I recently watched a docuseries on Netflix (now restored in full color 😂) and in one of the episodes, they showed pictures of shadows etched into the ground? How is this possible? Aren’t shadows an absence of light? Did the ground in the surrounding area burn and change color making the shadow look like it was etched in?
In: Physics
Bright light can fade things, like carpets and drapes. Super bright light with lots of UV can fade things that are much tougher to fade. When your shadow keeps the flash from the bomb from doing that, you leave a permanent shadow. The sunlight will continue to fade the surface, but uniformly like it did before.
Basically, yes. The initial flash was bright enough to bleach stone and other surfaces that survived the blast, but if there was something in the way to cast a shadow the surface wasn’t bleached there. There are some claims that it’s carbon left behind from vaporized bodies, but the shadows were left by items that survived the blast as well, so it wasn’t that.
The intense heat of the atomic explosion caused what are called nuclear shadows. The blast changed the colors of surfaces like steps, walls, and pavement because of the UV radiation that was emitted. … Those vaporized in the blast left imprints behind so the legacy of Hiroshima cannot be forgotten.
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