Reasonably accurate for the time, that is quite close to today's value of 149,597,870 km, determined by radar, which has now superseded transits and all other methods in accuracy.
Also beginning in the thirteenth century, there were new maps refined by precise calculations and the reports of sailors that made it possible to trace one's path with reasonable accuracy.
He quotes Google co-founder Larry Page to the effect that the "perfect search engine" will ''understand exactly what I mean and give me back exactly what I want."
Optically analytical balance in laboratory is one of the most common instruments, and is an essential tool on measuring weight precisely and sensitively.