Microscale Thermite Reaction

(sciencedemonstrations.fas.harvard.edu)

25 points | by krunck an hour ago ago

7 comments

  • imzadi 7 minutes ago

    Does the second rusty ball really need to be a rusty ball since it is covered in foil?

  • krunck an hour ago

    Please try this at home. You all have rusty iron ball laying around, right?

    • fer an hour ago

      It wouldn't be weird for someone in the south of France to have a rusty pétanque ball.

    • jcims 40 minutes ago

      Hammer faces would work (def wear goggles!!!). Hit the face of the disposable one with a mixture of hydrogen peroxide, vinegar and salt and wait an hour.

    • xattt an hour ago

      Joining the thread to see where iron balls can be sourced.

      Some vendor on AliExpress? Those Lucky Iron Fish?

      • dgacmu 30 minutes ago

        This might work with old iron dumbbells (or modern iron kettle balls if left unpainted). Your gym might hate you for it though.

      • lstodd 44 minutes ago

        I'd guess exact form wouldn't matter. Wrap a hammer in foil and beat up something rusty.