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
Metius (crater) but generally it has a smoothed down appearance that is almost free of terraces. The floor is relatively flat with low central peaks. The most prominent crater on the floor is Metius B, located near the northeast rim. The eponym for this crater is the Dutch geometer and astronomer Adriaan Adriaanszoon, who went by the name of Metius. By convention these features are identified on lunar maps by placing the letter on the side of the crater midpoint that is closest to Metius. Metius (crater) Metius is a lunar impact crater located in the rugged highlands to the southeast of