Sciencemadness Discussion Board
Not logged in [Login ]
Go To Bottom

Printable Version  
 Pages:  1  ..  71    73
Author: Subject: Pretty Pictures (2)
arkoma
Redneck Overlord
*******




Posts: 1591
Registered: 3-2-2014
Location: On a Big Blue Marble hurtling through space
Member Is Offline

Mood: ¡socialista!

[*] posted on 25-2-2022 at 22:33


Long wave UV lamp left column, incandescent light right.

The top four are pictures of a rock I got from Violet Sin,and the other set is a piece of dragon's blood resin (incense)

1a.png - 2.1MB 1b.png - 1.6MB

2a.png - 2MB 2b.png - 2.5MB

3a.png - 1.4MB 3b.png - 1.3MB




Travel is fatal to prejudice, bigotry, and narrow-mindedness, and many of our people need it sorely on these accounts.
View user's profile View All Posts By User
Rainwater
Hazard to Others
***




Posts: 215
Registered: 22-12-2021
Member Is Offline


[*] posted on 5-3-2022 at 12:29


youtube video
Dancing sodium.
The sodium metal is reacting with a secondary alcohol in mineral oil.
This reaction produces hydrogen gas, which stick to the small balls of molton sodium, causing them to float.




"You can't do that" - challenge accepted
View user's profile View All Posts By User
Morgan
International Hazard
*****




Posts: 1568
Registered: 28-12-2010
Member Is Offline

Mood: No Mood

[*] posted on 5-3-2022 at 17:04


This was odd how the syringe pauses and restarts well over twenty times, the ping pong ball reactivating the motion. It's just a 1 ml syringe press fit to a 1 ml test test via a piece of pink silicone tubing. I've run it many times and it's extremely resistant to stopping completely, one run over 5 minutes when I finally stopped it.
I bought the syringe for one dollar on eBay from China several years ago and never used it for anything.

Spontaneous Combustion of a Platinum Catalyst Lighter Powering a 1 ml Syringe Motor
https://youtu.be/PZVBjWIK_3A
Another angle
https://youtu.be/tGD_D9NzDVM

[Edited on 6-3-2022 by Morgan]
View user's profile View All Posts By User
Tsjerk
International Hazard
*****




Posts: 2788
Registered: 20-4-2005
Location: Netherlands
Member Is Offline

Mood: Mood

[*] posted on 6-3-2022 at 02:38


PXL_20220305_174137665.MP.jpg - 3.5MB

Hydroxylamine HCl from approximately 80% methanol.
View user's profile View All Posts By User
DrRadium
Harmless
*




Posts: 14
Registered: 30-11-2021
Member Is Offline


[*] posted on 7-3-2022 at 11:59


One of my earlier attempts to make YInMn blue in two different hues
!after heating.jpg - 543kB

A recent big batch of YInMn blue
!bowl of blue.jpg - 795kB
View user's profile View All Posts By User
DrRadium
Harmless
*




Posts: 14
Registered: 30-11-2021
Member Is Offline


[*] posted on 7-3-2022 at 12:03


Metal substitution variants of YInMn blue, YAlCuTi greens

yacuti green.jpg - 757kB
View user's profile View All Posts By User
Tsjerk
International Hazard
*****




Posts: 2788
Registered: 20-4-2005
Location: Netherlands
Member Is Offline

Mood: Mood

[*] posted on 8-3-2022 at 02:42


That blue is intense! I read about it, is the color in the picture representative for the color in real life?
View user's profile View All Posts By User
Brain&Force
Hazard to Lanthanides
*****




Posts: 1299
Registered: 13-11-2013
Location: UW-Madison
Member Is Offline

Mood: Incommensurately modulated

[*] posted on 3-4-2022 at 10:43


Neodymium acetate tetrahydrate, taken with a really nice Leica microscope and a polarizing filter.

Image003.png - 7MB




At the end of the day, simulating atoms doesn't beat working with the real things...
View user's profile View All Posts By User
Lion850
National Hazard
****




Posts: 497
Registered: 7-10-2019
Location: Australia
Member Is Offline

Mood: Great

[*] posted on 21-4-2022 at 21:26


Gold!!!
F9B0E0F2-6648-49DA-9A41-C04247200CB8.jpeg - 3.6MB



not really, just a leaf of lead iodide :)
View user's profile View All Posts By User
kweiny
Harmless
*




Posts: 12
Registered: 30-12-2018
Location: Somewhere in Europe
Member Is Offline

Mood: Excited

shocked.gif posted on 30-4-2022 at 03:36


I recently worked with a Chlorine compressor (takes gaseous chlorine from a big electrolysis cell and turns it liquid) and the liquid Chlorine looked absolutely stunning when shining a flashlight through the watchglass.





liquid Chlorine.jpg - 4.1MB Chlorine Compressor.jpg - 3.7MB
View user's profile View All Posts By User
DraconicAcid
International Hazard
*****




Posts: 3951
Registered: 1-2-2013
Location: The tiniest college campus ever....
Member Is Offline

Mood: Semi-victorious.

[*] posted on 16-5-2022 at 18:46


Crystals of Cu(acac)2, formed from methanol/isopropanol.

CuAcacXtals2.jpg - 102kB




Please remember: "Filtrate" is not a verb.
Write up your lab reports the way your instructor wants them, not the way your ex-instructor wants them.
View user's profile View All Posts By User
Lion850
National Hazard
****




Posts: 497
Registered: 7-10-2019
Location: Australia
Member Is Offline

Mood: Great

[*] posted on 4-6-2022 at 18:01


Nickel sulphate made by dissolving nickel nitrate in glacial acetic acid and then dropwise adding the stoichiometric amount of sulphuric acid.

660243EC-274B-4793-9497-2BFDCE3A9533.jpeg - 1.4MB
View user's profile View All Posts By User
DrRadium
Harmless
*




Posts: 14
Registered: 30-11-2021
Member Is Offline


[*] posted on 1-8-2022 at 19:24


Quote: Originally posted by Tsjerk  
That blue is intense! I read about it, is the color in the picture representative for the color in real life?


I hope you're asking about the YInMn blue or I'm about to answer questions no one is asking. Yes, that is pretty close to how it looks in bright light when synthesis is complete. I adjust white balance and if necessary adjust hue a little in order to make it look in photos as it to my eye. It doesn't come out this intense after the first heating, although it is most definitely blue.

If I had a pelleting press I might be able to do it in one run, but without one it requires a few heat-grind-reheat cycles to develop this intensity. I have photos up that show changes over the typical 3 necessary heating cycles as part of an instructable I recently posted on making the pigment. Figured I kept saying that most anyone with a kiln that could reach 1200┬░C could make it, so I should try to prove it. I wrote it up as a introduction to solid state chemistry. Relevant photos will be in step 5 even if I improve the images used: https://www.instructables.com/Make-YInMn-Blue-Pigment-Using-...

Regardless the process ends up producing pigment that looks very much like the commercial pigment. I'm attaching an image of mine vs official PB86 shot side by side. The isolated PB86 was a byproduct of analysis I did on Golden heavy body acrylic YInMn blue I bought when it was briefly available. I wanted to find out how much pigment they used in their paint (answer about 20-25% of the total weight of paint, 40-45% of the dry weight in case anyone cares) to guide my own paintmaking.

That is probably more than you or anyone else wanted to know.


mine vs, theirs.jpg - 285kB
View user's profile View All Posts By User
DrRadium
Harmless
*




Posts: 14
Registered: 30-11-2021
Member Is Offline


[*] posted on 1-8-2022 at 19:36


Quote: Originally posted by DraconicAcid  
Crystals of Cu(acac)2, formed from methanol/isopropanol.


Are those crystals as flexible as is claimed? Can they really be tied in knots?
View user's profile View All Posts By User
DraconicAcid
International Hazard
*****




Posts: 3951
Registered: 1-2-2013
Location: The tiniest college campus ever....
Member Is Offline

Mood: Semi-victorious.

[*] posted on 1-8-2022 at 19:58


Quote: Originally posted by DrRadium  
Quote: Originally posted by DraconicAcid  
Crystals of Cu(acac)2, formed from methanol/isopropanol.


Are those crystals as flexible as is claimed? Can they really be tied in knots?

I did not know they were supposed to be flexible. I'll try, but I have my doubts.




Please remember: "Filtrate" is not a verb.
Write up your lab reports the way your instructor wants them, not the way your ex-instructor wants them.
View user's profile View All Posts By User
Tsjerk
International Hazard
*****




Posts: 2788
Registered: 20-4-2005
Location: Netherlands
Member Is Offline

Mood: Mood

[*] posted on 1-8-2022 at 23:21


Thanks for the answer, I was asking about the YInMn :)
View user's profile View All Posts By User
 Pages:  1  ..  71    73

  Go To Top