Mercury 'surface tension' vs. density

Click For Summary

Discussion Overview

The discussion revolves around the feasibility of using mercury in a diorama to simulate a photon torpedo strike, specifically whether mercury can follow a thread in a controlled manner. Participants explore various ideas and alternatives for achieving a visually appealing effect while considering the properties of mercury and other substances.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested
  • Conceptual clarification

Main Points Raised

  • One participant expresses concern that mercury will simply fall straight down due to its weight rather than follow the thread, citing its toxic nature as a reason to avoid experimentation.
  • Another participant suggests that using a silver bead or fluorescent airsoft pellet might be a safer alternative to mercury.
  • Some participants discuss the potential for using oil, which they believe would follow a thread, as a substitute for mercury.
  • A suggestion is made to use mirrors to change the viewer's perspective, allowing a drop of liquid to fall straight down while appearing to travel along a thread.
  • There is mention of a vortex generator and smoke as a medium, although concerns are raised about compatibility with the original display idea.
  • One participant questions whether mercury will adhere to the thread, emphasizing the importance of wettability in this context.
  • Another participant recalls decorative items from the past that used oil running down wires, suggesting this as a potential method for achieving a similar visual effect.

Areas of Agreement / Disagreement

Participants generally agree that using mercury poses significant risks and challenges, but there is no consensus on the best alternative or method to achieve the desired visual effect. Multiple competing views remain regarding the use of different substances and techniques.

Contextual Notes

Participants express uncertainty about the properties of mercury and its interaction with the thread, particularly regarding wettability and surface tension. There are also unresolved considerations about the safety and practicality of various proposed alternatives.

  • #31
lisab said:
When I was a young, a neighbor kid had some mercury that we all played with. Yes, we handled it, tried not to drop it...poured it from hand to hand.
My wife was given Mercury to play with in science class. Now that she's in health care and knowledgeable about toxins, she too wonders how she survived childhood.


Bob S said:
Metallic mercury is relatively harmless when compared to the organic methyl mercury compound found in fish..
I have always wondered about this. I have heard that there were two types of Mercury, one organic and one inorganic but I never understood it - it's an element!
 
Physics news on Phys.org
  • #32
DaveC426913 said:
I have heard that there were two types of Mercury, one organic and one inorganic but I never understood it - it's an element!
Hold onto that thought, pal. I have a panel of my comic that directly references this, but I'm having a hell of a time trying to remember how to use Illustrator 6 which it is stored in, so as to upgrade it for publication. Laugh if you like, but I've gone through 4, 6, 8, 10, and CS. It's like trying to learn to read all over again, and I don't have the manual any more.
 
  • #33
See section on methylization of mercury in
http://www.usgs.gov/themes/factsheet/146-00/
Bob S
 
  • #34
Hey, Bob. I was absent for a couple of days and lost track of this thread. Thanks for the link; it's very informative.
 

Similar threads

  • · Replies 18 ·
Replies
18
Views
3K
  • · Replies 33 ·
2
Replies
33
Views
3K
  • · Replies 3 ·
Replies
3
Views
2K
  • · Replies 3 ·
Replies
3
Views
2K
  • · Replies 8 ·
Replies
8
Views
2K
  • · Replies 1 ·
Replies
1
Views
3K
  • · Replies 15 ·
Replies
15
Views
4K
Replies
15
Views
3K
  • · Replies 6 ·
Replies
6
Views
2K
  • · Replies 52 ·
2
Replies
52
Views
8K