Motorists have been stranded on a major interstate in Virginia since last night

Re:Motorists have been stranded on a major interstate in Vir... by bix6 on Tuesday January 04, 2022 @05:01PM (#29801182)

Emergency (foil) blanket saved my life one night when I was freezing. I carry one more often than not now. Minor space/weight penalty to avoid hypothermia.

Camelbak 3L comes with me on all road trips but I’m considering a permanent water tank in my car.

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Re:Motorists have been stranded on a major interstate in Vir... by TedShiller on Tuesday January 04, 2022 @05:29PM (#29801636)

How do foil blankets work actually? Doesn’t metal foil transmit heat very well which would make them a bad blanket to trap heat?

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Re:Motorists have been stranded on a major interstate in Vir... by nerfhammer on Tuesday January 04, 2022 @05:37PM (#29801775)

It's actually mylar that they're made of.

https://en.wikipedia.org/wiki/BoPET

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Re:Motorists have been stranded on a major interstate in Vir... by Cerium on Tuesday January 04, 2022 @07:55PM (#29803377)

I spent a night in the woods with a Mylar foil blanket. It blocks wind and reflects the heat back to you. When it came loose I would immediately wake up cold and reposition the blanket. The thermal effect was instant on and off.

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Re:Motorists have been stranded on a major interstate in Vir... by jwagenet on Tuesday January 04, 2022 @05:42PM (#29801847)

I believe besides acting as a wind barrier, the foil reflects heat internally. They would not be effective in direct contact with skin and another surface.

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