Uranium-235. Atomic number 92. 143 neutrons bound inside a nucleus that has existed for 703,800,000 years.

To reach criticality, you need 64 kilograms — the precise mass at which a chain reaction becomes self-sustaining. Below it, neutrons escape. At it, a single neutron becomes everything.

This work is a live fission simulation. Free neutrons drift through 92 electron shells toward the nucleus. Each collision triggers fission: the nucleus expands, two heavy fragments fly apart — krypton and barium — releasing 2 to 3 new neutrons, which trigger 2 to 3 more collisions. The criticality meter climbs. When it crosses the supercritical threshold, the screen flashes white.

This is the physics of Little Boy. Enriched to 80% purity at Oak Ridge, assembled at Los Alamos, dropped on Hiroshima on August 6, 1945, at 08:15 JST. 140,000 dead by December.

The simulation never ends. The chain reaction never stops.

우라늄-235. 임계질량 64kg. 이 문턱에서 중성자 하나가 모든 것이 된다. 작품은 핵분열 연쇄반응을 실시간 시뮬레이션한다. 자유 중성자가 핵과 충돌하면 핵이 팽창 후 분열되고, 크립톤·바륨 파편과 함께 새 중성자 2~3개가 방출된다. 임계도가 SUPER에 도달하는 순간 화면이 백색 섬광으로 물든다. 리틀보이 장치. 히로시마. 1945년 8월 6일 08:15. 사망자 14만 명. 연쇄반응은 끝나지 않는다. SINGULARITY: Event Horizon Series No.1 | YesOkLab Generative HTML5 · Live fission chain reaction · Responsive SINGULARITY: Event Horizon Series No.1 | YesOkLab