vasilnatalie's avatar

The Wisp Jar

By vasilnatalie
6 Favourites
19 Comments
122 Views
While they don't provide as much light as lanterns or torches, some adventurers prefer wisp jars.  They are easy to maintain, they do not need to be kept upright, and the jar can be sealed airtight for limited periods.  For good or ill, they provide no heat, making them ideal light sources for those working with combustibles such as rare manuscripts or pyrotechnics.

While they're easy to purchase from any child, most wild wisps will rapidly die off.  Respected luminaries maintain their own stock of cultivated wisps.  Wisp populations will change over time and each luminary is noted for various characteristics of their stock, such as color, brightness, or longevity.

Particularly resilient wisp populations can survive for very long periods.  The Great Lamp at the Notos archives  has remained functional for centuries.  Its wisps have acquired a strange green pulse and have grown to enormous size.  The jar itself has been replaced several times; the bottom of the Great Lamp is littered with the debris of previous jars as transferring wisps can be a risky process.

Wisps require meat, but only in very small quantities.
IMAGE DETAILS
Image size
1090x652px 1.26 MB
Published:
Comments16
anonymous's avatar
Join the community to add your comment. Already a deviant? Log In
animaniac72's avatar
animaniac72Hobbyist Digital Artist
You would make a good salesman.
vasilnatalie's avatar
Oh, believe me, I really wouldn't :)
animaniac72's avatar
animaniac72Hobbyist Digital Artist
LOL
ToadieOdie's avatar
I like the jar too.
vasilnatalie's avatar
Thanks, I put a little work into (not a ton.)
ToadieOdie's avatar
How do you create the illusion of glass? Is it a mild reflection effect? Or just bending the light at the curves?
vasilnatalie's avatar
It's mostly just the use of a refraction shader in Blender.  The refraction shader is pretty simple in principle: it lets rays (projected from the camera) pass through but it bends them on the basis of the angle with which they strike the surface and an index of refraction.  It does this on both sides, so by making an inside and outside, you can create some cool jars.

Not really possible in MMD, although it can be emulated with some tricks.  Doing it on a per-pixel basis really requires a ray-tracing renderer like Blender.
ToadieOdie's avatar
Okay. I figured that what you did was basically a Blender only type of thing.
SilentLadyGTA's avatar
Fantastic light !
vasilnatalie's avatar
Thanks!  Too much glossy on the floor though.  And I think the jar should have a glass lid, with metal just to seal it.
ToadieOdie's avatar
Maybe one of those mason type jars with the rubber ring seals? The kind I'm talking about has a dome glass lid. I mean there are all kinds of them. Some have a metal ring snap type of closure - which might actually work better for the story you have with the image here. 

Here's a google image link full of them:
www.bing.com/images/search?q=m…

The kind I first mentioned has a gasket seal with the metal snap rings like this: 
images.bonanzastatic.com/afu/i…

Not saying you have to design them like these canning jars. Just suggesting that these designs might provide a means for your wisps to survive better with a little fiddling. I see in some of these images that there are some basket style lids with rings on top as well. There are plenty of ideas here to tinker with.
vasilnatalie's avatar
Yeah, something like that, but a little more permanently sealed.  I was mainly thinking that the metal would corrode more quickly than the glass would, and you'd need a way to replace the metal without letting the wisps out.  And it would be nice to have some light out the top, too-- you could always build some reflectors around it for a bullseye lantern.

But of course, various luminaries could have different techniques.
ToadieOdie's avatar
Okay so, in order for the glass top with a metal band to work would the band need to be soldered on?
vasilnatalie's avatar
I don't think so-- it would be like a glass lidded mason jar, where the metal just acted to secure the lid to the top.
ToadieOdie's avatar
So the metal ring bands that screw on, and instead of the metal lid plates that rests on the glass lip of the jar, there is a glass one?
vasilnatalie's avatar
That's what I was thinking.  And a cork.  For the meat.
View all replies
anonymous's avatar
Join the community to add your comment. Already a deviant? Log In