Galilean moons century when other inner moons were discovered, and Marius' names became widely used. Galileo was able to develop a method of determining longitude based on the timing of the orbits of the Galilean moons. The times of the eclipses of the moons could be precisely calculated in advance, and compared with local observations on land or on ship to determine the local time and hence longitude. The main problem with the technique was that it was difficult to observe the Galilean moons through a telescope on a moving ship; a problem that Galileo tried to solve with the invention of
Hermanos Conde Hermanos Conde Hermanos Conde (Conde Brothers) are luthiers, makers of classical and flamenco guitars. The Conde dynasty was founded in Madrid by Domingo Esteso in 1915. Esteso trained his nephews Faustino and Mariano Conde Sr. Later, the young Julio Conde joined his brothers. Domingo Esteso died in 1937, and after that time the three Conde Brothers continued working for Esteso's widow under the name of "Viuda y Sobrinos de Esteso" (Esteso's Widow and Nephews) until 1960. In the early 1950s, Julio Conde set up a new handicraft guitar center. From 1960 until 1988-89 they took over the shop and called