Articles relating tonuclear weapons testing, experiments carried out to determine the effectiveness, yield, and explosive capability ofnuclear weapons. Testing nuclear weapons offers practical information about how the weapons function, as well as how detonations are affected by different conditions; and how personnel, structures, and equipment are affected when subjected tonuclear explosions. However, nuclear testing has often been used as an indicator of scientific and military strength, and many tests have been overtly political in their intention; mostnuclear weapons states publicly declared their nuclear status by means of a nuclear test.
The first nuclear device was detonated as a test by the United States at theTrinity site in New Mexico on July 16, 1945, with a yield approximatelyequivalent to 20kilotons ofTNT.