Can tin foil hats block anything? (2015)

The MIT paper linked in the second answer (<a href="http:&#x2F;&#x2F;web.archive.org&#x2F;web&#x2F;20100708230258&#x2F;http:&#x2F;&#x2F;people.csail.mit.edu&#x2F;rahimi&#x2F;helmet&#x2F;" rel="nofollow">http:&#x2F;&#x2F;web.archive.org&#x2F;web&#x2F;20100708230258&#x2F;http:&#x2F;&#x2F;people.csai...</a>) is a great read on its own.

Putting fashion aside, probably useful for both UV blocking (turn the hat into a hijab for better coverage) and also should reflect IR so reduce the chance of heatstroke when working in the sun. Disclaimer: avoid working&#x2F;exercise in hot&#x2F;humid conditions at all! Work at dusk&#x2F;dawn or even wait for a cool day.

They can block incoming interest from romantic partners.

Of course they can. They block a frequency range. Is that useful? Probably not.

Yes! Microwave attacks like against international embassy workers are FOILED by aluminum hats.<p><a href="https:&#x2F;&#x2F;www.nytimes.com&#x2F;2018&#x2F;09&#x2F;01&#x2F;science&#x2F;sonic-attack-cuba-microwave.html" rel="nofollow">https:&#x2F;&#x2F;www.nytimes.com&#x2F;2018&#x2F;09&#x2F;01&#x2F;science&#x2F;sonic-attack-cuba...</a>

What about tinfoil covered walls? Would living next to a couple of 4G&#x2F;5G towers be improved by tinfoiling the walls in that direction or a full faraday cage setup is needed?

The top answer is gold. Short, and worth the read; gave me a good laugh.

Like other hats, tin foil would be effective in preventing sunlight burning your skin and causing melanoma etc.<p>Would be a useful material to have in a desert island scenario.

probably not too many have actually used a room-sized tin foil hat, but i have - we used to have a faraday cage enclosing our coulter counter (measured cells in liquid) at university of london, back in the early 80s. room to sit in and do stuff. don&#x27;t know if this is necessary any more?

My longitudinal study has found that tin foil hats, when prepared and worn as directed, block 100% alien parasitical freqencies, 97.8132% of the attempts by FEDGOV to take over the minds of minunderstood scientists, and 2.091234% of the people who use verbal frequencies to ask questions about where to obtain their own tin foil hats.<p>d2. h4x02 f023v32

They can block water but not much RF

&gt; While the underlying concept is good, the typical foil helmet fails in design and execution.<p>8-)

They can block someone finding a mate and procreating

It&#x27;s a joke that as far as I know I am the only person finds funny but I&#x27;ve always thought that tin-foil hats need a grounding strap as otherwise they would act more like an antenna dish than a shield.

The approach of women. Very effective birth control. See [0].<p>[0] <a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;GI_glasses" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;GI_glasses</a>