traction elevator multiple cables overspeed governor brakes

Elevators do not hang from a single cable

2–6 cables

Modern traction elevators typically use 2–6 support cables rather than one. Each cable can support the elevator’s rated load plus 25%, and high-rise elevators may use 12 or more.

Studies challenge claims about full moons

37+ studies

At least 37 studies have invalidated claims linking lunar phases to effects such as more psychiatric admissions, traffic accidents, homicides, or suicides.

COVID-19 mortality risk differed enormously between age groups

Early estimates of COVID-19's infection fatality risk showed a steep increase with age. Children faced a much lower risk of dying after infection than very elderly adults, although risk also depended on health, immunity and access to treatment. Population averages could therefore be misleading: two places with similar infection counts might experience very different numbers of deaths.

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traction elevator multiple cables overspeed governor brakes

Elevators do not hang from a single cable

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