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Figure 1. The arrangement of hydrogen atoms (black circles) about oxygen atoms (open circles) in ice. Two hydrogen atoms (bottom ones) are close to the central oxygen atom while two of them (top ones) are far and closer to the two other…
The phrase banana republic was coined in 1904 by American writer O. Henry .
A Jake and Dinos Chapman fused mannequin piece from the exhibition Come and See at the Serpentine Gallery
An illustration of Cantor's diagonal argument (in base 2) for the existence of uncountable sets . The sequence at the bottom cannot occur anywhere in the enumeration of sequences above.