Niboy Posted November 19, 2017 Share Posted November 19, 2017 i stumbled on a video on the internet (https://youtu.be/MBeMcgars_w), a stone that melts an iron nail in a few seconds. in another video, it showed there that the iron nail after being exposed to the stone/rock became very brittle. whats the explanation? please help. someone asked me this and i cant give an answer. thank you. Link to comment Share on other sites More sharing options...
Strange Posted November 19, 2017 Share Posted November 19, 2017 I assume the"nail" is made of some sort of frozen mixture of water and the stone is warm. Link to comment Share on other sites More sharing options...
Moontanman Posted November 19, 2017 Share Posted November 19, 2017 30 minutes ago, Strange said: I assume the"nail" is made of some sort of frozen mixture of water and the stone is warm. The nail is made of gallium, the rock is warm... Link to comment Share on other sites More sharing options...
Strange Posted November 19, 2017 Share Posted November 19, 2017 2 minutes ago, Moontanman said: The nail is made of gallium, the rock is warm... I wish I had thought of that! Link to comment Share on other sites More sharing options...
Sensei Posted November 19, 2017 Share Posted November 19, 2017 (edited) Or nail is made of tin, and rock is warmer than 231.9 °C (that would be the easiest way to make this trick, as tin is widely available on the market). Or nail could be made of Mercury below -40 C. It has melting point ~ -38.83 °C. Or nail could be made of Sodium-Potassium NaK alloy. Melting point ~ -12 C. (that would explain why he is holding nail with gloves, to not start melting it by hand) Edited November 19, 2017 by Sensei Link to comment Share on other sites More sharing options...
John Cuthber Posted November 19, 2017 Share Posted November 19, 2017 11 minutes ago, Sensei said: Or nail could be made of Sodium-Potassium NaK alloy. Melting point ~ -12 C. I rather doubt it could. Cooled below -12 it would condense water from the air as ice. When it warmed up + melted the reaction would be rather obvious- probably leading to combustion. Link to comment Share on other sites More sharing options...
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