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Coronavirus cure

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Marco:
First of all Viruses can't multiply in dust and some recent research contends that airborne transmission is in fact dominant.

Also as I said, when they use it in an air-conditioner before a filter or in an electrostatic precipitator there are no ions coming out. They essentially use a coarse grounded filter, which normally won't catch the fine particles ... but because the particles get ionized they do, together with all the other ions.

cdev:
I could certainly use a good air filter without lots of static pressure like my HEPA filter has.


Is there any way to test without destroying your multimeter, if a filter with ionizer inside is emitting high voltage particles? Something with a very high input impedance and bulletproof? It just has to be a relative measurement.

Because I don't want to make something that ionizes the air outside of its box and makes dust stick to walls and other things.

Either whatever I  use removes dust without ions escaping, or I cannot use it. It has to be self contained, and easy to clean because dust makes me sick.

A three wire plug that grounds it, no problem.

Marco:

--- Quote from: cdev on June 18, 2020, 12:18:42 pm ---Is there any way to test without destroying your multimeter, if a filter with ionizer inside is emitting high voltage particles?

--- End quote ---

You could simple connect a metal plate to earth through the multimeter and put it on the current measuring or voltage setting (ie. 10 Meg shunt current measurement). Hold it in front and see if it makes a difference when you turn the ionizer on (the airflow alone might cause some static charge).

That said, there's not that many residential air filters which work this way. They are heavily used industrially of course, but not so much in consumer applications. Even the washable electrostatic filters for HVAC seem to rely on friction to create ions in the air rather than ionizers.

splin:
For UK residents (or those who can spoof their IP location) BBC radio 4's 'Inside Science'  programme covered the engineering of buildings, public transport etc. to control infection:

https://www.bbc.co.uk/sounds/play/m000jxvp

Perhaps most interestingly, starting at 9:05, Birmingham University (UK) have developed anti-bacterial surface treatments with very long lifetimes - several years at least. Bacteria are killed within milliseconds of contact; they are very sure they will be equally effective against coronavirus but need to test it when their labs, closed by the lockdown, become available again (a few weeks work).

The process involves nitriding to bind anti-bacterial chemicals such as bleach or chlorhexidine to the surface. It has been succesfully trialled in the Royal Navy for 12 months. It can't be retro-fitted to existing surfaces but they are investigating films that can be applied. This sounds very promising and a relatively cheap way of eliminating risks of contact transmission in public places, especially hospitals, by replacing light switches, door handles, water taps etc.

No doubt the bureaucrats will manage to kill it in short order.

[EDIT] Corrected the programme name from 'Science Direct'. No idea where that came from.

themadhippy:

--- Quote ---by replacing light switches, door handles, water taps etc.
--- End quote ---
No need for fancy new technology,just use copper ,ok  maybe not light switches.

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