Galileo Galilei the use of the compasses for 120 lire. In about 1593, Galileo constructed a thermometer, using the expansion and contraction of air in a bulb to move water in an attached tube. In 1609, Galileo was, along with Englishman Thomas Harriot and others, among the first to use a refracting telescope as an instrument to observe stars, planets or moons. The name "telescope" was coined for Galileo's instrument by a Greek mathematician, Giovanni Demisiani, at a banquet held in 1611 by Prince Federico Cesi to make Galileo a member of his Accademia dei Lincei. The name was derived from the
Zacharias Janssen Eventually, the case was dismissed. Janssen returned to Middleburg in 1621. Janssen's life was documented by the many investigations on the subject before the Second World War. Many of the Middelburg archives were destroyed by a bombing of Middelburg on May 17, 1940, during the Nazi invasion of the Netherlands. Without these earlier studies, very little would be known of Janssen's life at all because all original files were lost in the fires following the bombardment. Zacharias Janssen Zacharias Janssen (also Zacharias Jansen or Sacharias Jansen) (1585 – pre-1632) was a Dutch spectacle-maker from Middelburg associated with the invention of