You searched for: “spherics
atmospherics, spherics, sferics (pl) (noun)
Electromagnetic radiation produced by natural phenomenam such as lightning: Atmospherics are disturbances of electrical origin causing interference with communication in wireless telegraphy, television, etc.

Sferics are atmospheric conditions caused by electromagnetic upheavals, especially as they affect radio transmission

This entry is located in the following units: atmo-, atm- + (page 6) -ics, -tics [-ac after i] (page 5) sphero-, spher-, -sphere- (page 5)
spherical geometry, spherics
The geometry of circles, angles, and figures on the surface of a sphere.
This entry is located in the following unit: sphero-, spher-, -sphere- (page 12)
spherics
Spherical geometry and spherical trigonometry.
This entry is located in the following units: -ics, -tics [-ac after i] (page 33) sphero-, spher-, -sphere- (page 14)