[noncount] : a quality that makes you continue trying to do or achieve something that is difficult. 1  What he lacked in talent he made up for in determination. 2  dogged/fierce/steely/stubborn determination.
The first modern solution of general relativity that would characterize a black hole was found by Karl Schwarzschild in 1916, although its interpretation as a region of space from which nothing can escape was first published by David Finkelstein in 1958.
Blue pectolite was apparently first found in the Dominican Republic in 1916 by Father Miguel Domingo Fuertes Loren. The story goes that he made a request to the Ministry of Mining to mine a blue rock he had discovered. Apparently, his request was not approved because no one knew what he was talking about.