air equivalent

air equivalent

[′er i′kwiv·ə·lənt]
(nucleonics)
A measure of the effectiveness of an absorber of nuclear radiation, equal to the thickness of a layer of air at standard pressure and temperature that absorbs the same fraction of radiation or results in the same energy loss as does the absorber.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Finally, the hand drier, if still on the wall, gave out a feeble waft of lukewarm air equivalent to letting an asthmatic llama breathe on your hands.
Breathing in Delhi air equivalent to smoking 44 cigarettes a day
And the LCA Mark II is the real in the sense that it will have much more powerful engine, better radar, it will have air to air equivalent capability.
But lift is generated by deflecting downward a mass of air equivalent to the mass of the airplane.
Just as people air-kiss Cilla Black on the telly, instead of a proper smooch, perhaps this is Thommo bringing in the air equivalent of the Glasgow Kiss.
The pilots were breathing air equivalent to 18,000 feet for 13 minutes for each display, so they were slightly hypoxic.
If EPA promulgates an MCL "more stringent than necessary to reduce the contribution to radon in indoor air from drinking water to a concentration that is equivalent to the national average concentration of radon in outdoor air," the Agency must establish and "alternative MCL." The alternative MCL (AMCL) is to be set at a level which would "result in contribution of radon from drinking water to radon levels in indoor air equivalent to the national average concentration of radon in outdoor air."
Stix figures that with 150 of his "laser walls" (see photo), "a mass of air equivalent to the global atmosphere could be processed once every 10 years." This estimate assumes mean wind speeds of 80 km/hr (50 mph) for 1-km x 5-km walls located high in mountain ranges.
Finally, the hand dryer - if still on the wall - gave out a feeble waft of lukewarm air equivalent to letting an asthmatic llama breathe on your hands.