5 ms·
As an Aussie living on the north side, the water spins the wrong way down the plug hole. It is only a tendency, but it happens often enough to not be a random d
by pcw7321 3y ago
As an Aussie living on the north side, the water spins the wrong way down the plug hole. It is only a tendency, but it happens often enough to not be a random direction. And the left/right thing ... It took ages to get used to the idea that in the northern hemisphere, your image in a mirror is reversed.
- defrost 3y agoWorth mentioning that the title is completely wrong; it is in fact a list of stuff that is backwards in the USofA.
- praptak 3y agoWater spin has been debunked, the Coriolis force is just too weak to have any noticeable effect over the minor non-symmetries of the vessel and random currents in the water
- vrighter 3y agomirrors don't flip images. Take a word written on a wall. Face it. point to the perpendicular wall on the side of the first letter. Now turn 180 degrees (imagine there's a mirror there) and look at the mirror on the opposite wall. Do the same thing, point to the perpendicular wall on the side of the first letter of the word. You are now pointing at the exact same wall as last time. The mirror didn't reverse anything, it's you who's backwards.
- bandrami 3y agoFeynman talks about this in his "Symmetry" lecture, and how there's no way to discern "left" from "right" without a shared artifact. (You can try to get clever and use a magnet, but there's also no way to discern magnetic north from south without a shared artifact, so that's ultimately the same convention.) It's like how any complex number can only be a±bi; a+bi doesn't actually mean anything by itself.