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Researchers Find Finger Snap Has Highest Acceleration the Human Body Produces

Author: infodocket

Score: 24

Comments: 8

Date: 2021-11-29 22:17:53

Web Link

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JoeAltmaier wrote at 2021-11-29 22:52:01:

Similarly, cracking knuckles was a mystery until Dr. Adrien Flatt (hand surgeon, U of Iowa) took scans of a knuckle being 'cracked'. It was bubbles in the joint fluid being squeezed out of the compressed joint back into solution.

Hey! I wonder if that action produces similar accelerations?

charlysl wrote at 2021-11-30 00:51:47:

Ig Nobel Prize right here

serverlessmom wrote at 2021-11-29 22:57:42:

now I get to feel like a pistol shrimp every time I snap.

HeyLaughingBoy wrote at 2021-11-29 23:27:10:

Ha. That was the first thing I thought of when I read this.

missedthecue wrote at 2021-11-30 05:19:50:

How fast does the end of your tongue/lips flicker when you blow a raspberry?

dTal wrote at 2021-11-30 15:55:27:

Assuming 2mm deflection and 20 Hz raspberry:

2mm ⋅ (2π⋅ 20 Hz)^2 ≈ 32 m/s^2

Unfortunately this is linear acceleration and thus not directly comparable to the 1.6 × 10^6° / s^2 (or approximately 30,000 radians per second squared) _angular_ acceleration that the researchers recorded.

sys_64738 wrote at 2021-11-30 01:30:40:

I thought it was a sneeze.

orra wrote at 2021-11-30 08:54:12:

Perhaps, but that's not in scope of this study:

> a snap of the finger produces the highest rotational acceleration observed in humans, even faster than the arm of a professional baseball pitcher.