Recent content by zach88

Last night I put small copper rod into microwave. It did not spark. Why it did not spark?

Do you know the equation that can relate the energy produce by the spark with metal conductivity?

If I heat food using microwave, it is called dielectric heating right? What is it called if I heat metal? Is it induction heating?

Thanks a lot for the explanation. Last time I only know that dielectric term is used in capacitor only. :) Is it possible to have spark when I replaced the fork with spoon?

So, I can conclude, in order to successfully produce spark in the oven, I need at least two metal rod which are closer to each other right? Is there any other criteria or metal properties that I need to take into account? Actually, I was wandering whether every metal can produced the same...

So, it is the same as arc welding right? Gap is needed so that electron can jump to the workpiece in the form of arc. Which one is more accurate? electron or metal ion that jump to the workpiece? Ok back to my original question about microwave. I am not really understand about the gap. Let...

Thanks for the explanation. Now, for my next question. From the quote, it said that the tines of the fork respond to the electric field by producing high concentrations of electric charge at the tips which has the effect of exceeding the dielectric breakdown of air. Can you explain what is it...

Thanks for the respond Dave.. Actually I have read about that. I just need more clarification about that. From what I can understood from that, every metal will act as antenna and the effect of microwave depend on geometry of the metal. right? I am not understand how the metal can become antenna...

Sorry for interrupting this thread :) I am looking for simple explanation about why metals spark in microwave ovens. I never knew about this before until I came across with one video in youtube. Can anyone helps explain this phenomenon to me in a simplest way.

Recently I came across with one video in youtube where the guy in the video did experiment on microwave oven. He heat up aluminium foil in the oven and after a few second, the foil started to produce spark. This is my first time watching something like that. I never knew that when metal is heat...