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Full video: https://www.youtube.com/watch?v=1pfqIcSydgE
Chemistry may tell us the recipe for combustion, but the light show is all physics.
When a flame burns cleanly (like a gas flame, blowtorch or the base of a candle), the heat excites the molecules to release light (usually pale-blue) from atomic transitions.
That's quantum mechanics!
Now when the fuel isn't as pure and doesn't entirely burn (like a wood fire or coal fire or the top of a candle flame), there's still some blue light, but you don't see it because
it's overpowered by light from all the particles of soot & smoke - they're glowing red-hot!
Minute Physics provides an energetic and entertaining view of old and new problems in physics -- all in a minute!
Created by Henry Reich
What a coincidence! I was just wondering why flames looked blue even though the temperature for black body radiation wasn't met. Now i realise that the blue comes from the emmision spectrums! Thank you!
Chemistry is quantum mechanics, aka physics. 😁
had a fellow physics student swear everything that a camp fire is orange due to natrium, instead of black body radiation as it is .....
Now to add some more quantum physics: think about why sodium turns your flame yellow, copper turns it bright blue/green, calcium turns it red, etc etc! (And yes, that’s also how fireworks get their colours.)
So barely visible blue is emission spectra, while the bright yellow is black body radiation from the dirty soot glowing red-yellow hot
Why do I feel like when I was a kid somebody told me that blue flames were hotter or colder than yellow flames?
That's chemistry for you.
henry minutephysics....
That’s all still chemistry too. It’s just an area of overlap between the disciplines
gooood!
All science is physics!
The og!!!
is it bad if my fire is green
chemistry is physics
Someone is promoting your account, saying you can get $300-$500 in compensation for following Get. Are these people hired by you? The promotion is really aggressive - I've already saved the evidence. Stop letting these trolls harass and scam us.
The lightshow isn't ALL physics. You can add some chemistry to it to change the colour. Copper makes it green for instance. ;)
But natural gas, (cooking gas) Burns Blue too
i don’t get it
Are electron transisions physics or chemistry? Are protein folds chemistry or biology? Speaking rigidly about categories helps no one.
Chemistry is applied physics; biology is applied chemistry 😎