Category: history of physics

nemfrog: Star magnitudes. An introduction to …

nemfrog:

Star magnitudes. An introduction to astronomy. 1868.  Internet Archive

nemfrog: Star magnitudes. An introduction to …

nemfrog:

Star magnitudes. An introduction to astronomy. 1868.  Internet Archive

nemfrog: Planets compared in size to the sun….

nemfrog:

Planets compared in size to the sun. Elementary Science by Grades, Book Six. 1920

nemfrog: Planets compared in size to the sun….

nemfrog:

Planets compared in size to the sun. Elementary Science by Grades, Book Six. 1920

diaryofabrokegirl:

diaryofabrokegirl:

Phases

Einstein’s notes.

Einstein’s notes.

Einstein’s notes on electrodynamics in four di…

Einstein’s notes on electrodynamics in four dimensions, from his Zurich notebook.

Structure of the radium atom. Drawing by Niels…

Structure of the radium atom. Drawing by Niels Bohr, 1922.

“If one is a research worker, one mustn’t believe in anything too strongly; one must always be…”

“If one is a research worker, one mustn’t believe in anything too strongly; one must always be prepared that various beliefs one has had for a long time may be overthrown.”

Paul Dirac, quoted in The Strangest Man: The Hidden Life of Paul Dirac, Mystic of the Atom, p. 376. Graham Farmelo, Basic Books, 2009.

People in the 70s were so dramatic

People in the 70s were so dramatic