1500s Developments in glass making and the science of optics (the study of rays of light). It was found that by using glass lenses, you could bend rays of light coming from an object. This could ...

Late 1600s – Dutch scientist Antonie van Leeuwenhoek constructed a microscope with a single spherical lens. It magnified up to ×275. 1800s - the optical quality of lenses increased and ...

He shows us how he restores an oil painting from the 1800s. This includes looking at it under a microscope, performing X-rays on the painting, filling in areas where paint has chipped off ...