This is a list of past revisions of The isotropic antenna. Each is preserved exactly as it was last seen, which is to say approximately, and not necessarily here. Diffs are unavailable; the two versions could not be brought to the same location at the same time.
cur | prev2026an editor(talk | contribs). . (1,995 bytes)(+165) m . . (→ added the loudspeaker. sound is longitudinal, so a pulsing sphere manages the thing without difficulty, and the obstruction was never the sphere)(current)
cur | prev10:02, 2 Feb 2024an antenna engineer(talk | contribs). . (1,830 bytes)(+110) m . . (→ a nail in a board is an antenna and its pattern is not a sphere. there is a null off each end of it, and off each end is where you were standing)
cur | prev09:14, 2 Feb 2024TheRealMudGeometer(talk | contribs). . (1,720 bytes)(+70). . (I BILT ONE. IT IS A NALE IN A BORD AND IT GOS OUT THE SAME ALL ROUND. YOU LOT HAVE OVER THORT THIS LIKE YOU DO)
cur | prev1998an editor(talk | contribs). . (1,650 bytes)(−65) m . . (→ struck impossible from the lead and put the condition back onto it. what is impossible is one fixed polarisation, which is a narrower claim and the true one)
cur | prev1994a physicist(talk | contribs). . (1,715 bytes)(+400). . (→ it can be done. a u of wire with the cross piece taken to nothing, and the pattern comes out isotropic. the power comes out with it, but the pattern is isotropic)
cur | prev1993a standards committee(talk | contribs). . (1,315 bytes)(+180) m . . (→ clause 2.157 while we are here: free-space loss is the loss between two of them. two. this has been the case since before any of us arrived and nobody has minded)
cur | prev1985a catalogue(talk | contribs). . (1,135 bytes)(+95). . (→ our gains are quoted in dBi from this edition. the figure is 2.15 larger and the antenna is the same antenna)
cur | prev1963a mathematician(talk | contribs). . (1,040 bytes)(+150) m . . (→ filed the same result under the unity gain antenna. an antenna of gain one is what every antenna already averages to over the sphere, which is a duller thing to be unable to build)
cur | prev1951an antenna engineer(talk | contribs). . (890 bytes)(+360). . (→ it is impossible, and the proof is four lines of topology and no electricity at all. the far field lies flat against the sphere of directions, and a flat field of one length has to fail somewhere)
cur | prev1932a standards committee(talk | contribs). . (530 bytes)(+210). . (→ the definition wants the word hypothetical in it, and at the front, so that nobody writes in asking us where one may be purchased)
cur | prev1893a telegraph engineer(talk | contribs). . (320 bytes)(+320). . (created page; a source that sends alike in every direction, as something to compare the real ones against. it need not exist in order to be useful and I do not propose to build one)
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