the study of the dispersion of airborne biological materials, as pollen, spores, microorganisms, or viruses.
the study of airborne organisms, spores, etc
The scientific study of the sources, dispersion, and effects of airborne biological materials, such as pollen, spores, and microorganisms.
(of a spacecraft or satellite) to reduce velocity by taking advantage of a planet’s atmospheric drag.
a method of growing plants without soil by suspending them above sprays that constantly moisten the roots with water and nutrients.
the branch of mechanics that deals with the motion of air and other gases and with the effects of such motion on bodies in the medium. Compare (def 1). Contemporary Examples Americans built a fighter, the P-51, with aerodynamics that seemed to defy the laws of physics. The Nerds Who Won World War II Marc […]
- Aerodynamic trajectory
the path of an object, as a rocket, when the air is dense enough to modify the course of flight significantly.