Uncertainty values denote one standard deviation, except isotopic composition and standard atomic mass from IUPAC which use expanded uncertainties.

Uncertainty values denote one standard deviation from the norm, except for the isotopic compositions and standard atomic masses from the IUPAC that use larger uncertainties.

They include paintings, drawings and collage, and show an artist using abstraction's strangeness and uncertainties to think his way into his creative place in the world (Cotter).