This video was the first thing that popped into my head after reading the headline. I wonder if he saw it once and just internalised “nobody understands it”.
Compression of any kind creates heat. In the case of ice, if the surface temperature is warm enough, the heat caused by compression is enough to melt it. Not all of it, but a thin layer at the top so you slip and fall on your ass.
While that may contribute to the slipperiness of ice in certain circumstances, we know that ice is still slippery even when the compressive force is unable to melt the ice, even a thin layer. For example, we’ve studied ice at temperatures and pressures where liquid water doesn’t form.
I don’t remember the details exactly, but in the (most common) crystalline arrangements of H20, at the surface/edge of ice the individual molecules don’t have all their crystalline “partners”, so they can still shift around to varying degrees, which makes ice slippery even when none of it can / does melt–all of the molecules are part of at least one crystal.
came here to post this hahaha. I still use “X does this, Y does that – You can’t explain that.” sometimes. Just something about the hubris of ending it with pointing at the person and saying you can’t explain that, I love it just as much today: https://youtu.be/NUeybwTMeWo?t=11
Feynman moment.
This video was the first thing that popped into my head after reading the headline. I wonder if he saw it once and just internalised “nobody understands it”.
Holy shit something just clicked for me!
“Ice is slippery, because water expands when it freezes” -->so when compressed it…
Granted it’s not really something I thought of on that level being from the equator.
Compression of any kind creates heat. In the case of ice, if the surface temperature is warm enough, the heat caused by compression is enough to melt it. Not all of it, but a thin layer at the top so you slip and fall on your ass.
It doesn’t create heat, it compresses it.
Tbf, any compression heats. Even with heat pipes.
While that may contribute to the slipperiness of ice in certain circumstances, we know that ice is still slippery even when the compressive force is unable to melt the ice, even a thin layer. For example, we’ve studied ice at temperatures and pressures where liquid water doesn’t form.
https://www.youtube.com/watch?v=20zyW0qoSTE
I don’t remember the details exactly, but in the (most common) crystalline arrangements of H20, at the surface/edge of ice the individual molecules don’t have all their crystalline “partners”, so they can still shift around to varying degrees, which makes ice slippery even when none of it can / does melt–all of the molecules are part of at least one crystal.
Tide goes in, tide goes out. Never a miscommunication. You can’t explain that. You can’t explain why the tide goes in.
Tide goes in, wash cycle begins, wash cycle ends, dirty water drains out.
Yes I can. Tide goes in because tide goes out.
Yeah ok mr smart guy, if that’s why the tide goes in, then explain to me why tide go out, if you even can
Because it wants to meet friends.
came here to post this hahaha. I still use “X does this, Y does that – You can’t explain that.” sometimes. Just something about the hubris of ending it with pointing at the person and saying you can’t explain that, I love it just as much today: https://youtu.be/NUeybwTMeWo?t=11
It’s a blast from the past. Seemed like it was the turning point in his career. Circling the drain so to speak.