Joaquim Alves Gaspar, Lisboa, Portugal
|Picture of the day|
|A tape head cleaner cassette made of clear hard plastic. The plastic is birefringent and demonstrates internal stress as coloured patterns (photoelasticity) when photographed using cross polarisation. The polarising light source (an LCD monitor) has been rotated such that the polarising filter on the lens is oppositely oriented and so cuts out all the direct light, leaving a black background.|
The Portuguese poet Fernando Pessoa wrote that Newton's binomial theorem was as beautiful as the Venus de Milo.
I would like to add another masterpiece to the pair: Bach's Chromatic Fantasy and Fugue: 
I can't resist putting an alternative: Beethoven's last piano sonata: