id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
asir-1804	Mihas, Pavlos	Software for Teaching through Interactive Demonstrations about Converging Lenses	2019	13	.pdf	application/pdf	4963	244	74	This uses a macro to simulate the finding of several image points b for several object points a. We introduce a step by step procedure to find the focal length and find the principal planes and finally the use of the focal length and principal points to construct the image.	cache/asir-1804.pdf	txt/asir-1804.txt