Nothing in particular, it's an arbitrary starting point. But that's really not a good reason to knock it.
Does water actually freeze at 0 celsius? It depends on the air pressure, right? I guess 0 celsius is the freezing point of water at sea level, but air pressure's not consistent at all. I guess maybe it's the temperature water freezes at the average air pressure at sea level? I assume that's the case.
The point I'm trying to make is the Celsius isn't super rock solid either, and it really doesn't affect anything if water freezes at 0 or 32 degrees. The best argument for celsius is that it's standard, but that doesn't make necessarily make it better.
If we really cared about having a rock-solid starting point, we'd use Kelvin because you literally cannot go below 0.
It's one of those things that truly and honestly just doesn't matter. Celsius makes more sense if you think about water freezing at 0 and boiling at 100, but beyond that it really doesn't make a big difference.
Nothing in particular, it's an arbitrary starting point. But that's really not a good reason to knock it.
Does water actually freeze at 0 celsius? It depends on the air pressure, right? I guess 0 celsius is the freezing point of water at sea level, but air pressure's not consistent at all. I guess maybe it's the temperature water freezes at the average air pressure at sea level? I assume that's the case.
The point I'm trying to make is the Celsius isn't super rock solid either, and it really doesn't affect anything if water freezes at 0 or 32 degrees. The best argument for celsius is that it's standard, but that doesn't make necessarily make it better.
If we really cared about having a rock-solid starting point, we'd use Kelvin because you literally cannot go below 0.