Mr Blotty: What are the constituents of ball-point ink? What solvent
ensures that the ink remains fluid indefinitely while in the pen but does not
smear once it is on the paper?
Boring question: Why does making a bullet spin by 鈥渞ifling鈥� the bore of a
rifle barrel make it travel with greater accuracy?
All shook up: After a can or bottle of carbonated liquid has been shaken
violently, is it possible to calculate how long it should be left in order for
it to reach equilibrium and not deposit its contents over the drinker?
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Fizz ice: Sometimes, when take a bottle filled with liquid (preferably
beer) out of a cold refrigerator, opening it results in the liquid freezing.
Why?