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Old 23-02-2019, 11:17 AM   #920
thermion
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Quote:
Originally Posted by iamawaveofthesea View Post
what does it mean?

it means that if you spray a load of aluminium particulates into the atmosphere does that then change the way that the atmosphere reacts to influence from radio waves or microwaves?

wheres your study on that?
The aluminium particles have to be at least a quarter of a wavelength long at the radio frequency in use to do anything. (See chaff or window in relation to radar. It can even be metal-coated plastic.)

That only reflects or scatters the radio signals. I think the US has experimented in this to try and create a sort of artificial ionosphere at much lower levels. But the bits disperse and fall to the ground. However, the ionosphere is not a critical part of global communications as it was up until the 1960s/70s. Fiber optic cables and satellites are used now.
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