Naked Science Forum
General Science => General Science => Topic started by: neilep on 16/12/2019 13:40:24
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Dearest Fireologists,
As a sheepy I of course know almost everything there is to know but one thing that eludes me is whether fire can have a shadow !
look , here's some fire being all firey !!
(https://drive.google.com/uc?id=1peJGdc-qkoJzskXGrO3dLos2ehCYtzR0)
Fire Being All Firey Yesterday
As ewe can see, ewe can not see through it, so, if I was to shine a big enough torch at it would it make a shadow on the other side ? i'm curious because i can't see through it yet it's a source of light !!
whajafink ?
Can A Fire Have A Shadow ?
Hugs and shmishes
mwah mwah !!
Neil
"This girl is on fire !
OUCH Oooh OUCH !!"
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Fire very much does block some light as it consists of glowing particles in part. Other light gets deflected by the heat, but that effect will not produce a crisp shadow.
So put a spotlight to the side of a fire and it will indeed cast a shadow on a wall on the opposite side.
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Fire very much does block some light as it consists of glowing particles in part. Other light gets deflected by the heat, but that effect will not produce a crisp shadow.
So put a spotlight to the side of a fire and it will indeed cast a shadow on a wall on the opposite side.
This is very interesting.....next time I flambe I will check for shadows ;)
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In the right conditions you can analyse what's in the flame by looking at the shadow.
https://en.wikipedia.org/wiki/Atomic_absorption_spectroscopy#Flame_atomizers
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Hi Neil
We did this kitchen science experiment on dark flames (https://www.thenakedscientists.com/get-naked/experiments/dark-flames) on the radio show; it deals with some aspects of your query.
We also did this experiment to show CO2 casting a shadow (https://www.thenakedscientists.com/get-naked/experiments/seeing-invisible) owing to the effects of refraction. This is also relevant to the question you are asking.
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In the right conditions you can analyse what's in the flame by looking at the shadow.
https://en.wikipedia.org/wiki/Atomic_absorption_spectroscopy#Flame_atomizers
That is fascinating, thanks BC.
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Hi Neil
We did this kitchen science experiment on dark flames (https://www.thenakedscientists.com/get-naked/experiments/dark-flames) on the radio show; it deals with some aspects of your query.
We also did this experiment to show CO2 casting a shadow (https://www.thenakedscientists.com/get-naked/experiments/seeing-invisible) owing to the effects of refraction. This is also relevant to the question you are asking.
Hi Chris,
Outstanding. Thank you very much. Love the kitchen science and CO2. Great stuff.
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Thanku so much for this.
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Thanku so much for this.
Can’t say we thank you for trying to spam us. However, as a small gesture as appreciation for your wasted effort, a ban.
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Here is another demonstration of black fire I found in YT.
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That guy is mainly wrong.
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That guy is mainly wrong.
Which part he gets it wrong? What's the right explanation?
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Is there a shadow without light?
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Is there a shadow without light?
no
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So soot basically ?
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This can be seen clearly in the above demonstration video that by playing with light you can make the fire dark enough that it really looks like the black fire. But there is no such thing like black fire its just a game with the atmospheric colors but the one thing that is clearly original and worth trying is write my assignment for cheap service! Try it once then let me know how much you like the service.
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This can be seen clearly in the above demonstration video that by playing with light you can make the fire dark enough that it really looks like the black fire. But there is no such thing like black fire its just a game with the atmospheric colors but the one thing that is clearly original and worth trying is write my assignment for cheap service! Try it once then let me know how much you like the service.
It would help if you could write good english.
You failed the test and are hereby expelled.
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Great question and great experiments Chris...Thank you guys...
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The fire is a mixture of atoms and ions that emits light but like any gas can also absorb light and so a fire casts a visible shadow especially if it is illuminated with a source of light that emits a color or colors that are well absorbed by the ionized gas called fire.
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In the upper layers of the emitted gas, soot is created, and it can cast a shadow.