those gold/silver emergency blankets: do they really work, and how?

Question

those gold/silver emergency blankets: do they really work, and how?

In: 3859

Answer 1

Haven’t seen it mentioned yet but they need to be reasonably tightly wrapped around someone to prevent heat being lost by conduction to the air moving around you. When you see footage of someone with a silver blanket just draped over their shoulders, it’s not doing much