Inside a very British ioniser. (And how they fell out of favour.)

I've always loved the slightly mystical technology of ionisers. When I was a kid I asked for one for Christmas and had it open within hours.
When you turn an ioniser on it makes virtually no noise - just a faint hiss from the needles. There are no flashing lights and nothing moves. Maybe this is why the marketing of these things got a bit too creative. People were told that if they got one, their home would feel like a waterfall in the middle of a forest, and they would feel refreshed and energised by the "vitamins of the air".
The whole marketing blurb has permanently contaminated the word "ioniser" and it's now used to advertise all manner of devices which are absolutely not ionisers. Notably the rathed destructive ozone generators. (Real ionisers only create a tiny amount of ozone.)

I genuinely believe that ionisers do a good job of precipitating microscopic particles out of the air. The downside being that they do so indiscriminately onto every surface in a room, and make a bit of a mess as they do so. They have been shown to prevent cross infection in schools and hospitals, and it makes me wonder if a good technology has fallen out of favour without proper scientific evaluation.

Here's a link to the website with that picture of a huge (but non-functional) Chizhevsky Chandelier that is a tribute to the work of Alexander Chizhevsky's research into ionisation.
https://www.kp40.ru/news/accomp/62663/

A very intriguing Google image search for Люстра Чижевского (Chizhevsky's chandelier):-
https://www.google.com/search?q=%D0%9B%D1%8E%D1%81%D1%82%D1%80%D0%B0+%D0%A7%D0%B8%D0%B6%D0%B5%D0%B2%D1%81%D0%BA%D0%BE%D0%B3%D0%BE&sxsrf=ALeKk030cau0nnFMBC_wfN8tjsVVvR8qzg:1585288619954&source=lnms&tbm=isch&sa=X&ved=2ahUKEwjc5buo_LnoAhWqxIUKHTUtB34Q_AUoAXoECAsQAw&biw=1366&bih=641

I've got an urge to make a big Chizhevsky's chandelier type thing now. Not such a great idea in a low ceiling bungalow.

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