Sentences with phrase «samples of airborne particles»
Not exact matches
He gathered a bit of rainforest air, using an instrument that sucks a sample through a fine nozzle and sprays it onto a ceramic square half a millimeter on each side, where any microscopic airborne particles get stuck.
http://discovermagazine.com/
Long before satellite sensors filled the sky, scientists like Reheis sought to identify the provenance of widely spread sediments by collecting samples of airborne dust particles and analyzing their mineral content.