BillTre's latest activity
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BillTre replied to the thread History Biographies, History, Philosophy of Physics.What's all this mean? "cond-mat.dis-nn, cond-mat.str-el, cond-mat.supr-con, hep-th." Pretty sure I figured out this: "physics.hist-ph". -
BillTre reacted to .Scott's post in the thread History Going to the Catskills 1902 with
Informative.
Since the photo was taken in 1902, we know that panchromatic film was not used. So anything red on black or blue/violet on white will...