Kilo The Kibble Balance, an exquisitely accurate weighing machineloosens France’s grip on the kiloas it measures mass more accurately. From 1790s, 1 kg = a cylinder of metal (which changes weight as it reacts with air) in a Paris vault. The Kibble, a 1975 British invention, defines weight against the Planck constant, one of…
Tag: accurate
Enough Enough to remember just 3 words to find anywhere, including street-less villages & uninhabited spots. 2013 invention by London startup used geocoordinates to divide Earth into 57tn squares of 3m x 3m (100 sqft), each with unique word combinations. The system is as accurate as the best GPS. Available in many languages, but oceans…