Go Back   Freethought Forum > The Marketplace > The Sciences

Reply
 
Thread Tools Display Modes
  #1  
Old 10-13-2018, 11:45 PM
specious_reasons's Avatar
specious_reasons specious_reasons is offline
here to bore you with pictures
 
Join Date: May 2009
Posts: VCXLVII
Images: 8
Default Fucking magnets (and how they work for me)

On the coins thread, I posted a test photo of iron filings...

I took the iron filings, immersed them into Karo syrup on a well slide, then applied a magnet to it. Karo syrup is thick enough to keep the filing in place once I line them up with a magnet, but (mostly) optically neutral.

The only problem is that I wasn't patient enough to wait for the bubbles to disperse.




__________________
ta-
DAVE!!!
Reply With Quote
Thanks, from:
Ari (10-14-2018), BrotherMan (10-14-2018), But (10-14-2018), Crumb (10-15-2018), Ensign Steve (10-14-2018), JoeP (10-14-2018), lisarea (10-14-2018), slimshady2357 (10-14-2018), Sock Puppet (10-15-2018), SR71 (10-14-2018)
  #2  
Old 10-14-2018, 12:04 AM
SR71's Avatar
SR71 SR71 is offline
Stoic Derelict... The cup is empty
 
Join Date: Sep 2011
Location: The Dustbin of History
Gender: Male
Posts: VMCCXXXIX
Blog Entries: 1
Images: 2
Default Re: Fucking magnets (and how they work for me)

lurves the bubbles :)
__________________
Chained out, like a sitting duck just waiting for the fall _Cage the Elephant
Reply With Quote
Thanks, from:
specious_reasons (10-14-2018)
  #3  
Old 10-14-2018, 12:37 AM
Ensign Steve's Avatar
Ensign Steve Ensign Steve is offline
California Sober
 
Join Date: Jul 2004
Location: Silicon Valley
Gender: Bender
Posts: XXXMMCXXI
Images: 66
Default Re: Fucking magnets (and how they work for me)

In the other thread I was like "do something with fucking magnets" then I realized that's probably what this thread was about, so I rushed over to see!

Did not disappoint. :thumbup:
__________________
:kiwf::smurf:
Reply With Quote
Thanks, from:
BrotherMan (10-14-2018), Crumb (10-15-2018), JoeP (10-14-2018), Qingdai (10-20-2018), specious_reasons (10-14-2018)
  #4  
Old 10-14-2018, 01:29 AM
specious_reasons's Avatar
specious_reasons specious_reasons is offline
here to bore you with pictures
 
Join Date: May 2009
Posts: VCXLVII
Images: 8
Default Re: Fucking magnets (and how they work for me)

I did a quick focus-stack of the first picture - happened to have two at different focus depths.

__________________
ta-
DAVE!!!
Reply With Quote
Thanks, from:
Ari (10-21-2018), BrotherMan (10-14-2018), SR71 (10-15-2018)
  #5  
Old 10-14-2018, 02:34 AM
specious_reasons's Avatar
specious_reasons specious_reasons is offline
here to bore you with pictures
 
Join Date: May 2009
Posts: VCXLVII
Images: 8
Default Re: Fucking magnets (and how they work for me)

OK, last one for today:

Added a light green piece of paper to add some contrast...

__________________
ta-
DAVE!!!
Reply With Quote
Thanks, from:
Ari (10-21-2018), BrotherMan (10-14-2018), Corona688 (10-22-2018), Crumb (10-15-2018), Dragar (10-16-2018), Ensign Steve (10-14-2018), JoeP (10-14-2018), slimshady2357 (10-14-2018), SR71 (10-15-2018)
  #6  
Old 10-19-2018, 07:17 PM
Ensign Steve's Avatar
Ensign Steve Ensign Steve is offline
California Sober
 
Join Date: Jul 2004
Location: Silicon Valley
Gender: Bender
Posts: XXXMMCXXI
Images: 66
Default Re: Fucking magnets (and how they work for me)

:hijacked:

Fucking magnets!


Mind blown at 7:15
__________________
:kiwf::smurf:
Reply With Quote
Thanks, from:
Ari (10-21-2018), But (11-01-2018), ceptimus (10-20-2018), Crumb (10-19-2018), JoeP (10-19-2018), slimshady2357 (10-20-2018), SR71 (10-21-2018)
  #7  
Old 10-19-2018, 10:23 PM
JoeP's Avatar
JoeP JoeP is online now
Solipsist
 
Join Date: Jul 2004
Location: Kolmannessa kerroksessa
Gender: Male
Posts: XXXVMMXIII
Images: 18
Default Re: Fucking magnets (and how they work for me)

That's quite the haircut Garrett.

__________________

:roadrun:
Free thought! Please take one!

:unitedkingdom:   :southafrica:   :unitedkingdom::finland:   :finland:
Reply With Quote
Thanks, from:
Ensign Steve (10-20-2018)
  #8  
Old 10-20-2018, 05:28 AM
Qingdai's Avatar
Qingdai Qingdai is offline
Dogehlaugher -Scrutari
 
Join Date: Jan 2007
Location: Northwest
Gender: Female
Posts: XVDLXVII
Images: 165
Default Re: Fucking magnets (and how they work for me)

I think the bubbles look awesome. By the way.
__________________
Ishmaeline of Domesticity drinker of smurf tears
Reply With Quote
Thanks, from:
Ari (10-21-2018), Ensign Steve (10-20-2018), specious_reasons (10-22-2018), SR71 (10-21-2018)
  #9  
Old 10-21-2018, 03:16 AM
SR71's Avatar
SR71 SR71 is offline
Stoic Derelict... The cup is empty
 
Join Date: Sep 2011
Location: The Dustbin of History
Gender: Male
Posts: VMCCXXXIX
Blog Entries: 1
Images: 2
Default Re: Fucking magnets (and how they work for me)

I'm sending that to Ancient Aliens and say it's a secret NASA image of UFO's mining magnetite and mercury in the Oort cloud.
__________________
Chained out, like a sitting duck just waiting for the fall _Cage the Elephant
Reply With Quote
Thanks, from:
Ari (10-21-2018), BrotherMan (10-21-2018)
  #10  
Old 10-21-2018, 09:34 AM
Ari's Avatar
Ari Ari is offline
I read some of your foolish scree, then just skimmed the rest.
 
Join Date: Jan 2005
Location: Bay Area
Gender: Male
Posts: XMDCCCLV
Blog Entries: 8
Default Re: Fucking magnets (and how they work for me)

Quote:
Originally Posted by Ensign Steve View Post
Mind blown at 7:15
8:50 when the marble followers it like a track showing that the precise field lines seen on the film are strong and aren't just surface deep.
Reply With Quote
Thanks, from:
Crumb (10-21-2018), Ensign Steve (10-21-2018)
  #11  
Old 11-19-2018, 06:29 AM
specious_reasons's Avatar
specious_reasons specious_reasons is offline
here to bore you with pictures
 
Join Date: May 2009
Posts: VCXLVII
Images: 8
Default Re: Fucking magnets (and how they work for me)

I didn't like the green background, and even though I've been stewing over it for a month, I finally got around to trying something slightly different - I put black construction paper underneath it. Even though it's black, it's quite reflective, so when it's out of focus, it looks like a mottled grey and black.

__________________
ta-
DAVE!!!
Reply With Quote
Thanks, from:
Ari (01-01-2019), BrotherMan (11-19-2018), Crumb (11-19-2018), Ensign Steve (11-19-2018), JoeP (11-19-2018), ShottleBop (08-25-2023)
  #12  
Old 01-01-2019, 09:56 PM
specious_reasons's Avatar
specious_reasons specious_reasons is offline
here to bore you with pictures
 
Join Date: May 2009
Posts: VCXLVII
Images: 8
Default Re: Fucking magnets (and how they work for me)

I put more iron filings in Karo syrup and applied a magnetic field to them. This time, I made a few changes to try to reduce bubbles.

First I soaked them in a 20% Karo syrup solution, then I immersed them in a 75% solution. This was thick enough to have the filing hold their shape, but thin enough to prevent a lot of bubbles getting stuck. Not all of them, though.

The first one is a bit busy - There's too many iron filings in a small place to make nice clear lines. This is about 40X, cropped a bit because the focus stack has some artifacts on the edges.




This is further to the edge. This is around 40x, not focus stacked, cropped a bit as well.




Then I tried a closeup on the bottom left quarter of the above, this is a focus stack at 100x, but also cropped it, so it's a bit larger.



I'm happy with the reduced bubbles, but I still have some work to do.
__________________
ta-
DAVE!!!
Reply With Quote
Thanks, from:
Ari (08-24-2023), BrotherMan (01-02-2019), Crumb (01-03-2019), JoeP (01-01-2019), lisarea (01-01-2019), slimshady2357 (07-21-2023), Sock Puppet (01-04-2019)
  #13  
Old 07-19-2023, 04:22 AM
-FX-'s Avatar
-FX- -FX- is offline
Forum gadfly
 
Join Date: Feb 2011
Location: In your head
Gender: Male
Posts: MMXV
Blog Entries: 1
Default Re: Fucking magnets (and how they work for me)

Well get busy! We want more close ups of iron. And bubbles.
__________________
"Have no respect whatsoever for authority; forget who said it and instead look what he starts with, where he ends up, and ask yourself, "Is it reasonable?""

- Richard P. Feynman
Reply With Quote
  #14  
Old 08-24-2023, 05:54 PM
-FX-'s Avatar
-FX- -FX- is offline
Forum gadfly
 
Join Date: Feb 2011
Location: In your head
Gender: Male
Posts: MMXV
Blog Entries: 1
Default Re: Fucking magnets (and how they work for me)

I'm not joking.
__________________
"Have no respect whatsoever for authority; forget who said it and instead look what he starts with, where he ends up, and ask yourself, "Is it reasonable?""

- Richard P. Feynman
Reply With Quote
Reply

  Freethought Forum > The Marketplace > The Sciences


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

 

All times are GMT +1. The time now is 08:10 AM.


Powered by vBulletin® Version 3.8.2
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Page generated in 0.50358 seconds with 14 queries