How much less efficient is a yellow gas flame than a blue one?
35 replies, posted
Please and thank you.
Blue ones are hotter.
Edit:
But outside of that, you'd need to know more specifics.
/thread
i learnt this in science class ages ago :colbert:
[QUOTE=wuzzimu;19852230]Blue ones are hotter.
Edit:
But outside of that, you'd need to know more specifics.[/QUOTE]
Flame is equal parts yellow and blue.
[QUOTE=dryer-lint;19852445]Flame is equal parts yellow and blue.[/QUOTE]
It's hot.
[editline]06:07PM[/editline]
I don't really understand what's going on....
I need more input, what are you using the flame for?
Why do you think jet torches are blue, and normal lighters are yellow? :colbert:
Put your finger in front of each. Come back and tell us which one is hotter.
Is this a question for your homework or something?..
Anyways, blue flames aren’t [i][b]always[/b][/i] hotter than yellow flames, because the color of light emitted by the flame can depend on exactly which atoms and molecules are in the flame. Each atom or molecule has certain special frequencies (colors) at which it absorbs and emits light, just like a musical instrument has special frequencies at which it absorbs and emits sound. Sometimes that’s more important than the temperature of the flame in setting the color. Some chemicals burn with a blue color, for example, so that if you burn some of these on an ordinary fire it will look blue for a while (some fireplace logs may do this). This does not mean that the temperature of the whole fire went up, just that these chemicals made the color change.
True^ hence green flamed lighters.
But in [u]most[/u] cases blue is hotter. A jet butane lighter has a blue flame, while a normal butane lighter has a yellow flame.
Yeah, i know, thats why i highlighted the aren't always. I agree with you though
[QUOTE=PonceDeLeon;19852518]Is this a question for your homework or something?..
Anyways, blue flames aren’t [i][b]always[/b][/i] hotter than yellow flames, because the color of light emitted by the flame can depend on exactly which atoms and molecules are in the flame. Each atom or molecule has certain special frequencies (colors) at which it absorbs and emits light, just like a musical instrument has special frequencies at which it absorbs and emits sound. Sometimes that’s more important than the temperature of the flame in setting the color. Some chemicals burn with a blue color, for example, so that if you burn some of these on an ordinary fire it will look blue for a while (some fireplace logs may do this). This does not mean that the temperature of the whole fire went up, just that these chemicals made the color change.[/QUOTE]
By him stating it's a gas flame, were are going to assume that it is a standard natural gas flame, or something like a lighter.
Were are not talking about burning random materials.
Blue = much hotter
[QUOTE=PonceDeLeon;19852598]Yeah, i know, thats why i highlighted the aren't always. I agree with you though[/QUOTE]
I know. I was agreeing with you.
[QUOTE=PonceDeLeon;19852518]Is this a question for your homework or something?..
Anyways, blue flames aren’t [i][b]always[/b][/i] hotter than yellow flames, because the color of light emitted by the flame can depend on exactly which atoms and molecules are in the flame. Each atom or molecule has certain special frequencies (colors) at which it absorbs and emits light, just like a musical instrument has special frequencies at which it absorbs and emits sound. Sometimes that’s more important than the temperature of the flame in setting the color. Some chemicals burn with a blue color, for example, so that if you burn some of these on an ordinary fire it will look blue for a while (some fireplace logs may do this). This does not mean that the temperature of the whole fire went up, just that these chemicals made the color change.[/QUOTE]
Irrelevant. It's natural gas that's burning and if you'd know that if you payed any attention before posting. Natural gas either burns efficiently with a blue flame. or inefficiently with a yellow flame. Please quit pretending like I'm stupid/you're smart.
I just want a general estimation of the inefficiency of a yellow flame in something like a bunsen burner, gas stove, or gas fireplace.
Where in your post does it specify that its a natural gas flame?
I never said you were stupid/im smart, nor act like it! I was just putting that out there.
[editline]Yeah[/editline]
Yeah, you never did actually specify did you
[QUOTE=D0C H.;19852789]Where in your post does it specify that its a natural gas flame?[/QUOTE]
[quote=THREAD TITLE]How much less efficient is a yellow [B]gas[/B] flame than a blue one?[/quote]
[QUOTE=KSI;19852612]Blue = much hotter[/QUOTE]
Just wait until you see green.
He said gas, and whenever I think of basic science involving gas, I always assume natural gas. Just me though.
But still, there's a flame that is clear, if it gets that hot, with a faint tint of blue, and a spark of orange here and there.
That. Is. Hot. I put my hand 3 feet away from it and i felt the heat.
[QUOTE=dryer-lint;19852823][/QUOTE]
"gas" could mean anything. neon is a gas, nitrogen is a gas..
butane[b] gas[/b]. propane [b]gas[/b].
[QUOTE=shill le 2nd;19852852]neon is a [b]gas[/b], nitrogen is a [b]gas[/b]..[/QUOTE]
[QUOTE=shill le 2nd;19852852]"gas" could mean anything. neon is a gas, nitrogen is a gas..[/QUOTE]
But we don't burn them for the use of things like burners and stoves.
I have used a propane gas stove many times.
Natural gas is more commonly hooked up to houses. Therefore I went with the most common of the occurrences.
Blue fire is not hotter, burning the chemical produces blue fire. If you burn newspaper with ink on it, you can also get green and purple fire, that doesn't mean it's hotter.
You were correct. Im just saying that its retarded to expect everybody to assume natural gas, and get offended when we don't like he did.
[QUOTE=yuki;19852979]Blue fire is not hotter, burning the chemical produces blue fire. If you burn newspaper with ink on it, you can also get green and purple fire, that doesn't mean it's hotter.[/QUOTE]Yes it is. Those are just ink to color the flame. Actually producing a blue flame is much much hotter than a yellow flame.
[b]usually^[/b]
Lets all pretend that a blue is hotter then yellow.
Just so everyone is happy
Put two candles next to each other. Place on finger on the yellow. Place other finger on other hand on the blue part of the other candle. See which pulls away faster.
There. Everyone is happy now :).
Now in return im probably going to get some stupid response like " Fingertips are different, and respond differently to heat, hurr hurr, blah blah"
Sorry, you need to Log In to post a reply to this thread.