Blog recommendation: Skulls in the Stars

Every year I am getting more interested in the history of optics, particularly during the XIXth century and first half of XXth century. The blog Skulls in the Stars  by Gregory J. Gbur contains really interesting posts about the history of optics during this period, with very rich and enriching explanations  than are not found in optics books.

For François Arago fans like myself I cannot avoid recommending the following three posts: