TY - BOOK AU - Sobel,Dava TI - Longitude SN - 1857025717 U1 - 526.6209 S677L 1998 PY - 1998/// CY - London PB - Fourth Estate Ltd KW - Longitude Measurement History KW - Harrison, John, 1693-1776 N2 - First published in 1996, Dava Sobel's story of an epic scientific quest - how to calculate longitude. The thorniest scientific problem of the day had occupied scientists and their patrons for the better part of two centuries until John Harrison dared to imagine a mechanical solution. The story encompasses astronomy, navigation and clockmaking ER -