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
Giovanni Faber has been credited with giving the microscope its name. In 1609 fellow Lincean Galileo developed a compound microscope with a convex and a concave lens which he called the "occhiolino", the "little eye". In 1624 Galileo presented his occhiolino to Prince Federico Cesi, founder of the Accademia dei Lincei. One year later Giovanni Faber coined the word "microscope" from the Greek words "μικρόν" ("micron") meaning "small", and "σκοπεῖν" ("skopein") meaning "to look at". The word was meant to be analogous with "telescope", another word coined by the Linceans. In 1608 Faber became a naturalised Roman by adopting the legal status