Decades: 470s BC 460s BC 450s BC 440s BC 430s BC - 420s BC - 410s BC 400s BC 390s BC 380s BC 370s BC
Years: 432 BC 431 BC 430 BC 429 BC 428 BC - 427 BC - 426 BC 425 BC 424 BC 423 BC 422 BC
... abvolt sec Also called the "line"
oersted gauss / mu0
gilbert gauss ...
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