In physics, pressure quantifies the importance of force distribution on a surface area. our everyday life, physical sensation is related to exerted by mechanical rather than itself. However, apart from pain felt in ears when landing during flight or going countryside cities at lower altitudes, atmospheric air often remains unnoticed. literature, many experiments have studied effect pressure. th...

Mass analysis using laser electrospray mass spectrometry (LEMS) is demonstrated for the detection of trace samples of explosives at atmospheric pressure directly from a substrate. A non-resonant femtosecond duration laser pulse vaporizes native samples at atmospheric pressure for subsequent electrospray ionization and transfer into a mass spectrometer. LEMS was used to detect < 1 µg of 2,3-dime...