Artist Isao Hashimoto created an animation showing every nuclear test between 1945 (the first Manhattan Project test, called Trinity) and 1998 (a test in Pakistan). The total number? 2,053, according to the Stockholm International Peace Research Institute. Note that this number doesn't include the rumored North Korean tests in 2006 and 2009. While the video starts slowly, by the late 1950s things are getting intense. Testing peaks in 1962, when over a hundred blasts are shown. You can follow the running tally at the top of the screen to see who's testing, when, and where. After twelve minutes, the video goes silent and runs through the tests by country of origin, so you can see who's blowing up what, where.
Hashimoto said (emphasis added): "This piece of work is a bird's eye view of the history by scaling down a month length of time into one second. No letter is used for equal messaging to all viewers without language barrier. The blinking light, sound and the numbers on the world map show when, where and how many experiments each country have conducted. I created this work for the means of an interface to the people who are yet to know of the extremely grave, but present problem of the world."
And here's video of Trinity, the test on July 16, 1945 which prompted Robert Oppenheimer to quote the Bhagavad Gita: "Now I am become Death, the destroyer of worlds."
And here's a photo of Trinity. According to Wikipedia:
The Trinity explosion, 16 milliseconds after detonation. The fireball is about 600 feet (200 m) wide. The black specks silhouetted along the horizon are trees.