|Hiroshima Peace Memorial Museum
|Yoshijima, Funairi, Kan-on areas
|Distance from the Hypocenter (m)
|Campbell-Stokes Sunshine Recorder recording paper
Distance from hypocenter: approx. 3,630m
This recording paper for a Campbell-Stokes Sunshine Recorder was placed on the roof of the Hiroshima District Meteorological Observatory on August 6, 1945. The mushroom cloud rose at 8:15 a.m. A few minutes later, the sun that had shown its face for a short period that morning was shrouded by thick smoke due to fire. At 2:45 p.m., the black rain clouds dispersed, and sunlight returned about 10 minutes later.