Date of Birth: 04/02/1618
Place of birth: Bologna
Main essay Grimaldi "Physical science of light, color and the rainbow", containing most of the results of its activity as an experimental physicist and philosopher, was published in 1665, after his death. He opened the diffraction of light, it is systematically studied and formulated certain rules. In his work, described in detail the phenomenon of propagation of light, reflection, refraction, diffraction, vision, outlined his ideas (though controversial) about the nature of light, developed the theory of colors, apart from the color of "modification of the world." He described the solar spectrum produced by a prism. Together with Dzh.Richchioli identified (1662) magnitude of the Earth`s surface.