Lasers, by Hal Hellman 65512 [author: Hal Hellman] [Link: https://www.gutenberg.org/6/5/5/1/65512] [Files: 65512-0.txt; 65512-h.htm] Thanks to Stephen Hutcheson and the Online Distributed Proofreading Team at https://www.pgdp.net Regards, Jacqueline