this post was submitted on 23 Feb 2025
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Gallium? It's solid at room temperature, but your own body heat will melt it, so you lie down on a solid block of metal and then slowly sink into a melting puddle in the middle of it. It's non-toxic and six times denser than water so you'd be really floaty on it too
It might act like a giant heatsink tho, making your body cool out as soon as it starts melting and creating proper surface contact. But chilling in 20ยฐC water is also not really an issue so i guess it depends on the thermal conductivity of the skin/gallium interface.
Just use something similar with a lower melting point. Mercury or cesium both do. You're welcome!
You'll completely float on mercury, and cesium does no good to your body. Like, at all.