Eric Walker added New Technology Uses Lasers to Transmit Audible Messages to Specific People | News Releases | The Optical Society to Photoacoustic effect

Eric Walker added New Technology Uses Lasers to Transmit Audible Messages to Specific People | News Releases | The Optical Society to Photoacoustic effect, and added Photoacoustic effect to Physics

Eric Walker added a number of topics and a number of links to Physics, and added Physics to Science, engineering, mathematics and the humanities