Centuries: 2nd century - 3rd century - 4th century

Decades: 220s 230s 240s 250s 260s - 270s - 280s 290s 310s 320s 330s

Years: 272 273 274 275 276 - 277 - 278 279 280 281 282

Births

Deaths

... field (which causes it to curve) is equal to Bqv. So, <math>\frac{mv^2}{r} = Bqv</math> (Where m is the mass of the particle, q is its charge, v is its ...