~Three Energies of Atomic Bomb: No2.HEAT~"75Years Hiroshima"Dr.SOKO DAY7/50

〜HEAT,3000-4000℃ on ground〜

Heat  burned people. It is the specific energy that Nuke can emit.
The center temperature of Atomic bomb just before exploding was over 2.5million degree Celsius. When its shock wave hits surrounding air,it appears as a pale white fireball, and after 0.2 seconds the surface of the fireball became 6000 degrees and the diameter was 310 meters.

Two seconds later, 90% of all heat rays were emitted, and many people were deeply burned. At this point, a large amount of gamma rays, which is radiation, is emitted and reacts with the atmosphere, so that the sky looks purple.

"Wow, Beautiful!"

Some were fascinated by the sudden appearance of a fireball and the changing color of the sky. People who watch the fire ball will suffer deep burns to their eyes and face due to the heat rays that instantly and unavoidably came after this.

It is estimated that the temperature of the ground surface on which people were was raised to over 3000-4000 degrees. The surface temperature of the sun is about 6000 degrees, and the melting temperature of iron is 1500 degrees. Even for a moment, the copper roof of the current Atomic Bomb Dome melted and fell off. This heat ray was responsible for 20-30% of deaths of the atomic bomb in Hiroshima.

Generally speaking, to have burn with blisters more than 30% (20% in children) area of a body surface means a high risk of death, and to have burn with discoloration and charcoal of the skin more than 10% (5% in children) area of a body surface means at a high risk of death. If you wake up more than that, you are likely to die. There were many people who had deep burn of a life-threatening level.

Heat and Radiation

In Hiroshima and Nagasaki, it was a hot summer. So people wore light cloths. Some people were working off their clothes. Many of the people who worked outdoors, where there are no buildings that block the heat rays, instantly have charcoal-like skin. People who looked up at the silver plane and stared at the fireball, not only burned their faces, but some got blind. The intensity of the heat rays caused awful trauma to people. Moreover, their mental damage with the injury cannot be expressed in words.

Their deep burn are not same as a usual burn. Because people were exposed to radiation as well. Their recovery does not proceed because movements and functions of their organs and function of immunity get down. Many of patients had pus with their wound. Maggots were well seen on wounds. After all, pathogens went through people's body, a lot of patients with burn died. 

Treatment of Burn

If you do not wash a burn wound, it must get infected. Burn is easily get worse and influence on a whole body sometimes.

The only way to wash the wound at the hypocenter is to wash it with water that is contaminated with radiation. It may be possible that this resulted in increased internal exposure. However, washing wounds can prevent infectious diseases, so washing wounds with water from a broken water pipe in such a situation is definitely not a mistake.

Water from Broken Water Pipes

Rather, considering the risk of infection, it is necessary to wash the wound, and even if there is some radiation contamination, it is necessary to wash the wound with a large amount of water flowing from the tap water. The effects of radiation may be smaller when using water from a broken water pipe rather than drinking water from a river or reservoir that radiation-containing ash, etc. However, there are few literatures on securing a water source for the hypocenter and safety of water pipes, and I think it should be considered in the future.

On the other hand, heat rays simply cause a fire. 

A heat of 3000-4000 degrees ignited a house made of wood. A large number of people who were trapped under the houses destroyed by the blast were killed by this fire.