What is a Faraday Cage and How Do You Make One?

[@salsepulveda494]

What happens if there are no holes whatsoever on the foil around the box? Does that make it a stronger Faraday Cage? Also, an EMP has an extremely powerful E1, E2, and E3. Does the foil protect it in that case?

[@erikwallebom]

Smaller holes blocks even higher frequencies. With no holes not even light comes in.

[@glensmillie5101]

Excellent presentation 😁 succinct and articulate, thankyooooooo ❤

[@danielstapler4315]

What type of electro magnetic waves could make it thru the holes in the foil? And what sort could make it thru the hole at end of the box?

[@davidhay1303]

Is their a relationship in the size of the EMP and the needed size of a cage? Basically can a small cage be overwhelmed?

[@maryjohnson2878]

Thank you!! Can I use this for my utility meters??

[@ObamaoZedong]

No point. In the event of an EMP the whole grid will go down. Better to keep a generator.

[@djcustoms6637]

​@ObamaoZedong I think you'll have bigger problems if someone drops an emp then your phone getting bricked 😂

[@cjalexanderjr8811]

Would that work blocking WiFi and cellular service?

[@billbyrd9845]

Thank you for the video. Can you think of any practical way (and not seen by my visitors) to disable cell phone traffic on Thanksgiving day when everyone insists on staring at their cell phones rather than visiting?

[@rgbcolor6450]

Install a metal roof and radiant foil barrier insulation. Change your windows to the low-E glass. None of this will matter if you can physically see the cell tower, but it will all attenuate the signal.

[@billbyrd9845]

@@rgbcolor6450 I tried all that. No luck. But thanks.

[@chutemi.]

Faraday cages are only effective in blocking radio waves within the confines of the cage. If you are interested in disrupting radio or cellphone signals within a designated area, you would need to procure a “jamming device”, which is a device that emits powerful radio waves with the intention of overriding weaker radio waves. In this example, think of a radio wave like a small speaker playing music, and the jammer as a large speaker. When the large speaker is off, you can hear the small speaker, but if you turn on the large speaker, the small speaker is still making noise, but you can no longer understand what is coming out of it. Additionally, please be aware that certain uses of jamming devices are illegal in different states and countries, and it is within your best interest to do research on your local laws regarding jamming devices, where to procure a jamming device, and how to optimally operate one. Hope this answered your question.

[@billbyrd9845]

@@chutemi. Thank you.

[@djcustoms6637]

How about instead of tricking people why don't you speak to them 😅 saves you money and time 😂 We used the trick of we are playing a quiz, hand over you phones then we put all the phones in the kitchen and never gave them back out until the end

[@tpulling83]

Can one make a 5th wheel or RV a faraday cage?

[@terryrussel3369]

Now tell us about why the radio reception increases as soon as your fingers come in contact with the radio. As kids we were fascinated by TV antenna.

[@cotdd]

because we are radios! :O

[@shadowreign6174]

I'm a 5TH Dimensional Being and we can change our vibrations and change our wave lengths. A silly fairday is no match for my powers Mwa Ha Haa jk!!

[@GigiBellia]

Exactly and dad put foil on the antenna to amplify the signal. I'm so confused 🤔

[@smittyvanjagermanjenson182]

@@GigiBellia could be the foils direct contact with the receiving antenna. The cage traps the signal, but wouldn't if the signal had a path to travel.

[@chutemi.]

Aluminum foil is a conductive material, as most metals are, and increase the surface area of the antenna by absorbing the electromagnetic signal (radio waves) and conducting it through the foil into the tv antenna. Think of the antenna like a target, and the radio wave like a bullet coming out of a gun. It’s hard to hit a small target, so adding aluminum foil to make the target bigger makes it easier to hit. Hope this answers your question.

[@barpoe]

Thank you for explaining this! Do the holes for a cell phone faraday cage have to be smaller for it to be effective still?

[@ruggedlifejewelry]

If they drop an EMP weapon can you use aluminum foil for protection?

[@nicolausthothmes2325]

Doubt it, I tried to use aluminum and it didn't block it's cell signal

[@cockle0979]

A galvanised bin with lid would work more effectively under most circumstances. However, don't forget to make sure that the gap around the inside of the lid has some kind of conductive material sealing it so that there is no break in continuity between the body of the bin and the lid.

[@manatarms79]

@@cockle0979 I was told it has to be ground, or it won't work.

[@COLDoCLINCHER37]

@@manatarms79 what does "ground" mean. I've been trying to find definition online but not very clear in context of the faraday system. How would you ground a system and why won't the cage work without it being grounded.

[@strtkempo]

@@COLDoCLINCHER37 a ground is grounding the circuit to the ground. An easy way is copper leads to the ground from the cage or just build the cage on the ground.

[@joffrecamacho5086]

flip the video over the vertical axis so that the reading over the board looks correct. great explanation btw, thanks for the video!

[@WillieChavezHopeLoveFaith]

P.S. I add double the layer too.

[@Uncommonsenses]

Would metal hardware cloth work? Would it be better to have the cage grounded?

[@n.w.aicecube5713]

could you make directional antenna?

[@geico1975]

Alumina foil and card board uh, they sale "Faraday Bags" on Amazon around $40, to keep a cell phone free of intrusion, but I could just wrap one up in alumina foil and do the same thing right?

[@steveprogamerlol2758]

Amazon: No, we have better faraday cage made by TOP people, we can assure you that it 100% works. LOL

[@BlackMamba-lt8oe]

Lunk

[@djcustoms6637]

Just turn the phone off ?

[@geico1975]

@@djcustoms6637 That won't work either, unless you can remove the internal battery, only doing that truly shuts a cell phone OFF.

[@djcustoms6637]

@@geico1975 Okay what phone stays on when your turn it off ? Also why do you need it completely off grid

[@Buonarotti10]

Great explanation. Did you notice the video is flipped?

[@rodrigoirigoyen6664]

I bet he used the front camera of his phone

[@diannajohnson-mochalkin6475]

Thank you! I’m not we’ll versed in Physics & it’s mathematical computations…. Please: how small would the holes need to be to shield 5G? What would that math be?

[@maryjohnson2878]

Great question!!

[@EA-tc6kb]

Should be smaller than 6 meters across. Lol don't be fooled by the 5G scare tactics it's harmless anyway.

[@kamalakrsna]

Experiment yurself Discover what works by experimntation Or dont have any holes Use tin foil etc Or pin size holes

[@djcustoms6637]

Why what are you doing that needs to block 5G. It's just the same concept just thicker mesh walls. We use it to block all outside connections to test Bluetooth devices that we developed and outside connections can mess up our sensitive tests

[@mikemonte2419]

are the holes neccesary? why or why not?

[@labscience8271]

No, they are not necessary. He only demonstrates that you can also have holes in the box, as long as they are smaller than the wavelength. For example, microwave ovens also have holes that allow short-waved light (400-700 nanometers) to pass throw them, while also blocking the long-waved (~12 cm long) microwaves radiation. Another example is the elevator, where your phone signals can get blocked without having holes in the elevator. So no, it's not necessary.

[@firstlast9813]

I'm an engineering student with a weird question. Is this where stealth paint comes from on military aircraft? And what's the difference between a radar targeting system and a speed gun?

[@rampoatchess2758]

No actually, they are not small paraday's cages. They actually absorbed part of the signal and sometime redirect them (at least the invisibility to radar technology on stealth aircraft) making the whole aircraft vanish or become a hard to hit target (when applied on ships, with special hull geometry, the ships would have the reflected signal on radar as small as a fishing boat. Radar could easily lock on and shot down small target aircraft if they cannot proper communicate with it, but no way in hell they would do the same with fishing boats, since wouldnt have proper communication)

[@mrwind7556]

in military, they use parade-day cage. * slow laughs *

[@couchguy427]

The paints absorb the "ping" from radar. So no information comes back indicating an object.

[@ruichen9044]

The speed of light is 3*10^8 m/s. Assume your radio frequency is 100Mhz = 10^6Hz, you only need a cage with holes smaller than 3 meters to block it. Why do you make the hole on the box so small? Correct me if I am wrong here please.

[@hareth3911]

If emp happens and hits our devices without faraday cage they will malfunction? Forever ?

[@Lesliealejandra706]

Hello 👋🏻 why do people say to put devices in a faraday cage now before an emp happens? They say it’ll protect your device and it’ll be usable? But we saw what happened when AT&T and some other networks went down. They’d be almost useless without wifi. Can you explain

[@w.harrison7277]

Based on your drawing it seems like it would be AMPLITUDE limited by the hole diameter, not wavelength. The time dimension defining wavelength is not a dimension at play in the "hole" in the foil.

[@ACGamerNetwork]

Weird question is a server rack, two solid walls on both side with grates on the back and front with holes smaller then the ones he showed here work as one and if it would does would it still work if what ever is connected inside is connected to wires outside

[@IDAHOJAKE]

I fix appliances. Same concept with microwave doors with the slotted small holes that block microwaves so that you can see inside safely

[@kayleighkuhlay]

I don't understand why it needs holes?

[@Nexus_Uprising]

Want to build one for my ps5 and xbox series x consoles

[@Dudefromoberder]

but how do magnetic fields and waves get affected by a Faraday cage?

[@BadgerMcblasty]

I’m researching on how to keep a inverter generator and solar panels safe from EMP/solar flares, tin-foiling the box they both came in and sealing them with metal tape may be the solution.

[@martinheath5947]

Should it be grounded or not?

[@plainspeaker123]

The holes actually act as an antenna! How can a aluminium foil box with holes actually block? I tested your contraption... the calls go through! But a fully wrapped phone is Faraday protected.

[@GigiBellia]

As a kid dad always put foil on tv antennas to get a better signal, how does this not amplify?

[@mikemonte2419]

maybe because the cardboard inside

[@truedox]

My guess is because the cardboard is insulating the radio from the foil.

[@nunyuh3693]

because it didnt go all the way around it and acts as a conductor

[@bingbung]

My guess is that it's because you created a conductive path with the foil and antenna, thereby essentially making your antenna bigger. But the radio is inside the box but not connected to it in a circuit. So the EM rays are caught by the Faraday cage and never get to interact with the radio.

[@chutemi.]

Aluminum foil is a conductive material, as most metals are, and increase the surface area of the antenna by absorbing the electromagnetic signal (radio waves) and conducting it through the foil into the tv antenna. Think of the antenna like a target, and the radio wave like a bullet coming out of a gun. It’s hard to hit a small target, so adding aluminum foil to make the target bigger makes it easier to hit. In this scenario, the foil is not connected to the antenna of the radio, so the waves that are absorbed have no way to conduct into the radio antenna. The foil surrounding the box acts more like an absorber, taking the energy from the radio waves and grounding it, preventing it from reaching the radio antenna. Hope this answers your question.

[@TheRockinGinger]

Excellent. Very informative!

[@johng.3740]

In essence the metal acts like a mirror for the electromagnetic wave the reflection is out of phase and cancels the incoming wave. Its more complicated than this because there is reflection, absorption, and attenuation, as the wave passes through. The most important factor is the penetration depth of the material depending on the properties of the material and the incoming wavelength. Longer wavelengths can penetrate more deeply into materials (including metals) than can shorter wavelengths. Light can't penetrate dry wall but WiFi can

[@un2ctdawmain267]

Ty.

[@iclutchrooftops5524]

does it have to be grounded for an generalized EMP?

[@djcustoms6637]

I think you'll have bigger problems if someone drops an emp then your phone getting bricked 😂

[@blueamenaa749]

Thank you for teaching us.

[@Scarletbull]

Question! ✋ … What happens if you make one without holes?

[@andrejrockshox]

works also for higher frequencies (smaller wavelenght)

[@BoyTsamba]

No grounding?

[@KoenZyxYssel]

Not needed for small stuff like normal radio signals. Against solar flares it's probably better to add a ground but I haven't done the maths.

[@NeuroPulse]

Will one such as this protect against EMP?

[@djcustoms6637]

I think you'll have bigger problems if someone drops an emp then your phone getting bricked 😂

[@bobmc1242]

Why does one need to stop their electronics from recieving a signal?

[@ZaxTheAl1en]

Solar Storm event.

[@sandybarbee8401]

You want to protect them from the PULSE . IT'LL FRY THEM !!!!!

[@WK_MERCURY]

Why are half the things in this video backwards?

[@missionman1914]

Brilliant explanation 👏🏾

[@joeyg5217]

would this help with hackers tracking your internet presence?

[@chutemi.]

No, use a secure internet network. If you’re forced to use public or unencrypted WiFi, I suggest using a VPN, which is a service that encrypts your traffic data. Mobile carrier connections are encrypted, preventing others from viewing your traffic. Additionally, most applications with large importance, such as banking apps/websites and even Google already encrypt data moving from apps and websites before transmitting it into traffic. Hope this answers your question.

[@djcustoms6637]

😂😂😂 no of course not ? How would this ever protect you

[@jarumia]

Nice video.. congratulations.

[@lindarees7015]

If the grids are all out,why do we need faraday cage?

[@aidanhogg5146]

So you are your own grid

[@patrickduncan346]

Starlink

[@BlackMamba-lt8oe]

@@patrickduncan346 🤣🤣🤣🤣

[@chutemi.]

A faraday cage blocks minute electromagnetic radiation, typically in the form of a radio wave. The intention behind the faraday cage is not to shield against electromagnetic pulses. If you are concerned with your electrical grid going down from an EMP, a very unlikely scenario, consider investing into a personal generator for your property. Hope this answers your question.

[@djcustoms6637]

I think you have bigger problems if someone drops an emp then your phone getting brickes

[@carolined5923]

And the antenna is inside the radio

[@zenaasura1769]

Lovely video. Now please next time do flip the video bc everything is backwards

[@SadieDelBigio-v7k]

Beautiful.

[@NikitaGarets]

How to save electronics from nuclear explosion?

[@brandenstangle320]

Thank You!

[@maximusmeridius1272]

Even if you do make a Faraday cage that protects your devices, you are still missing one key essential item that you will never get to make them truly worth investing time and money into. Preppers can't think far enough outside the box to realize what it is they are missing.

[@tjmmcd1]

So this is one of the TOP VIDEOS and provides, (as stated below the title), "everything you need to know about making a Faraday Cage", to keep your phone, computers and other vital electronics safe from an EMP attack? Folks, all you need is a cheap, small, pot metal garbage can or other metal container. You can check it out by putting your cell phone in it and then try calling it from another phone to see if it connects. Enough with this this aluminum foil covered cardboard box with holes in it.

[@sandybarbee8401]

Another example of the 11th COMMANDMENT !!! DO , Whatever it TAKES !!!!!!!

[@tdata545]

I DON'T GET CAMERAS SOMETIMES and why they flip text since it doesn't make logical sense. Since when we use our eyes to look at you in real life and see this in real life, text would be right ways around, so where is the flipping happening, and why do web cams suffer from it?

[@christinam1070]

Gonna make one to put my key fob in. Car jacking is on the rise.

[@galliboyz1380]

Great explanation Keep it up

[@WellWisdom.]

Yup. A lot of DIY people talk like it needs to be airtight.

[@sandybarbee8401]

??????????????????

[@ivancid7488]

The Lumineers

[@davidsavage4741]

I could hear it.

[@tobylunsford231]

The trailer park is set then haha

[@thebearablefrost7832]

I'm sorry my friend that box will Not protect anything you put in that box from an EMP

[@chutemi.]

A faraday cage blocks minute electromagnetic radiation, typically in the form of a radio wave. The intention behind the faraday cage is not to shield against electromagnetic pulses. Most EMP weapons are not designed to target specific households or private properties, but instead disrupt electricity production or distribution by targeting generation sites and distribution centers. Additionally, the majority of war or terrorism related electricity disruptions occur from physical munitions or explosives which directly destroy the site of electricity generation or distribution, exacerbating the period in which electricity is unavailable.

[@djcustoms6637]

I think you'll have bigger problems if someone drops an emp then your phone getting bricked 😂

[@thebearablefrost7832]

@@djcustoms6637 100%

[@WillieChavezHopeLoveFaith]

Bull, it didn't work, and a radio with a broken antenna. It sounding even better.

[@shashwatvishwakarma269]

Sone devices will work and some wouldn't because the cage dosent stop all the signals

[@chutemi.]

In this example provided, the use of the faraday cage only works when the receiving device is placed directly inside of the faraday cage without any conductive materials acting as a medium emerging from inside the cage. In this specific video, the proper usage of the faraday cage occurred from 0:28 to 0:32 where the vast majority of electromagnetic radiation was blocked by the cage.

[@benzen1128]

Is that why tin foil cap works (allegedly)? Hahaha~

[@racapinang]

Dope

[@shadowreign6174]

I'm a 5TH Dimensional Being and we can change our vibrations and change our wave lengths. A silly fairday is no match for my powers Mwa Ha Haa jk!!

[@CheekiScrubb]

were u high when u made this comment

[@djcustoms6637]

You know someone out there would believe you

[@briansmullen8390]

I'm a multi dimensional being having a human experience. Homo Luminous.

[@couchguy427]

@briansmullen8390 Sounds like a gay lightbulb.

[@davelogan77]

I just wrapped my cell phone in foil, and it worked fine. what gives?

[@ronilvaghjiani8785]

Better get a helmet for those rabbits

[@ccfmfg]

He's a Witch! Next He'll be saying the Earth is not flat and Saturday Night Live is Still Funny!

[@jonathanturner1500]

I always thought you should put the cage underground.

[@Imel520f]

please make video how to block 5G

[@barnabyjones7823]

Trees , rain , compact disc , lead paint

[@e.torch.8102]

Same principle; you're just blocking a different wavelength. So, if you do the math, you need a conductor with holes no bigger than 6mm.

[@djcustoms6637]

Why what are you doing that needs to block 5G. It's just the same concept just thicker mesh walls. We use it to block all outside connections to test Bluetooth devices that we developed and outside connections can mess up our sensitive tests

[@humannotanalien8675]

​@@djcustoms6637conspiracy nuts trying to block 5G evil signals

[@7xr1e20ln8]

If the hole size is smaller than 2 inches you are covered from 450MHz to 6GHz. The higher the frequency the smaller the whole has to be.

[@kayakbandits9894]

Put a cell phone in it and watch it work.

[@couchguy427]

Has to be made for that frequency. Did you listen to the guy speak words?

[@fishtailfred8686]

Also known as mobile homes.. : )

[@portman8909]

Good way to prepare for an EMP attack.

[@couchguy427]

Depends on frequency of the emp...

[@DirtyHarry000]

A steel shed would work as a faraday cage!

[@justinzubko3536]

Ah this is why they wear tin foil

[@seand4033]

So tinfoil hats do work

[@chutemi.]

The brain does not receive stimuli (information) from radio waves, and thus there is no purpose for a tinfoil hat. Additionally, tinfoil hats lack any substantial mathematical or scientific evidence proving that they are effective in blocking electromagnetic radiation from reaching the brain.

[@djcustoms6637]

Tinfoil suits and no not really

[@tjmmcd1]

This is what he's saying about the holes in the box. It's like he's DELIBERATELY providing us with USELESS calculations solely to make himslef appear smart, rather simply informing us about how to protect our electronics from an EMP. Listen, folks...ALL FM radio stations are between 88MHz (left side) and 108 MHz (right side). Station 88 has a wavelength of 3.4 meters, while station 108 is 2.8 meters. ALL FM radio stations have wave lengths of about.... THREE METERS. Why didn't he simply say that.... something 10 feet wide can't travel through a 2 inch hole? He also mumbles about the speed of light at the end. Folks, radio waves travel at the speed of light and have NOTHING to do with his calculations about something 10 feet wide not being able to fit through a 2 inch hole.

[@johnlantz3771]

If your box has holes and you don't have a buffering material like plastic, cardboard, carpet pad or something similar, your "faraday cage" will be useless. You really should research a topic, and know what you're talking about, rather than misleading people.

[@mikemonte2419]

to be fair he proved it with recordings of this video

[@chutemi.]

This isn’t necessarily true, as a faraday cage can work without any materials between the metal and receiving device, so long as the receiving device does not have a direct conductive connection to the cage. MITx Videos has a publicly available video on their KZbin channel titled “Faraday Cage” where you can view an example of a faraday cage constructed entirely out of conductive metals working without any “buffering material”.

[@chutemi.]

You may also be confusing a faraday cage for a dampening material, commonly lead or concrete, and sometimes water. Dense materials such as lead and concrete are able to block electromagnetic radiation, most famously ionizing radiation, by directly absorbing the energy from the electromagnetic wave.

[@bryonmason6330]

Thank you.

[@BeauJamesBradbury]

THANK YOU!