It was to solve the problem of spatial resolution that in 1960 William E.Gordon of Cornell University proposed to build the Arecibo antenna 305 m in diameter in Puerto Rico. The place was chosen because it is the American territory (with Commonwealth status) located closest to the equator which also facilitates the study of planets …

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), …