“What materials best insulate the entire body from the reduction of warmth? Tests display that an open-weave cotton cloth has the smallest insulation value. A dense cotton cloth provides fairly a lot more defense, and wool continue to a lot more. But insulation value declines considerably when materials are moist for damp cotton flannelette, the warmth reduction is larger than when the [skin] has no deal with at all. The analyze indicates investigate for winter clothing: underclothing that will not quickly soak up water, garments that will hold quantities of air in exceptionally little bubbles, and quilted outfits made of a batting of hen feathers and cotton.”

Scientific American, March 1951

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