Chyros' chemistry thread
Chyros 27 Oct 2010
Good luck with that .
On another note: a friend of mine works in physical organic chemistry making organic substrates and has lots of colourful compounds, such as this one. Here you can see a beaker of one of his samples under a blacklight.
Explain what is happening here.
On another note: a friend of mine works in physical organic chemistry making organic substrates and has lots of colourful compounds, such as this one. Here you can see a beaker of one of his samples under a blacklight.
Explain what is happening here.
deltaepsilon 27 Oct 2010
Chyros 27 Oct 2010
Destiny, on 27 Oct 2010, 9:33, said:
Bio-luminescence!
Edited by Chyros, 27 October 2010 - 15:35.
Chyros 27 Oct 2010
n5p29, on 27 Oct 2010, 17:49, said:
is that fluorescent (that glow-in-the-dark thingy)?
Destiny 28 Oct 2010
I guess the stuff inside are reacting each other which in turns produces light and heat and...stuff, and the blue coloration is because of...UV?
n5p29 28 Oct 2010
Chyros, on 27 Oct 2010, 23:24, said:
n5p29, on 27 Oct 2010, 17:49, said:
is that fluorescent (that glow-in-the-dark thingy)?
so the colorful glowing ring/tube toys, that usually found at night carnivals or concerts, are not fluorescent? o:
Chyros 28 Oct 2010
Destiny, on 28 Oct 2010, 2:22, said:
I guess the stuff inside are reacting each other which in turns produces light and heat and...stuff, and the blue coloration is because of...UV?
@ n5p29: eh, it's time for some more formal terminology to explain this. It's neither fluoro- nor phosphorescent - it's chemiluminescent since the light comes from a chemical reaction between H2O2 and Ph2(COO)2. Fluoro- and phosphorescence emit light because they absorb light, not because of a reaction.
Destiny 28 Oct 2010
Pigmentation? Or...stuff...IDK Maybe the chemical properties absorb all but blue and stuff...
Amdrial 28 Oct 2010
Just a random guess: The substance contained within the glass refracts and reflects the light directed at the glass and reflects the light back at the (camera)lense which will as a result make it appear as if the entire substance is glowing? (Compared with shooting a narrow coloured laser at a crystal, which will in turn make the entire crystal glow in the laser's colour)
Edited by Amdrial, 28 October 2010 - 08:59.
Edited by Amdrial, 28 October 2010 - 08:59.
Chyros 28 Oct 2010
Hmmm, not bad guesses. Both of your guesses are important concepts in physics, actually. In this case, it's like this.
The molecules absorb energy in the form of UV light, which brings them into a higher-energy state. This higher-energy state relaxes back into the "normal" state with loss of energy, namely the light emitted from the molecule. Kinda like this (except not a laser but UV)
Edited by Chyros, 28 October 2010 - 19:30.
The molecules absorb energy in the form of UV light, which brings them into a higher-energy state. This higher-energy state relaxes back into the "normal" state with loss of energy, namely the light emitted from the molecule. Kinda like this (except not a laser but UV)
Edited by Chyros, 28 October 2010 - 19:30.
Chyros 30 Oct 2010
Addendum on aqua regia:
In retrospect I found I had kept it a bit short .
Also, the reason why the organic molecule was fluorescent was because it has a highly conjugated system (many alternating double bonds) which allow it to take up and delocalise electrons easily. This excess energy is then emitted again in the form of visible light.
In retrospect I found I had kept it a bit short .
Also, the reason why the organic molecule was fluorescent was because it has a highly conjugated system (many alternating double bonds) which allow it to take up and delocalise electrons easily. This excess energy is then emitted again in the form of visible light.
Chyros 30 Oct 2010
It's very hard to do stuff while having only 2D vision . I can either look at camera footage and have 2D vision but at least keep the camera on target, or look at the thing with my own eyes (in 3D) and then the camera will start to wander off of what I want to film. I'm also very limited to what I can film since for most chem stuff you need two (or three or four or five or two dozen) hands.
If I made some kind of massive cockup I would just re-record the movie, though .
If I made some kind of massive cockup I would just re-record the movie, though .
Chyros 30 Oct 2010
We don't have helmets (well, we got blast shields, but I'm not going to use those ) but even if we did, I'd never get the cam on in such a way that I'd be able to film well what I was doing. Worse, it wouldn't be able to record sounds much at all.
I'll have to think of some other way, I guess.
I'll have to think of some other way, I guess.
Chyros 31 Oct 2010
Chyros 05 Dec 2010
The glow, the wonderful glow - can you not see it General?!
After a rather long pause here I'm gonna throw in a fun picture of a reaction done using a very powerful UV lamp. The lamp is so powerful that you need serious tinfoil to keep the light in otherwise everybody who gets near loses eyesight pretty immediately. The lamp also has to be cooled constantly because otherwise it would melt itself.
I have some more stuff in the pipe that I want to show, but first I need a video to explain the principles of it and I've tried four or five takes now which have all failed. I'm trying to get it on ASAP without too many messups in it .
After a rather long pause here I'm gonna throw in a fun picture of a reaction done using a very powerful UV lamp. The lamp is so powerful that you need serious tinfoil to keep the light in otherwise everybody who gets near loses eyesight pretty immediately. The lamp also has to be cooled constantly because otherwise it would melt itself.
I have some more stuff in the pipe that I want to show, but first I need a video to explain the principles of it and I've tried four or five takes now which have all failed. I'm trying to get it on ASAP without too many messups in it .
TheDR 05 Dec 2010
That looks awesome!
Now if i could only incorporate that into a computer case...
Now if i could only incorporate that into a computer case...