What do I need to create water with negatively charged ions?
Re: What do I need to create water with negatively charged ions?
Darkmatterx76 wrote:
ProfHankD wrote:
I think it causes slow transport of the crystaline nucleation sites... not much different from using microwaves? I do know that + vs - ions can cause directional freezing with impurities pushed to one side. Also, anything that slows freezing tends to make clearer ice because air bubbles have longer to escape.
That's correct. Really pure water generally has high resistance. However, electrolysis of salted water can separate water into Hydrogen and Oxygen even using something as wimpy as a 9V battery .
Well, I'm a Professor in Electrical and Computer Engineering... but that doesn't help me much with this (I'm really a computer engineer). Maybe somebody involved in battery chemistry?
I guess I should have looked at your name a little more closely.
I did try this with a 9V, but it didn't seem to do anything. Part of my issue is not wanting to use to much current, for obvious reasons. I guess I also have to investigate how to make sure that the charge/field is turning the ions to a negative charge over a positive one.
Any applied voltage will create equal numbers of positive & negative ions, with the ions split into different locations by the voltage.
Thanks for your input!
petrochemist wrote:
Normal ice has a well defined structure with the hydrogens on one molecule bonding to oxygens on other molecules in a regular way, the structure is more spaced out that in liquid water which is why ice floats. I'm sure I've got a material science book somewhere with the structure illustrated.
At extreme pressure/temperature there are other forms of ice structures - I think at least 5 of them. These will be well outside the realms of our experience but it's possible an electric field promotes one of them so it's taken instead of the more normal form.
I'd class pure water as a poor conductor rather than a terrible one. Ultra pure water has a resistance of 18 megaohms per cm while many insulators are far above that. FWIW Current flow is not actually necessary to align the molecules an electric field is sufficient.
Thanks for the info.
How would I generate a strong enough EM field in or around a small body of water in a freezer that would force the ions to be negatively charged?
Pentax K100D
Sigma SD14
Pentax K-7
Panasonic Lumix DMC-GF2
Pentax Q
+19 more
|
Post
(hide subjects)
|
Posted by
|
When
|
|
|
|
|
Jan 8, 2022
|
|
|
|
|
Jan 8, 2022
|
|
|
|
|
Jan 8, 2022
|
|
|
|
|
Jan 9, 2022
|
2 |
|
|
|
Jan 9, 2022
|
|
|
|
|
Jan 9, 2022
|
|
|
|
|
Jan 9, 2022
|
|
|
|
|
Jan 10, 2022
|
|
|
|
|
Jan 9, 2022
|
|
|
|
|
Jan 13, 2022
|
|
|
|
|
Jan 14, 2022
|
|
|
|
|
Mar 22, 2022
|
|
|
|
|
Mar 22, 2022
|
|
Keyboard shortcuts:
FForum
PPrevious
NNext
WNext unread
UUpvote
SSubscribe
RReply
QQuote
BBookmark
MMy threads
Color scheme?
Blue /
Yellow
The Sony ZV-E1 is the company's latest vlogging-focused camera: a full-frame mirrorless camera based the FX3/a7S III sensor, aimed at YouTubers and 'creators' looking to go pro.
The Sony ZV-E1 is a full frame camera targeting YouTubers. Chris and Jordan are Youtubers, what do they think?
Fujifilm's X-H2 is a high-resolution stills and video camera, that sits alongside the high-speed X-H2S at the pinnacle of the company's range of X-mount APS-C mirrorless cameras. We dug into what it does and what it means.
Holy Stone produces dozens of low-cost drone models aimed at consumers. We look at the HS710 and HS175D to see if they stack up to other sub-250g offerings. Are these secretly great or more like toys?
It's small, light, cheap and extremely wide but is it any good?
Above $2500 cameras tend to become increasingly specialized, making it difficult to select a 'best' option. We case our eye over the options costing more than $2500 but less than $4000, to find the best all-rounder.
There are a lot of photo/video cameras that have found a role as B-cameras on professional film productions or even A-cameras for amateur and independent productions. We've combed through the options and selected our two favorite cameras in this class.
What’s the best camera for around $2000? These capable cameras should be solid and well-built, have both the speed and focus to capture fast action and offer professional-level image quality. In this buying guide we’ve rounded up all the current interchangeable lens cameras costing around $2000 and recommended the best.
Family moments are precious and sometimes you want to capture that time spent with loved ones or friends in better quality than your phone can manage. We've selected a group of cameras that are easy to keep with you, and that can adapt to take photos wherever and whenever something memorable happens.
What's the best camera for shooting sports and action? Fast continuous shooting, reliable autofocus and great battery life are just three of the most important factors. In this buying guide we've rounded-up several great cameras for shooting sports and action, and recommended the best.
