Spectroscopy

In 1666, during an optical experiment that he later described as “crucial,” Newton discovered the specter of light by playing with a prism in a darkened room. Although his experience will be criticized by the Roman clergy until the early eighteenth century for its theological consequences (the white light was not pure, immaculate, but composite), …

Professional Astronomy

When you see the size of small astronomical instruments sold in specialty stores, they only impress novices. On the other hand, a telescope of 200 mm in diameter measuring between 1.5 and 2 m in height like the one presented above on the left intimidates already an amateur informed by its proportions and the quality …

Sky Surveyors

As the day dies, on the promontory of a mountain at the forefront of the universe, a dome opens. In the reddish opening is a telescope with unusual dimensions. Moments later, the giant’s bright eye comes to life, looking towards infinity. Mechanically we follow his movements and a question comes naturally to our mind: What …

The Galilean Glasses

At the same time, Galileo turned his “optical tube” to the sky and invented the telescope. She was growing 30 times. He improved the definition of the movement of bodies in space, developing the concept of inertia. This notion allowed him to explain the movement of a mass in the field of gravity. Though a …

Arab Influence

In the Muslim world, whose intellectual centers in the Middle Ages were located in Damascus (Syria) and Baghdad (Iraq) and Samarkand (Uzbekistan), it was inconceivable that theologians would only deal with religious affairs. Indeed, the interpretation of the Koran required, for example, knowledge of geography and astronomy if only to orient oneself for prayer and …