aga
Forum Drunkard
Posts: 7030
Registered: 25-3-2014
Member Is Offline
|
|
Microwave Chemistry !
Yesterday i found a Microwave Oven in the bins.
(yep, aga-bin-raidin')
All that was missing was the glass turntable plate !
That must have been why they threw it out - the rest all works fine, and i already had a pyrex flan tray that fits perfectly !
|
|
|
tsathoggua1
Hazard to Others
Posts: 335
Registered: 8-1-2017
Location: Beyond the pale
Member Is Offline
Mood: Phosphorescent
|
|
Found one myself in pretty similar (ish) circumstances and would love to hear of practical attempts at modification to take a RBF of appropriate size
and condenser Its more the latter that I find the earliest or most likely break in potential for serious eye damage and worse things than eyes being
cooked.
Also, wouldn't it require the custom fabrication of a new resonant cavity> because nigh every lab MW oven intended for chemistry labs seems to be
mono-mode in operation.
|
|
|
aga
Forum Drunkard
Posts: 7030
Registered: 25-3-2014
Member Is Offline
|
|
I do not intend to modify the oven at all, well, at least not yet 
|
|
|
phlogiston
International Hazard
Posts: 1375
Registered: 26-4-2008
Location: Neon Thorium Erbium Lanthanum Neodymium Sulphur
Member Is Offline
Mood: pyrophoric
|
|
These two guys experimented with a naked magnetron tube. Insanely reckless, but entertaining:
https://www.youtube.com/watch?v=FIU8WZR9DNA
[Edited on 24-1-2017 by phlogiston]
-----
"If a rocket goes up, who cares where it comes down, that's not my concern said Wernher von Braun" - Tom Lehrer |
|
|
JJay
International Hazard
Posts: 3440
Registered: 15-10-2015
Member Is Offline
|
|
That's incredibly entertaining. You'd think that DIY magnetron guns would be more popular.
|
|
|
j_sum1
Administrator
Posts: 6218
Registered: 4-10-2014
Location: Unmoved
Member Is Offline
Mood: Organised
|
|
Hilarious. These guys are the new King of Random in my opinion; and without the obnoxious commercialisation. I just watched charging a mobile phone
using induced current from overhead power lines. There is lots of similar stuff there as well.
|
|
|
Jstuyfzand
Hazard to Others
Posts: 166
Registered: 16-1-2016
Location: Netherlands
Member Is Offline
Mood: Learning, Sorta.
|
|
I once heard those microwave waves can burn your retina?
If this is not the case, and it feels just like heat (can someone confirm) I have a very interesting use for that old microwave in my shed
|
|
|
Melgar
Anti-Spam Agent
Posts: 2004
Registered: 23-2-2010
Location: Connecticut
Member Is Offline
Mood: Estrified
|
|
They actually have used large microwave transmitters for crowd-control purposes similar to how they use tear gas. Apparently it produces burning
sensations in your skin, but without actually doing significant damage. Microwaves would have a hard time reaching your retina through your ocular
fluid, in any case. You may be thinking of the sparks from arc welders, which can release high-energy UV, which CAN damage your retina.
|
|
|
Sulaiman
International Hazard
Posts: 3555
Registered: 8-2-2015
Location: 3rd rock from the sun
Member Is Offline
|
|
I would first get a microwave leak detector
e.g. http://www.ebay.co.uk/itm/Microwave-Leak-Detector-3MHz-3GHz-...
then test it,
then mess with the microwave oven,
but the best is to use as intended,
kW microwaves scare me (I've worked from nW to 320 MW peak)
CAUTION : Hobby Chemist, not Professional or even Amateur
|
|
|
aga
Forum Drunkard
Posts: 7030
Registered: 25-3-2014
Member Is Offline
|
|
No need to test - they All leak quite a lot anyway.
Did a few tests last summer, and not even one microwave oven tested was 'properly' sealed.
Best to be away from the thing when it's running, but then you can't see what's going on.
Much safer to do nothing at all, ever, but where's the fun in that ?
|
|
|
Zyklon-A
International Hazard
Posts: 1547
Registered: 26-11-2013
Member Is Offline
Mood: Fluorine radical
|
|
Does anyone know if an old mig welder transformer would destroy a average magnetron? Naturally you'd have to reverse the primary and secondary coil
for HV. I don't have the MIG's specs ATM but it's definitely at or below average watts.
Point is I'm starving and I need this frozen turkey cooked in 25 minutes tops(:
Also a directional microwave gun would be a trip. sucks it's not possible to focus long distances, at least for amateurs. Think wire mesh is
equivalent to a mirror for those frequencies, construct into a maser obviously.
|
|
|
Sulaiman
International Hazard
Posts: 3555
Registered: 8-2-2015
Location: 3rd rock from the sun
Member Is Offline
|
|
google HERF GUN
but do not make one until you know a lot about microwaves
then you would not make one anyway 
CAUTION : Hobby Chemist, not Professional or even Amateur
|
|
|
PHILOU Zrealone
International Hazard
Posts: 2893
Registered: 20-5-2002
Location: Brussel
Member Is Offline
Mood: Bis-diazo-dinitro-hydroquinonic
|
|
aga,
Aga2telya (I get to tell you)
This might be interesting to you, I found it by a mere accident while searching for a paper for Boffis about benzothiazoles...I immediately thought
about your microwave and your future microwave experiments
Microwave in organic synthesis pdf
PH Z (PHILOU Zrealone)
"Physic is all what never works; Chemistry is all what stinks and explodes!"-"Life that deadly disease, sexually transmitted."(W.Allen)
|
|
|
aga
Forum Drunkard
Posts: 7030
Registered: 25-3-2014
Member Is Offline
|
|
Lol.
Looks like a good read that there paper.
Depolymerisation of Cellulose (p.43) in 5 mins, 40% glucose yield !
Many thanks Philoo
[Edited on 30-1-2017 by aga]
|
|
|
![[*]](images/xpblue/default_icon.gif){kind=icon}
