Why can't spiders climb up glass?
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My mum always catches them in a glass and they can't get out, till she puts them outside. Why is this and can you tell me your source. Thanks y'all.
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Answer:
To "cling", they use little prickly hairs on their legs. These hairs then cling to other materials, giving them the ability to walk up walls and such. They can grasp virtually anything even if it has only the slightest bit of texture. Glass, However, is slippery and has absolutely no texture at all. They cannot cling to something as smooth as this. That is also why they get trapped in the bath tub.
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Other answers
They can climb up glass but with difficulty...their feet are adapted to walk on rough ground.
EDWARD W
All they need is a tiny imperfection in the glass to climb up it.
alwaysmoose
Glass is too slippery and has almost no nooks and crannies where their legs can stick in.
ag_iitkgp
The surface of glass is too smooth for a spider get any grip with its legs. That's my guestimation, so I can't list a source. You can try Yahoo search or Wikipedia.
â??Markâ??
Because they don't have sticky feet like ants and flies. You can't climb up glass for the same reason.
opinionator
coz there's no friction.....the coefficient of frictin is v small nd as a result the spider wunt be able 2 hold on to it
tauras t
spiders cant climb glass because there feet are hooked..making them agile climbers..but glass is totally smooth so they cant hook on to climb
soldier of fortune
If that's what you think can you come round to mine and tell the one that's climbing up the glass he's in, that he can't do that
jamand
Unlike other critters who who have something akin to a suction cup on there toes, such as geckos and tree frogs, our secrete a sticky substance like mucous as is the case with slugs, snails, and Rosie (The Hut) O'Donnell, spiders utilize hook like projections that cling to rough or imperfect surfaces. Glass is to smooth for these hooks to find purchase.
Lone Star
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