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the sensor works on a magnetism system. The trigger is caused when a security tag is passed through between the sensors. The foil block's the signal from the tag being picked up. However, retailers are very aware of this and are now monitoring what customers do when they have tagged items in their possession. Police are now using part of the Theft act that says a person is going equipped to committee a crime (using/carrying the foil in a situation that the foil would not normally be used in)
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Can aluminum foil block house arrest bracelet?
no
What are some similarities between aluminum foil and aluminum screen?
what are difference similarities between aluminun foil and block woods
Any proof of better gas mileage by wrapping the oxygen sensors in aluminum foil?
No, does not work.
How do we block TV and cellphone radiation?
You can create a Faraday Cage with aluminum foil.
Does aluminum foil block X-rays?
X-Rays normally detect foil because it is metal.
What materials could block a wifi signal?
aluminum foil and copper wire--but how does it block a cell phone's connection??-_-
Is a aluminum foil a compound or elements?
Aluminum is element. Aluminum foil is made entirely of aluminum.
How do you block satellite signal?
Aluminum foil your house top to bottom then trash all your electronics
Is aluminum foil an element?
Aluminum foil is made of Aluminum, which is an element. So yes Aluminum foil is a element
Is mylar foil and aluminum foil the same?
Actually there is. Aluminium is a really sturdy block that doesn't break nowhere near as easily as aluminium foil. Aluminium foil is used for cooking and breaks very easily. I'm pretty sure there are more differences but that's all I know. Hope this helped. If it didn't, I'm sorry.
What an aluminum foil show on a x-ray film?
The practical answer for medical imaging is, no. The presence of aluminum foil would fully block a standard X-ray beam and make it impossible to assess underlying structures.
How does making aluminum foil demonstrate a metal's malleability?
The manufacturing process by which aluminum foil is made is a classic example of the malleability of metal. Malleability is the property of a metal that allows it to be worked or formed without it cracking. And aluminum is superb in this light. Aluminum foil is made from a big block of refined (pretty pure) aluminum, and this sucker is big. Hey, follow the link to the TechEBlog and watch the short video! It's got it all! From melting refined aluminum "pigs" to getting a big (big!) block of aluminum to rolling it out! Well worth the time and the (little) effort!
