Women Boxing on Roof, New York City, 1930.

Rare Historical Photographs:

The Solvay Conference, founded by the Belgian industrialist Ernest Solvay in 1912, was considered a turning point in the world of physics. Located in Brussels, the conferences were devoted to outstanding preeminent open problems in both physics and chemistry. The most famous conference was the October 1927 Fifth Solvay International Conference on Electrons and Photons, where the world’s most notable physicists met to discuss the newly formulated quantum theory. The leading figures were Albert Einstein and Niels Bohr.

This conference was also the culmination of the struggle between Einstein and the scientific realists, who wanted strict rules of scientific method as laid out by Charles Peirce and Karl Popper, versus Bohr and the instrumentalists, who wanted looser rules based on outcomes. Starting at this point, the instrumentalists won, instrumentalism having been seen as the norm ever since.

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The intersection of Steep and Trenchard Street, Bristol, England, 1866 and now.

Visit an older America here.

https://hdl.loc.gov/loc.pnp/fsa.8c02008

A mystery from Shorpy’s.

Phyllomedusa sauvagii, found in Argentina, Bolivia, Paraguay, and Brazil.

photo: Viktor Macha.

Turin, Piazza San Carlo: Giovanni Michele Graneri, Market at Piazza San Carlo, 1752, Museo Civico d’Arte Antica, Torino above Photograph 2017. (Click on image for larger version.)

Bugatti Type 51, 1931