You could put them in the bathtub with hot water. You could run hot water over just one of them, this will cause it to expand just a little bit and should pop them apart. If you are where it is cold, you can set them outside and let them freeze. They will not cool at the same rate and that will pop them apart.
In my experience with furniture repair and refinishing I have found that I can dissolve wood glue 85% of the time with white vinegar. For the other 15% of the time when vinegar does not dissolve it, the glue can be softened with heat so that the pieces can be separated.
Vinegar method:
Use a spray bottle resistant to vinegar (some bottle spray mechanisms malfunction after exposed to vinegar for a while). An empty bottle of Heinz Fruit and Vegetable Wash is a good alternative.
Position the joint in a way that will allow the vinegar to infiltrate into the joint. Then spray the joint until the area is moist and let it sit. Continue to spray every 10-15 minutes to maintain the area moist with the vinegar. Every so often jiggle the pieces to assess progress. This process requires patience as it may take 1-2 hours to do its magic. After the glued pieces have separated, make sure to clean all trace of glue with additional vinegar and let it dry completely before proceeding with the work.
Heat method:
Moisten the area with water and then apply heat for about 30 seconds. If the area dries out while heating, spray again. Repeat this process until the glue softens and the pieces are not rigidly attached to each other and can be separated. Again, patience is necessary because this method may take 30 minutes to an hour of continuous work to do the trick. Make sure to remove all glue.
Try driving a metal putty knife between them. If that doesn't work, move on up to a prybar.
Stuck together.
Fart on them!
part of the crystals will be ruined no matter the method. physical separation is the best method. free the crystals together and shoot separate parts of them.
you would use magnetism to separate a mixture if the molecules are stuck together well
Bring the temp up and they will separate. Warm water.
The pieces stuck together. This is because there will be more of a chain reaction, so there will be more neutrons available to leak in the first place.
When raisins are stuck together, they can be pried apart manually (which is to say, you can do it with your fingers). If you would like to make them less sticky, you can coat them with flour.
If you are a container made of Glass and you are stuck together with some kind of water proof silicon then you probably are a tank.
When photographs are placed in a frame with glass, they will stick to the glass eventually because of temperature and humidity changes. The simple process of adding a mat to separate them from the glass eliminates this possibility. Once the photographs have stuck to the glass, they can not be removed without damaging them. If the frame falls and the glass breaks, it will also split the photograph. If you choose to have these photographs copied for other family members etc., they must be photographed thru the glass or pieced together if the glass has broken, a new photograph taken, and restoration work done where the cracks, tears, distortion and discoloration have altered the original image. Inkjet prints are another problem as without the mat, they will actually transfer the ink to the glass.
Normal float glass is toughened and the two pieces of toughened glasses stuck together with a multilayer PVB in between (lamination), to make bullet proof glass. Refer: http://theglassblog.wordpress.com/tag/glass-tempering/ https://theglassblog.wordpress.com/tag/laminated-glass/
heat them (with a lighter, or the oven or sumthin), then slide slowly away from each other.
Pouring hot water over the outer cup will cause it to expand and should release the inner one!