I learned non caking agent when growing crystal. The non-iodized salt from grocery store grow into strange looking white and cubioid shape crystals. That salt has yellow prussiate of soda in it.
A 30 Kg object drop from 1 meter onto one's foot will unleash around 300 Joules. The heaviest barbell plate is usually 25 Kg. So 300 Joules is a lots of energy. And I once heard a story, not sure how true it is, that someone put the defrib pads over the thigh and on activation the muscle contract so violently that breaks the bone.
ZOLL AED uses ten Type 123 Lithium batteries. It's a consumer grade battery commonly see in camera flashlight. Cost around $30 to replace if buy from Amazon. The battery's shelf life is usually in the range of several years, even with the regular AED self-testing.
I wonder what CERN going to do next. Which distro will they choose after CentOS 7? Rocky linux, Ubuntu, or go back to Scientific Linux. Lots of HEP softwares have pre-compiled packages for CentOS and Ubuntu. CERN has been pretty quiet in past several months.
I have a NanoPi R2S with OpenWrt for almost one year. It's a ARM device so uses very litter power. One of its two gigabits ports is converted from USB3. Works well with 500Mbps downlink.
There is a newer mode (R4S) with a PCIe converted gigabits port.