It’s light enough, though after a while you feel it a bit in the wrist. The long cord helps so I’m not constantly unplugging it.
The mop pads stay on and wash fine. The only thing that bugs me is the head doesn’t swivel as smoothly as I expected, so getting under low furniture takes a bit of angling.
Overall, it’s a good everyday steam mop.
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Reviewed in the United States on May 21, 2026
★★★★★ 5
I think the quality and price are fantastic
Color: White, Color: White
An excellent steam cleaner—very easy to use, removing stains in just one or two passes. It is quite lightweight, which makes cleaning much easier. It comes with various accessories for cleaning different surfaces. I think the quality and price are fantastic.
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Reviewed in the United States on May 25, 2026
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