fœnugreek
Look at other dictionaries:
History of the telescope — The earliest known working telescopes appeared in 1608 and are credited to Hans Lippershey and Zacharias Janssen, spectacle makers in Middelburg, and Jacob Metius of Alkmaar. The design of these early refracting telescopes consisted of a convex… … Wikipedia
Euclid's Elements — (Greek: polytonic|Στοιχεῖα) is a mathematical and geometric treatise consisting of 13 books written by the Greek mathematician Euclid in Alexandria circa 300 BC. It comprises a collection of definitions, postulates (axioms), propositions… … Wikipedia
Catoptrics — deals with the phenomena of reflected light and image forming optical systems using mirrors. From the Greek κατοπτρικός (specular) [ A Concise Dictionary of the English and Modern Greek Languages by Antonius Nicholas Jannaris, 1895 J. Murray]… … Wikipedia
