Dr. Chris Lawrence explains Read his words Transcription of the audio "Loewenhoek used the microscope perhaps more extensively than anyone else at this time to investigate the body. He described ...

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 the ...

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 ...

Glass can be notoriously difficult to identify. Signatures, if there are any, can be faked, molds can be reused, and glassmakers often imitated one another’s decorations. Stiegel-type glass is an ...