Wat is nul in "scheikunde-Grieks"?

De Grieken kenden het begrip wel: als een berekening op 0 uitkwam, werd het woord οὐδέν gebruikt, dat “niets” betekent. "The Greek sexagesimal placeholder or zero symbol changed over time. The symbol used on papyri during the second century was a very small circle with an overbar several diameters long, terminated or not at both ends in various ways. Later, the overbar shortened to only one diameter, similar to our modern o macron (ō) which was still being used in late medieval Arabic manuscripts whenever alphabetic numerals were used. But the overbar was omitted in Byzantine manuscripts, leaving a bare ο (omicron). This gradual change from an invented symbol to ο does not support the hypothesis that the latter was the initial of ουδέν meaning "nothing".[10][11] Note that the letter ο was still used with its original numerical value of 70; however, there was no ambiguity, as 70 could not appear in the fractional part of a number, and zero was usually omitted when it was the integer." http://en.wikipedia.org/wiki/Greek_numerals#Zero

+Plus, http://nl.wikipedia.org/wiki/Griekse_cijfers