What can you do with a plasma ball? the demonstrations. 

Thankyou for your support.

I'm so glad!

😄 thats unlikely to happen to me.

I might be missing your point, but aluminum is fairly electrically conductive for a metal.

Main reason is that my finger is round and dull and the skewer is pointy. This means that the skewer has a much stronger electric field. This means that charge leaks more, like stream, rather than all at once with my finger. This reduces the current flow and thus hurts less. On another note too is that what you feel is also the heat generated. Again much less with the skewer.

@@PhysicsHigh Thanks for the answer Paul.. still not sure how the skewer did not 'hurt' you, as the sparks were right there to see and you were touching them (through 'the metal stick') ... but will accept your answer as I don't believe I will test this.... "Like a stream..." who would've thought :).

Could it be due to how the charge is disapated? As when you touch it with a finger the charge is released all at once on a small point vs with the skewer when you hold it the charge is disapated through your whole hand?

Actually, I think it is due to the frequency at which the electricity is flowing. At such frequency, you wouldn't feel an electric shock, but at such voltage, it can burn your finger. So, to sum it up, at very high frequencies, you don't feel the electricity flowing through you, but with enough voltage you will burn your finger. That's why it doesn't hurt when holding any metals, but it does (because it burns) when using your finger (and any part of your body for instance)

@@juanfelipesantoyamartin5277 The high voltage ionizes the air. You get a spark which is pretty hot. So, if you touch with your finger, you get a tiny spot that burns and blackens on your finger. I know bc I have tried it.

Found no smell at all

Something is wrong with your senses. Hold your fingers to it for a minute and then smell your finger tips. I smell this sent every time i use my ball. The tentacles on mine are not that wild like yours is.

It's probably ozone, when you touch the dome you will create a small spark to your finger, very small but enough energy to split a few O2 (oxygen) molecules into O1 (ozone) molecules due to coronal discharge. Similar effect happens with laser printers, the inner mechanism creates a strong charge on the paper so that the powder toner sticks to it which is why printed pages from a laser printer will have a similar smell.

There is no "ouch" spark to my finger.

That is because it is a very small amount of current being passed. The voltage is still high enough to create a spark but there isn't enough current to penetrate the skin to trigger the nerves.