Sintering metal explained Melting iron or nickel? Easy. But tungsten and molybdenum? Their melting points are so high that casting isn’t an option. Instead, they’re shaped using powder metallurgy and sintering, where metal powder is compressed and heated just below melting point. This process bonds the particles without turning them to liquid, preserving the heat resistance and strength of these refractory metals. #science #engineering #facts #metal #sintering #metal #metallurgy | vt.physics

How Did This Ladder Melt The Ground? A recent incident captured on video shows asphalt violently bubbling and charring, likely caused by a metallic ladder falling onto a live power line and creating a conductive path to ground. Despite the dramatic surface damage, the ladder remains largely intact. This can be explained by the difference in electrical resistance: aluminum, a highly conductive material, allows current to flow with minimal heating, whereas asphalt and concrete offer much higher re