But I think the laws of thermodynamics will prevent preservation of whole heads, let alone bodies. (And then there’s all the other issues with cryo like what happens when the clinic goes out of business.)

[–] Valmond@lemmy.world 1 points 3 weeks ago (1 children)

There is nothing preventing a rapid cooling the problem is to get water removed/replaced because it creates ice crystals. We can already do this somehow.

The problem with thawing is how do you heat it uniformly.

I have never heard about the laws of thermodynamics would hinder this, any information gladly accepted.

And as for the business, well it's better than dying, at least there is a chance!

[–] Semi_Hemi_Demigod@lemmy.world 5 points 3 weeks ago (1 children)

It’s related to thermodynamics but it’s basically the square-cube law: the bigger you get the more your internal volume grows compared to your size.

Heating something large evenly is very difficult because of this. It’s why burritos are lava on the outside and icicles on the inside out of the microwave, or why you need to cook a large roast slowly.

[–] Valmond@lemmy.world 3 points 3 weeks ago (1 children)

Hopefully we won't use basic microwaves then :-)

I read about nano particles spread out in the tissues, made to vibrate (probably by EM) to heat up larger portions uniformly.

It's just a matter of time and effort.

[–] Semi_Hemi_Demigod@lemmy.world 2 points 3 weeks ago

Nanoparticles might do the trick!