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The WORST BOOKS Ever Written
If one looks into history with ones own eyes rather than through the propaganda tinged interpretatio ... |
10-5-2009 at 17:24
by: len1 |
Chemistry-related photography
[quote]
This merely says that once all other lens defects have been mitigated, the only thing tha ... |
27-4-2009 at 15:09
by: len1 |
Chemistry-related photography
[quote]The fringing woelen notices might be CA (which is a lens "defect") or because he reached the ... |
23-4-2009 at 23:46
by: len1 |
No more sodium from ebay
Yeah well the reason why we have a lot of posts but no action is that its a lot more work to do stuf ... |
23-4-2009 at 19:48
by: len1 |
Chemistry-related photography
[quote]
Ofcourse, but like I said, this is not an issue with common lenses because the increase o ... |
23-4-2009 at 19:45
by: len1 |
Chemistry-related photography
[rquote=151586&tid=12143&author=vulture][quote]
Light can not resolve separations less tha ... |
23-4-2009 at 04:24
by: len1 |
Sodium!
[rquote=13996&tid=2103&author=Organikum]I was irritated all time because of Marvins remark t ... |
21-4-2009 at 21:32
by: len1 |
Disapearing posts
Thanks Polverone. GC, my U2Us have also disappeared. |
21-4-2009 at 21:17
by: len1 |
Disapearing posts
Thats right. One should store a second copy of everything one does, in case things suddenly stop wo ... |
21-4-2009 at 02:39
by: len1 |
Disapearing posts
I wrote an explanation yesterday in the chemistry photography thread of how and why image quality de ... |
21-4-2009 at 00:51
by: len1 |
Chemistry-related photography
[rquote=151519&tid=12143&author=woelen][quote]I have to disagree on this one. Lens performan ... |
20-4-2009 at 08:18
by: len1 |
How to store Lanthanum metal
Its tempting to use a low bp liquid such as hexane to store alkali metals and the like. Anyone who ... |
16-4-2009 at 08:05
by: len1 |
Sodium metal - Illustrated Practical Guide
My notes.
Mark II has been upgraded
1) The anode on the long nickel tethers has been raised 3 ... |
16-4-2009 at 07:22
by: len1 |
NMR spares wanted
Thanks for that explanation, I have no idea how the shunt or parallel key might be inserted into the ... |
15-4-2009 at 03:07
by: len1 |
NMR spares wanted
I have a Hitachi 60MHz instrument. Not sure of the model number from here. I had intended to go th ... |
14-4-2009 at 20:46
by: len1 |
The synthesis of 1 and 2-naphthols from Napththalene
[rquote=150928&tid=11663&author=Paddywhacker]I am tempted to try this out, as I have been th ... |
14-4-2009 at 06:48
by: len1 |
The WORST BOOKS Ever Written
If you read the above carefully you will see that it shows and explains WHY that Ledgard book you ar ... |
6-4-2009 at 16:49
by: len1 |
Simple measurement of Iodide
[quote]I noticed however i'm far too polite to point out what was obviously not an error in your rat ... |
1-4-2009 at 00:43
by: len1 |
The WORST BOOKS Ever Written
[quote]
So, are you saying too that a hot gas rises, as say in a mirage, because the viscosity of t ... |
31-3-2009 at 02:27
by: len1 |
The WORST BOOKS Ever Written
Below is a snapshot of a 'distillation' setup from Ledgard's Kings Guide to Chem - its very original ... |
30-3-2009 at 03:48
by: len1 |
Simple measurement of Iodide
Thanks Magpie, you flatter me. I think I just persevere as far as I can, without it you get nowhere ... |
30-3-2009 at 03:06
by: len1 |
Simple measurement of Iodide
Interesting development in this.
After the oxidation of 0.1g KI in 10ml H2O using 10ml 0.6M H2O2 ... |
29-3-2009 at 01:32
by: len1 |
The WORST BOOKS Ever Written
In the course of a literature search I accidently came across this book with the strange title "King ... |
28-3-2009 at 00:15
by: len1 |
Simple measurement of Iodide
[quote]
while for equilibrium 2
3I2 + 6OH- -> IO3- + 5I- + 3H2O
[IO3-][5I-]/([I2]^3 [OH-]^ ... |
21-3-2009 at 17:42
by: len1 |
Simple measurement of Iodide
[quote][i]Originally posted by Magpie[/i]
[quote]
3) A basic solution of order pH ~ 10 will get th ... |
20-3-2009 at 03:54
by: len1 |
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