On Thu, Oct 25, 2018 at 12:19 PM Warin <61sundow...@gmail.com> wrote:
> On 25/10/18 21:42, Paul Allen wrote: > > On Thu, Oct 25, 2018 at 7:38 AM Joseph Eisenberg < > joseph.eisenb...@gmail.com> wrote: > >> I am working on rendering man_made=telescopes, starting with >> telescope:type=radio. Next will be telescope:type=optical. >> > > I do hope that telescope:type=audio (or accoustic, your choice) is on your > to-do list. It would be > nice to map these: https://en.wikipedia.org/wiki/Acoustic_mirror (there > are still a few hanging > around from WW II). > > > These would be; > disused:telescope:type=audio > > or possibly after all this time abandoned: > The wiki (or at least the bit I looked at some time ago) seems to state that the difference between disused and abandoned is how much effort would be required to bring it back into operation. Since these only need microphones and amplifiers to be restored to full function, they're disused, not abandoned (by that wiki definition). At least one of these telescopes is a listed building: https://britishlistedbuildings.co.uk/101271803-the-listening-post-selsey More info at https://www.theregister.co.uk/2018/05/31/geeks_guide_to_britain_sound_mirrors_north_east/
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