Flintglas voor een astronomische kijker van Chance Brothers and Co op de Great Exhibition van 1851 in Londen 1851

This 1851 photograph by C.M. Ferrier & F. von Martens captures a "Flintglas voor een astronomische kijker" (Flint Glass for an Astronomical Telescope) displayed at the Great Exhibition of 1851 in London. Created by Chance Brothers and Co, the lens is a significant example of technological advancement in the 19th century, showcasing the impressive scale and detail of scientific instruments. The photograph, with its clear detail and focus on the lens's concentric layers, highlights the intricate craftsmanship involved in its creation. The image is a testament to the Victorian era's fascination with scientific exploration and the pursuit of knowledge.