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Unlike a fragmentation grenade, stun grenades are constructed with a casing designed to remain intact during detonation and avoid fragmentation injuries, while having large circular cutouts to allow the light and sound of the explosion through.
The tight spaces can increase airspeed, and the involvement of the blast wave causes air to reflect off walls and bend around corners. In the worst cases, this can produce a force equivalent to multiple times a human's body weight. The most dangerous critical indoor locations to avoid are windows, corridors, and doors.
The main causes of death and disablement in this state are thermal burns and the failure of structures resulting from the blast effect. Injury from the pressure wave is minimal in contrast because the human body can survive up to 2 bar (30 psi) while most buildings can withstand only a 0.8 bar (12 psi) blast.
The human body can survive relatively high blast overpressure without experiencing barotrauma. A 5 psi blast overpressure will rupture eardrums in about 1% of subjects, and a 45 psi overpressure will cause eardrum rupture in about 99% of all subjects.
Exposure to ELF waves can induce an electric current. Because the human body is conductive, electric currents and resulting voltages differences typically accumulate on the skin but do not reach interior tissues. [22] People can start to perceive high-voltage charges as tingling when hair or clothing in contact with the skin stands up or ...
“A lot of people just pour vodka in and don’t measure it, so it can actually be kind of dangerous as opposed to knowing you drank three cans of beer,” she said. “Nobody is really rationing ...
Research and experience have shown that while exposure to a vacuum causes swelling, human skin is tough enough to withstand the drop of one atmosphere. [ 73 ] [ 74 ] The most serious risk from vacuum exposure is hypoxia , in which the body is starved of oxygen , leading to unconsciousness within a few seconds.
But there’s no real reason, besides bureaucratic stubbornness, why the Half Dome cables need to be so dangerous. It’s a wonder more people haven’t died. It’s a wonder more people haven’t ...