1. He is also the director of the Gas dynamics laboratory at Princeton. 2. Gas dynamic lasers can be pumped by combustion or adiabatic expansion of gas.3. In 1931, the Gas Dynamics Laboratory was added to the site. 4. He also co-authored " Fundamentals of Gas Dynamics ", 1958, Princeton Univ . Press. 5. HNB was experimentally used as a gas source for explosively pumped gas dynamic laser. 6. Pure gas dynamic lasers usually use a combustion chamber, supersonic expansion nozzle, and laser medium. 7. Roshko is known for his contributions to gas dynamics . 8. Like hexanitrobenzene, HNE is investigated as a gas source for explosively pumped gas dynamic laser. 9. Historically, two parallel paths of research have been followed in order to further gas dynamics knowledge. 10. Most existing weaponized lasers are gas dynamic lasers.