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19 hours ago · Of the hundreds of people on the roof, at least 100 people fell four stories to the factory floor. 60 to 100 more people fell directly on top of the furnace, the surface temperature of which was estimated to be around 500 °F (260 °C). Fuel pipes were severed as a result of the roof collapse, spraying many victims with scalding hot oil.
19 hours ago · Properties Form and structure Gallium crystals Most metals are shiny and lustrous, at least when polished, or fractured. Sheets of metal thicker than a few micrometres appear opaque, but gold leaf transmits green light. This is due to the freely moving electrons which reflect light. Although most elemental metals have higher densities than nonmetals, there is a wide variation in their ...
