Recent comments in /f/askscience

Coomb t1_j9zs84p wrote

Reply to Can you experience g-force without acceleration? by tenminutes101010

The limited travel of the hydraulics, pneumatics, or other actuators driving the ride cab means that the ride cannot provide anything other than 1g, normal gravity, indefinitely. However, that does not mean that the ride cannot provide higher or lower than normal gravity for relatively brief periods of time. All it needs to do is be able to drive the cab with enough force to exceed its weight.

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robot_egg t1_j9zq5tz wrote

Reply to What makes ice 'sticky'? by insane_contin

This is a great question, and waaay more complicated than you might think. There's a symposium on ice adhesion at a scientific conference (the Adhesion Society Annual Meeting) that's been going on for years, which hints at just how complex it must be.

Surface texture can give a mechanical bond via a lock and key effect. But there's also some molecular level interactions; the surface of glass has a lot of Si-O-H groups, which hydrogen bond with water readily. Similarly, most metals have what's called a "native oxide" layer on the surface, which has similar M-O-H groups that can do the same thing.

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Coomb t1_j9zpiux wrote

Reply to Are nerves in the penis/vagina connected to other nerves that run down the body? by No_Sir_506

The pudendal nerve provides sensation (and motor control) in the genital area, including, as especially relevant to your question, the clitoris and penis. Various branches provide sensation to the rest of the genitalia (scrotum and vulva), the anal canal, the perineum, the pelvic floor, and surrounding areas of the legs (as well as other anatomical features in the area). In some people, it actually itself is a branch of the sciatic nerve, but in general it is certainly possible to have neurological damage that affects the sensory nerves in most of either or both legs which does not affect the sensory nerves for the genitals.

Please note that anatomy is complicated and actually varies from person to person and the pudendal nerve isn't necessarily the only sensory or motor nerve for the areas I mentioned.

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Ieatadapoopoo t1_j9zob38 wrote

Reply to comment by Uncynical_Diogenes in When a volcano erupts, does this affect the pressure building up in other volcanoes? by Rhamni

I’m sorry, I’m not trying to be pedantic, just making sure I understand, but it does sound like an educated guess, no? An insanely solid goes off course, but it sounds like we’re just really really certain of our guess. That’s enough to convince me, just wanted to be sure I had it right!

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