Duration of one beat8 tenths s
317 millionthsTV episodes
3.8 hundredthsMammal pees
About 0.8 seconds at resting heart rate
Photo from Wikimedia Commons
A Heartbeat
The 0.8-second rhythm that keeps the whole show running/Events & Phenomena
A single human heartbeat lasts about 0.8 seconds and generates roughly 1.3 joules of energy — enough to lift a 130-gram object one meter. The heart contracts with a force of about 1.5 newtons and pushes about 70 milliliters of blood per beat. Over a 75-year lifetime, the heart beats approximately 2.5 billion times without taking a single break, pumping enough blood to fill about 200 train tanker cars. It is the most reliable pump ever engineered — by nature.
Measurements
Contraction force1.5 N
1.5 billionDust motes
3 hundredthsDog leash pulls
Left ventricle squeeze force
Energy per beat1.3 J
2.6 tenthsSlamming doors
4.8 billionthsTesla batteries
About 1.3 joules per contraction
Stroke volume70 millionths m³
140 millionthsKiddie pools
700 millionthsCarry-on bags
About 70 mL of blood per beat
Peak systolic pressure16,000 Pa
32Blown candles
800,000Conversations
2.7 hundredthsChampagne bottles
About 120 mmHg; normal blood pressure
Cardiac power output1.5 W
3.8 tenthsNight lights
833 millionthsDishwashers
About 1.5 watts at rest; the body's tireless engine
Resting heart rate1.17 Hz
2.34Pendulum clocks
1.1 thousandthsSoprano high C notes
26.5 millionthsCD sample rates
About 70 beats per minute