Warning, the following entry contains mathematics and science. If you are not a geek, please do not read on.
SPAGHETTI INCIDENT - True
I wasted half a packet of Barilla No.7 in my pantry and could not figure out why. But today, the Rheologeewoldt* shed light to this problem by giving me a recent article from Physical Review Letter. It is about how spaghetti snaps into pieces. As some of you might have observed, spaghetti does not break into two pieces when you bend it, most of the time it snaps into three to ten pieces. Apparently this was a problem which confounded the great Feynman himself. So recently some nerds in France has managed to model this phenomenon. The mechanics behind this is so: At the instant of the first fracture, the suddenly freed end suddenly realizes that it should have no curvature (check your undergrad structures notes), while the remainder of the spaghetti has not had time to react and thus remains in a curved shape. The information that the end is freed travels along the spaghetti in the form of a burst of flexural waves and generates a local concentration in curvature, causing another breakage further downstream, which generates yet another burst of waves, causing another breakage…
This was the first myth I looked at which actually turned out to have some truth in it. While we are on this topic, let me waste your time on a few more of my silly home experiments, unfortunately, none of the original claims seem to have any scientific basis at all.
COLD WATER BOILS FASTER THAN HOT / HOT WATER FREEZES FASTER THAN COLD - false
Matlove and his girl brought my attention to this myth and commissioned me to investigate the truth in it. I did some experiments at home and found this myth to be completely bogus, at least in the conditions of my kitchen. I expect the kitchen conditions to be similar to mine, so don’t try to be smart and freeze hot water.
KITCHEN SINK VORTEX - false
Some people think that the sink vortex always spin clockwise in the Northern Hemisphere because of the coriolis effect. This is not true, the coriolis force is so small, to see it, you will have to leave the water in an extremely still environment for days to rid it of any initial eddies.
SCREAMING LOBSTERS - false
Some redneck once told me lobsters scream in pain when dunked into boiling water. That’s bogus, lobsters has no vocal chords, apparently that hissing noise is the heated air trapped under the shell expanding and whooshing out of the gaps.
In fact lobsters feel no pain, they don’t have a brain.
*Rheologeewoldt is another excellent friend. For a living, he pleasures snails to obtain their fluids.