the.com/field

where physics, farmers, and battle-hardened generals all stake their claim to flat ground

means An open expanse of land, often cleared for crops or sport, or by extension any defined area where some activity, force, or study operates.

from From Old English 'feld,' meaning open country or plain — land without trees. It belongs to a wide Germanic family (compare Dutch 'veld' and German 'Feld') and is probably rooted in an ancient idea of something flat or spread out, possibly related to the root behind 'flat' itself. From literal grassland the word fanned out to cover everything from the battlefield to the playing field to the magnetic and gravitational 'fields' of physics — anywhere a force or pursuit holds sway over its patch of ground.

physics meaning
a value assigned to every point in space
magnetic fields
birds navigate by sensing Earth's invisible lines
farm origin
old English feld meant open, treeless land
math fields
sets where you can divide without breaking rules
left field
baseball idiom for the gloriously unexpected
for instance

wembley stadium pitch — england's national football ground, 115 yards long, hosted 1966 world cup final

lord's cricket ground — home of marylebone cricket club in london since 1814, hosts the ashes

wimbledon centre court — all england club's grass court in southwest london, oldest tennis tournament since 1877

arlington national cemetery — 404 acres in arlington, virginia holding 400,000 graves since 1864

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