Science in 1933

The following scientific and technological developments from the year 1933 . These are not placed in the normal statements because it is often difficult to attribute them to a particular day or even month.
 * In Mérida is a well-preserved Roman amphitheater discovered and excavated.
 * Rotenone is discovered as an insecticide .
 * In Persepolis is a two palaces excavated into alleged by Xerxes and Darius .
 * Ragnar Lidén calculates that the ice from the Angemandal in Norway has vanished 8500 years ago. He argues that therefore the expiry date of the ice age is.
 * The English architect Gerald Brown takes a non- reflective display window out.
 * Patrick Blackett confirms the existence of positrons .
 * April 10 : The Italian Agrello improves the speed record for aircraft up to 692.529 km / h.
 * In Paestum, a Roman bathhouse unearthed.
 * Wander Johannes de Haas , Eliza Cornelis Wiersma and Hans Kramers reach a record-low temperature by 0.27 degrees Kelvin . Later De Haas even 1/800 Kelvin.
 * In Athens, the Academy of Plato excavated.
 * A Czech inventor finds an airplane with movable wings off.
 * It is found that influenza by a virus caused.
 * September 1 : Philips introduces the Bi Arlita lamp, a dubbelgespiraliseerde filament of tungsten used.
 * In Bento -river, Minas Gerais, is a diamond of 2,000 carats found.
 * September 30 : Georgi Prokofiev achieved with two others in a stratosphere balloon a record high of 19 kilometers.
 * In Germany is propane were used as cooking fuel.
 * In France, a new, highly lethal poison gas developed.
 * In Arnhem is a human skull found at least 4000 years old.
 * October 9 - A strikingly large stars rain occurs, presumably caused by the comet Giacobini II Zimmer .
 * The American pilots stratosphere Tex Settle and Mike Fordney reach a height of 21 kilometers.
 * At the University of Amsterdam is a special chair in Frisian language and literature set to occupy by Godard Gosses .
 * In Yugoslavia is the zakonik recovered. This Balkan-Code from 1349 was in the First World War was lost.
 * november: The reorganized Istanbul University reopened. Among the professors are some Germans who were expelled by the Nazi regime or being fled.
 * Tests with a leprosy - serum developed by the Swede John Reenstierna positively seem to fall out.
 * During excavations in Kargopol (northern Russia) is a settlement from the Stone Age discovered, as well as Roman and Arab coins.
 * Evarts Graham and Jacob Singer succeed in a patient with lung cancer throughout the left lung to remove without the patient to surgery or the complications dies thereof.
 * Francesco Pironti says, wrongly as it turned out, the Etruscan have deciphered.
 * Friedrich Curtius notes that in multiple sclerosis an inherited underlying cause.
 * The British Library bought the Codex Sinaiticus of the Soviet -regering.
 * Gray Turner succeeds in a patient, in whom due to cancer of the esophagus was removed from the skin of the chest to make a replacement esophagus.
 * Atebrin is discovered as a cure for malaria .