the.com/heartbeat
the original drumline, beating roughly three billion times before it ever asks for a break
means The rhythmic contraction and expansion of the heart that pumps blood through the body, often used figuratively for a vital pulse or a moment so brief it lasts just one beat.
from A plain compound of two old English words — 'heart,' from Old English 'heorte' (cousin to Latin 'cor' and Greek 'kardia'), and 'beat,' from Old English 'beatan,' to strike. The word literally names the heart's striking, the body's built-in percussion. The figurative sense — 'in a heartbeat,' meaning instantly — is a much later flourish, borrowing the organ's quickness as a measure of speed.
- first beat
- starts around 22 days after conception, before you have a brain
- own pacemaker
- the heart fires its own signal, no brain required
- sync up
- hearts of close people can drift into matching rhythms
- daily count
- around 100,000 beats every single day
- broken heart
- real grief can stun the heart, mimicking an attack
lub-dub sound — acoustic phenomenon of aortic and pulmonic valve closure occurring ~60-100 times per minute in humans
heartbeat of earth — schumann resonance at 7.83 hz, the electromagnetic frequency of earth's ionosphere discovered in 1952