1930
ID: 396
Gödel announces his incompleteness theorems at Königsberg conference, shocking the mathematical community
ID: 396
1930
ID: 399
Jacques Herbrand proves Herbrand's theorem, fundamental result connecting proof theory and model theory
ID: 399
1930
ID: 413
Kazimierz Kuratowski characterizes planar graphs (Kuratowski's theorem)
ID: 413
1930
ID: 1365
Federal Bureau of Narcotics (FBN) established - consolidating previous bodies under Commissioner Harry Anslinger
ID: 1365
1930
ID: 1366
Pope Pius XI's encyclical condemns eugenics
ID: 1366
1930
ID: 1367
John Watson promised: 'Give me a dozen healthy infants... and I'll guarantee to take any one at random and train him to become any type of specialist'
ID: 1367
1930
ID: 1368
144,102 local school boards (1 in 63 adults involved)
ID: 1368
1930
ID: 1369
Joseph S. Marcus's Bank of United States collapses in fraud scandal
ID: 1369
1930
ID: 1370
American Institute of Accountants issues first accounting principles bulletin - Beginning systematic effort to create consistent accounting rules
ID: 1370
1930
ID: 1371
Bank for International Settlements (BIS) established in Basel, Switzerland
ID: 1371
1930
ID: 1372
BIS officially opens operations in Basel
ID: 1372
1930
ID: 1373
Hjalmar Schacht resigns as Reichsbank President after promoting BIS idea to Montagu Norman
ID: 1373
1930
ID: 1374
Congressional Testimony: William Z. Foster states 'The workers... owe no allegiance to [capitalist flags]. The red flag is the flag of the revolutionary class.'
ID: 1374
1930
ID: 1375
Foster: 'Our party considers religion to be the opium of the people... we carry on propaganda for the liquidation of these prejudices'
ID: 1375
1930
ID: 1376
Shortwave radio broadcasting begins internationally
ID: 1376
1930
ID: 1377
Wilhelm Reich publishes The Sexual Revolution in German
ID: 1377
1930
ID: 1378
Frankfurt School relocates to United States as members (mostly Jews) flee Hitler's Final Solution
ID: 1378
1930
ID: 1379
Kurt Gödel proves incompleteness theorems - Mathematical proof that mathematical systems cannot prove their own consistency
ID: 1379
1930
ID: 1380
Polystyrene first produced commercially by IG Farben
ID: 1380
1930
ID: 1381
Wallace Carothers at DuPont begins research that leads to nylon development
ID: 1381
1930
ID: 1382
Prestressed concrete first used commercially in buildings
ID: 1382
1930
ID: 1383
Schacht conducts extensive speaking tour in United States promoting German reparations reduction (1930-1931)
ID: 1383
1930
ID: 1384
Sullivan & Cromwell maintains German cartel relationships - Dulles brothers facilitate Standard Oil-IG Farben partnerships
ID: 1384
1930
ID: 1385
Virginia raids - Sheriffs conduct systematic sweeps in Brush Mountain region; Over 8,000 Virginians sterilized
ID: 1385
1930
ID: 1386
People discovered stimulant effects by cracking open Benzedrine inhalers to access the drug
ID: 1386
1930
ID: 1387
Blessed Maria Pierina De Micheli - Holy Face visions in Milan - Christ asks for Holy Face Medal to combat communism
ID: 1387
1930
ID: 4250
Remington Rand develops line of accounting machines and calculators to compete with IBM in business market
ID: 4250
1930
ID: 5682
Hybrid corn revolutionizes agriculture - yields increase dramatically, U.S. production dominates world markets
ID: 5682
1930
ID: 1364
December 31, 1930
Pope Pius XI issues 'Casti Connubii' on Christian marriage - 'The love of husband and wife... partakes of the eternal divine love'
ID: 1364