1 January 1938President of SwitzerlandJohannes Baumann
Begins a one-year term as President of the Swiss Confederation.
Historical records for Switzerland in 1938, rendered directly from the World History Database and ordered by month, day and event.
Begins a one-year term as President of the Swiss Confederation.
Zwickys colleague Walter Baade proposed using supernovae as standard candles to estimate distances in deep space
Publishes work deriving approximate equations of motion for gravitating bodies from general relativity.
Publishes The Evolution of Physics with Leopold Infeld for a broad readership.
When Edwin Hubble discovered a linear relationship between the distance to a galaxy and its redshift expressed as a velocity, Zwicky speculated that the effect was due not to motions of the galaxy, but to the slowing down of photons
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