You can see water in liquid, solid, and vapor form - sometimes all at the same time (think a scene of a cold river, snow on the banks, with cloud cover). I am not sure that can be done with anything else.
Benjamin Franklin built a device that used static electricity to zap any visitor who touched his door knob. He also used it to perform various party tricks.
Buckminster Fuller, inventor of the geodesic dome, also invented a flying car- with inflatable wings!
I’m kind of partial to the idea that when you’re looking at starlight, you’re looking back in time. The farther away the star is, the farther back in time you’re looking.
I know a mnemonic for recalling p to 30 decimal places. This order of accuracy is on a par with measuring the distance to the Andromeda Galaxy and being correct to a single wavelength of light.
1 light year = 10[sup]13[/sup] km = 10[sup]16[/sup] m.
2 million light years = 2 x 10[sup]22[/sup] m
Wavelength of light ~ 10[sup]-7[/sup] m
hence distance to Andromeda Galaxy ~ 2 x 10[sup]29[/sup] light wavelengths.
The pistol shrimp stuns its prey with a bubble whose collapse creates a noise that can exceed 150 decibels and a temperature that exceeds that of the surface of the sun.
The universal background radiation that proved the big bang theory was discovered by accident. The researchers originally thought the static they detected with their radio telescope was due to pigeons nesting in it.
LSD’s use as a psychedellic was unintended. Doctor Hoffman was actually looking for a drug to treat migraines.
Heddy Lamar invented a jam proof way to radio guide torpedoes. Another invention of hers is used in cell phones.
Charles Lindbergh invented a mechanical heart. The device was made of glass and metal (so that it could be sterilized with steam). It was not made to be transplanted into the chest, just hooked up to the veins.
Can you provide a link to a picture you believe shows water vapor? I’d really like to see that, because I’m pretty sure I’ve never seen water vapor before, just as surely as I’ve never seen gaseous oxygen or nitrogen before.