Tides are usually explained by the moon, and that explanation is correct and incomplete.
The moon's pull produces a tidal range in the open ocean of roughly a metre. That…
Almost every emotional display a person produces can be manufactured. Smiles, frowns, gestures, tone of voice, posture — all of them are under some degree of voluntary control, which is…
Source: Wikipedia
Some archaeological claims are interesting because they are true. Others are interesting because of what happens to a suggestion once it escapes into general circulation.
The object usually called…
There is a category of object that has to be got right first time, and a large bell is among the more demanding examples.
It is cast in one piece…
The distinction worth holding is between measuring and comparing. A ruler asserts a length and can be wrong about it. The instruments below compare one thing against another, or against…
Almost everything strange about smell follows from two facts: it is chemistry rather than physics, and it takes an unusually direct route into the brain. Here are twelve consequences.
1.…