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ewiley
Jul 9, 2003

Well, you asked.


College Slice



https://www.youtube.com/watch?v=4wPX2CMib9Y

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ewiley
Jul 9, 2003

Well, you asked.


College Slice



http://www.npr.org/2016/03/26/47162...e-hospital-no-3

From NPR today

ewiley
Jul 9, 2003

Well, you asked.


College Slice

IronicDongz posted:

this makes so much sense because I've seen lil spiders drifting around the air in my basement before, and there's little to no wind currents down there at all

the tweet misquotes the article though, it's not magnetic fields it's electric fields.

Oh you're right, spiders are exploiting the difference in charge between the atmosphere and the earth, flying for the same reason your hair stands on end when you hold on to a van de Graaff generator. Still incredibly badass.

quote:

When their silk leaves their bodies, it typically picks up a negative charge. This repels the similar negative charges on the surfaces on which the spiders sit, creating enough force to lift them into the air. And spiders can increase those forces by climbing onto twigs, leaves, or blades of grass. Plants, being earthed, have the same negative charge as the ground that they grow upon, but they protrude into the positively charged air.

ewiley
Jul 9, 2003

Well, you asked.


College Slice

Ornamental Dingbat posted:

Aren't electric charge and magnetic charge the same thing?

they are, but the earth's magnetic field is not related directly to the static charge difference between the atmosphere and the planet. 🤓

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