spark...

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photon
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spark...

Unread post by photon » Thu Feb 24, 2011 4:43 pm

while welding, spark is seen and quickly it disappears.why??? :o
what is a spark?is it a form of energy (like fire)???
Try not to become a man of success but rather to become a man of value.-Albert Einstein

tanvirab
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Re: spark...

Unread post by tanvirab » Fri Feb 25, 2011 12:20 am

Electrons traveling from one place to another is a spark. Lightning is a kind of spark.

photon
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Re: spark...

Unread post by photon » Fri Feb 25, 2011 11:10 am

spark moves from the welding place.how it can be explained?
Try not to become a man of success but rather to become a man of value.-Albert Einstein

tanvirab
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Re: spark...

Unread post by tanvirab » Fri Feb 25, 2011 11:41 am

Oh, those are not sparks.

Those are just very hot particles jumping around.

photon
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Re: spark...

Unread post by photon » Thu Dec 22, 2011 7:53 pm

in oven if we give irony things ,we see spark.why it happens?again, an extra Q how oven works that incident happens?
Try not to become a man of success but rather to become a man of value.-Albert Einstein

tanvirab
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Re: spark...

Unread post by tanvirab » Fri Dec 23, 2011 12:25 am

I think that's photo-electron effect. Microwave ovens work by using microwave waves, which hit the electrons in the metal.

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