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A thing called The Amazing Hot Heart Massager, you snap a metal disk in it & it heats up. How does it work?
The Amazing Hot Heart Massager is a gel-filled, heart shaped pack used to give massages. There is a small metal disk floating in the gel, when you bend the disk, it snaps and the gel around the disk quickly heats up, turns to a crystalised material, and the heat quickly spreads through out the whole gel pack.
It stays hot for about an hour, then gets kind of hard. To reset it, you drop the pack into a pot of boiling water for 10 minutes. I’m sure there’s some sort of scientific explanation of it, I hope someone knows what I’m talking about and can tell me how it works.
I love this process. The liquid in the bag is most likely sodium acetate (added to salt ‘n vinegar potato chips to give them their tang -mmmm) as a super saturated solution. Most solids dissolved in water will increase their concentration as you raise the temperature of the water (think iced tea and hot tea). Some few substances will dissolve much more at a higher temperature than at room temperature and then not crystallize as you cool them down. Sodium acetate is such a chemical, sodium thiocyanate is one also, but is more toxic than sodium acetate. The function of the button in the bag was a puzzler to me until I looked up the patent. The button has a slit cut in it so that when you flex it you drive a stream of liquid up into the bulk of the solution upseting it and leading to the crystallization of the material. Just like you have to add heat to the crystallized supersaturated solution to get it to go back into solurion, the reverse,. coming out of solution gives heat back. Kind of like a heat battery. Neat stuff. Try putting “supersaturated sodium acetate” on a search engine.
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Question about Darvocet-N 100 Tab and Aspirin Please Help??
I have Horrible Headaches and Severe Back Pain from an injury at work and I am concerned about taking pain medicine. I had a blood test about a year ago and it came back normal for my kidney’s and liver. I take Headache Relief from walmart it has Aspirin, acetaminophen, and caffeine. And I take the Darvocet for the back pain and sometimes for the headaches. Also my urine changes from dark yellow to clear. Whats going on??? Also if you know of any natural alternative for pain would be helpful??? I have tried heat, cold, bio-freeze, icy hot, and massager’s, they help sometimes but very minimal. Thank you for your help 
your urine changes color depending on how much you are drinking. clear is good, not dehydrated. If it stays dark no matter how much you drink, that is one symptom of liver disease.
The aspirin acetaminophen and caffeine is not a very good idea in my opinion.
Take either or, not both. All the caffeine does is make it work faster and you can become addicted to caffeine and then get headaches from withdrawl of that.
Have you considered massage therapy or chiropractic exam for the injury at work?
That can sometimes do more good than more medications.
Physical therapy might also be worth looking into.
While “natural” pain medications may be out there, fixing the cause of the pain might be worth looking into first.
You may also be suffering from rebound headaches, which are from taking too much pain medication or taking too low of a dose too often.
IF your last doctors appointment was a while ago, it might be worth it to have another one and share your concerns with him.
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