ONE OF TEEN VOGUE'S "25 BOOKS BY BLACK AUTHORS THEY CAN'T WAIT TO READ THIS YEAR" ONE OF BETCHES' "22 BOOKS YOU NEED TO READ THIS YEAR" "As a fan of Grey’s An

Ever since the Irish mathematician William Rowan Hamilton introduced quaternions in the nineteenth century--a feat he celebrated by carving the founding equatio

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The Sun and stars rotate in di?erent ways and at di?erent velocity rates. The knowledge of how they rotate is important in understanding the formation and evolu