Among the many scientific contributions of Isaac Newton, one is that of Optics. Newton devised the first reflecting telescope, which are widely used today in the field of Astronomy and discovered that light was made up of an array of coloured rays. 

 

One of his experiments conducted during this study, was when Isaac used a prism to split white light into the spectrum of colours we are familiar with today. He developed the corpuscular theory of light, which states that all sources of light, emit large quantities of micrscopic projectile-like particles known as corpuscles and that these partciles are elastic, rigid and weightless.