An Electromagnetic Pulse weapon is effectively a nuclear bomb or missile detonated high above the Earth.

Source: https://www.dailymail.co.uk/news/article-12534893/How-Putins-EMP-nukes-trigger-collapse-society-Unstoppable-blast-space-cut-water-energy-leaving-citizens-starve-die-resulting-panic-fuelled-violence.html?ns_mchannel=rss&ns_campaign=1490&ito=1490

Even the Trinity nuclear bomb test was shot completely with practical effects, leading to a sensational viewing experience that feels more real than most films.

Source: https://www.bupipedream.com/ac/movies/139086/oppenheimer-is-unlike-any-other-biopic/

Here's what a nuclear bomb actually looks like up close.

Source: https://www.buzzfeed.com/hannahmarder/absolutely-fascinating-photos

It's a bit like giving people a template to build a nuclear bomb."

Source: https://www.bbc.co.uk/news/technology-66238004?at_medium=RSS&at_campaign=KARANGA

It’s highly unlikely that a film director would receive permission to detonate a nuclear bomb, even for the sake of accuracy.

Source: https://www.comingsoon.net/guides/news/1305178-oppenheimer-bomb-scene-did-they-drop-a-real-nuke-atomic-bomb-movie

New Mexico was the birthplace of the nuclear bomb.

Source: https://thetablet.org/us-group-marks-1945-atomic-bombings-urges-abolishing-nuclear-weapons-and-building-better-world/

“O cursed creator of the nuclear bomb, why do you invite the day of judgement?” she sang on the track “Bom Nuklir”.

Source: https://www.kuwaittimes.com/hijabi-indie-mothers-embraced-by-young-indonesian-music-fans/

On page 152 the Manhattan Project, developing a nuclear bomb for war on Germany, when Germany surrendered, went on developing the bomb because "it was too late to change their minds."

Source: https://www.opednews.com/articles/The-Shortest-History-of-Wa-History_History-Ancient_History-Preshistory-Prehistoric-231005-15.html

The cloud of radiation from a dirty bomb could be dispersed within a few blocks or miles of the explosion, whereas a nuclear bomb could spread thousands of square miles.

Source: https://www.bbc.co.uk/news/health-65595250?at_medium=RSS&at_campaign=KARANGA

Their god is more almighty than a nuclear bomb.

Source: https://www.counterpunch.org/2023/05/17/the-cosmic-dance-of-the-sun-and-climate-change/

The USA, at the time the only country with a nuclear bomb, told the Soviet leadership NO, and today Japan is a united country.

Source: https://japantoday.com/category/politics/japan-raps-russia%27s-%27illegal-occupation%27-of-disputed-islets-in-rally

US Air Force personnel stand in a pit dug to recover a section of a nuclear bomb that fell in a Wayne County field in 1961.

Source: https://jocoreport.com/jan-22-ceremony-to-commemorate-1961-b-52-nuclear-bomb-accident-near-goldsboro/