How about the heat transfer being done in WATER ? http://en.wikibooks.org/wiki/Basic_Physics_of_Nuclear_Medicine/Attenuation_of_Gamma-Rays
500 kEV Gamma Ray Attenuation (per cm) Water 0.097 Iron 0.65 Copper 0.73 Lead 1.64 ( Lead : water = 16:1 ) Rossi has only said that the transfer is "partly lead". ----- Original Message ----- > I think the actual energy was lower. > It is not possible to transfer an energy of 120 kW via a small surface > into the water without producing steam bubbles. > It is for example possible to hold a glowing peace of iron under water > and it keeps glowing. This, because a thin layer of steam covers the > iron and isolates the heat from the water. Blacksmiths do this. >
