The frequency of humanity  FEB 06 2014

Death 1.8 Hz

Every day on Earth, an estimated 371,124 people are born and 154,995 people die. When you ask Wolfram Alpha about these rates, the scientifically inclined site returns a curious corresponding quantity: the frequency in hertz (aka the number of cycles/second in a periodic occurrence).

The frequency of humanity

Measurement in hertz is an unusual way to think about living and dying; hertz are typically reserved for things like human-audible sound frequencies (20 to 16,000 Hz), how fast your laptop's CPU runs (1 to 4 Ghz), or the frequency of the power running into your house (50 to 60 Hz). But if you subtract the death rate from the birth rate, you get a net rate of 216,129 new people a day, or about 2.5 Hz. That's the frequency of humanity. While that's a lot slower than your computer, it's in the same frequency ballpark as a human's resting heart rate (1.3 Hz), steps taken while walking briskly (1.8 Hz), or moderately energetic dance music (2.25 Hz).

Note: Illustration by Chris Piascik...check out his shop, where you'll find prints, tshirts, iPhone cases, etc.

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