Assertion: isotropic antenna | /r/CapableOf | radiate equal power flux density
Facets:
value: over a sphere
type: LOCATION
Source sentences:
text: Since an isotropic antenna radiates equal power flux density over a sphere centered on the antenna, and the area of a sphere with radius r {\displaystyle r} is A = 4 π r 2 {\displaystyle A=4\pi r^{2}} then