Brine Shine

Study of waves, wave-crests and foam by the Armenian artist Ivan Aivazovsky (1817-1900)

Aivazovsky was a citizen of Imperial Russia whose name is Հովհաննես Այվազյան in Armenian and Иван Айвазовский in Russian.

Kaufkopf

Hans Holbein the Younger, Bildnis eines jungen Kaufmannes (1541) / Portrait of a Young Merchant


Previously pre-posted portrait posts:

Fur King Hal — Holbein’s portrait of Henry VIII
Anne’s Hans’ — Holbein’s portrait of Anne Cresacre

Cornuscopia

Cornelis de Heem, Stilleven met fruitmand / Still Life with Basket of Fruit (c. 1654)
(click for larger)


Note: The title of this incendiary intervention is a blend (or mash-up, as the non-conformist maverick community might say) of Latin cornucopia, “horn of plenty”, and Greek scopos, σκόπος, “seeing”.

Eyeway to Shell


Previously pre-posted:

Eyeway to Ell — a better paronamasia than this one…

Ruff Stuff

Zelfportret (1601) by Joachim Wtewael (1566-1638) (pron. roughly OO-tuh-vaal), as seen in Phaidon’s 500 Self-Portraits


Previously pre-posted:

She-ShellPerseus Rescuing Andromeda (1611) by Wtewael

Rock’n’Roll Suislide

Q. Each face of a convex polyhedron can serve as a base when the solid is placed on a horizontal plane. The center of gravity of a regular polyhedron is at the center, therefore it is stable on any face. Irregular polyhedrons are easily constructed that are unstable on certain faces; that is, when placed on a table with an unstable face as the base, they topple over. Is it possible to make a model of an irregular convex polyhedron that is unstable on every face?

Portrait of Luca Pacioli (1495)

Portrait of Luca Pacioli (1495)


A. No. If a convex polyhedron were unstable on every face, a perpetual motion machine could be built. Each time the solid toppled over onto a new base it would be unstable and would topple over again.

 — From “Ridiculous Questions” in Martin Gardner’s Mathematical Magical Show (1965), chapter 10.