Piercy, Willis Duff · New York, Charles E. Merrill company · leaf 137
have beenmade in the field of astronomy could not have beenpossible without the telescope, the most importantinstrument used by astronomers. The first part ofthe word is the same Greek adverb meaning afar,found in telegraph and telephone; the last part is derived ASTRONOMICAL DISCOVERIES 135 from a… … Galileo to the naked eye. The telescope was invented by aDutch optician named Hans Lippershey about threehundred years ago. The Italian scientist Galileo,who was born at Pisa in February, 15G4, heard of the 13() INVENTIONS AND DISCOVERIES invention, began studying the principles upon whichit…
Inventions
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