 Complete the following phrase:  In the 1860s and 1870s advances on Woodwards design were made. Jacob Wothly of Aachen improved Woodwards design with a reflector and condenser of one metre 39.37 inches diameter and a focus of two meters about 612feet, attracting much attention, and presented it to the French Academy of Sciences, October 8, 1860, and at the Societe Francaise de Photographie in early November 1860, selling the design to Disderi, reportedly for 20,000 francs soon after, who was awarded a medal for his enlarged photographs at the 1862 