Posted on 04/27/2022 8:30:38 AM PDT by Chicory
I have been wondering about a couple of things.
First, Faraday cages protect electronics within them from EMPs, right? So would the metal body of a car act as a Faraday cage and protect the electronics within the car?
And I was also wondering... there is a foil-lined envelope I can keep my credit card in to prevent a passerby with a special machine from stealing the info... I wondered if a similar envelope could protect my phone from being located all the time? And maybe that would also protect the phone from EMPs?
Note: I am not going anywhere that would be of legitimate interest to anyone, but I just don't like the idea that they have records of everywhere my phone goes.
The effects of an EMP are basically unknown.
Tests have been done, but that was with an X megaton blast Y miles above the target.
What if it was more megatons? Or if the blast was not directly overhead?
Frankly, nobody knows what might happen. It could be like Y2K where there was hysteria and no consequences or it could be like 9/11 where burning fuel weakened a building to the point of collapse.
A car is NOWHERE close to being a faraday cage.
“Since phones radiate location on the gigahertz freq, I think there would be no effect by wrapping it with metal etc.”
Aluminum foil does strongly attenuate radio waves.
I am not sure why you refer to gigahertz as higher frequencies are attenuated more.
The microwave oven door uses a Faraday cage to block the gigahertz radiation.
Note the difference between “shield” and “cage”.
From what I understand most anything without a long exposed “antenna” (metal to conduct) is not likely to be seriously affected.
All that one second after stuff was fear mongering crap written for lobbyists to generate support.
“If you look up ‘Faraday Cage’ you will see that the protection requires a continuous conductive surface that leads to a ground wire for discharging the ‘pulse’. Thus a car fails due to windows and lack of ground.”
Does not need a ground.
All disabling Location does is make your phone stop sharing that info with apps. It still knows roughly where it is from tower triangulation and can still tattle on you via the servers.
“The rotation of the earth generates power in the north-south power lines. “
Where did you see that?
“It still knows roughly where it is from tower triangulation and can still tattle on you via the servers.”
My understanding is the location information is on the provider side and not on the phone.
Depends on what all stuff you’ve got turned on. Location uses stuff in addition to what the towers tell the provider (and the provider tells the phone) to get better pinpointed to share with apps. But at the very least the provider has the tower information to know where you are.
I do now acknowledge that my cellphone does use triangulation plus GPS for location.
Easy way to protect a phone. Go to some cheap appliance store or Waimart etc and look for a very small ‘microwave’...
Take two phones with you or a friend with a phone.
Put your phone in the small microwave and ask your friend to dial your number.
If the phone rings in the microwave move on to the next one...and repeat.
Here’s one for less than %60 on Amazon:
https://www.amazon.com/s?k=small+microwaves+small+space&i=garden&crid=C1JKQY793ZKV&sprefix=small+microwave%2Cgarden%2C270&ref=nb_sb_ss_ts-doa-p_3_15
Easy way to protect a phone. Go to some cheap appliance store or Waimart etc and look for a very small ‘microwave’...
Take two phones with you or a friend with a phone.
Put your phone in the small microwave and ask your friend to dial your number.
If the phone rings in the microwave move on to the next one...and repeat.
Here’s one for less than $60 on Amazon:
https://www.amazon.com/s?k=small+microwaves+small+space&i=garden&crid=C1JKQY793ZKV&sprefix=small+microwave%2Cgarden%2C270&ref=nb_sb_ss_ts-doa-p_3_15
If the microwave is functioning as a faraday cage the phone inside won’t ring.
For larger things - chicken wire works better than solid metal - that’s the rumor...
I thought it was 125 miles up...
“For larger things - chicken wire works better than solid metal - that’s the rumor...”
I am not sure what you mean?
Something about wanting the emp charge to be dissipated by being ‘caught’ in the chicken wire.
“When making a tinfoil hat, is it shiny side in or shiny side out?”
exact same question when microwaving food wrapped in aluminum foil ...
Where did you see that?
I don’t remember but I think it was the same place they said power lines lost 50% of the power.
This might work:https://physics.aps.org/articles/v9/91
“I don’t remember but I think it was the same place they said power lines lost 50% of the power.”
You should stay away from those biased sites spewing garbage.
And, please don’t repeat it in posts.
To function as a Faraday cage or shield for a given wavelength of electromagnetic radiation, any holes in it need to be smaller than the wavelength of the electromagnetic radiation of interest, and the cage thicker ( skin effect) than the wavelength. That would imply autos would work poorly to shield against EMP from a nuclear device.
Disclaimer: Opinions posted on Free Republic are those of the individual posters and do not necessarily represent the opinion of Free Republic or its management. All materials posted herein are protected by copyright law and the exemption for fair use of copyrighted works.