What causes this phenomenon?

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Offline horo1988

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What causes this phenomenon?
« on: 05/11/2007 02:42:59 »
I did this experiment at home

-Light your candle, and allow it to burn for 1 minute.
-Quickly lower a white 3" x 5" index card (held horizontally) down into the candle flame.
-Hold the card in this position until the upper side of the card begins to scorch, but not until it catches on fire. Hold it steady.
-If it does catch on fire, place the burning index card in a beaker, and try again with a new card.
-Note the scorch pattern on top of the card.
Source: newbielink:http://www.nasaexplores.com [nonactive]

I see the scorch pattern, but I dont kno how to explain why is it happened ... can you explain to me or give me any hints please, thank you

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Offline Karen W.

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What causes this phenomenon?
« Reply #1 on: 05/11/2007 03:24:28 »
I will try it and see!


"Life is not measured by the number of Breaths we take, but by the moments that take our breath away."

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Offline lightarrow

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What causes this phenomenon?
« Reply #2 on: 05/11/2007 12:38:41 »
I did this experiment at home

-Light your candle, and allow it to burn for 1 minute.
-Quickly lower a white 3" x 5" index card (held horizontally) down into the candle flame.
-Hold the card in this position until the upper side of the card begins to scorch, but not until it catches on fire. Hold it steady.
-If it does catch on fire, place the burning index card in a beaker, and try again with a new card.
-Note the scorch pattern on top of the card.
Source: www.nasaexplores.com

I see the scorch pattern, but I dont kno how to explain why is it happened ... can you explain to me or give me any hints please, thank you
Where should I look exactly in that web page?

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Offline horo1988

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What causes this phenomenon?
« Reply #3 on: 07/11/2007 03:56:27 »
I just note the source to credit them, not for any neccessary info, so ya :D