Thanks, Fernando. Just two illustrating examples which everybody knows:

In winter, a metal table feels colder than a wooden table of the same
temperature, because metal conducts heat much better then wood.

In summer, you burn your feet by walking through hot sand a the beach,
but not by walking over wood of the same temperature. Same reason.


BTW, this is also the reason why it's no big deal to walk over red-hot
coal, especially if you walked through wet grass before. If you try it
with Charcoal, that is. But please don't try it with mineral coal!

Stefan