Substances & Homeopatic Remedies

Gallium metallicum

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Large amounts of gallium trichloride (GaCl3) have been gathered to build the Gallium Neutrino Observatory, an observatory located in Italy built to study particles called neutrinos which are produced inside the sun during the process of nuclear fusion.

Galistan thermometer.
Mercury thermometers have fallen out of favor especially for home use because mercury is toxic and thermometers are made of glass, which tends to break. Alcohol thermometers can be used, but for those who prefer a liquid metal look, a recent invention is the "galistan" thermometer, which uses a patented eutectic alloy of gallium, indium, and tin, liquid down to below the freezing point of water.
Unfortunately, like all gallium-indium alloys, it's kind of sticky, which makes it much less fun to play with than mercury. It's also hugely more expensive, which isn't a problem for the tiny amounts needed in a thermometer, but is a big problem if you want to make a few pounds of it to play with.


In this procedure, the doctor injects the radioactive chemical element gallium-67 into the patient's vein. The gallium collects at places in the body affected by sarcoidosis and other inflammatory conditions. Two days after the injection, the body is scanned for radioactivity. Increases in gallium uptake at any site in the body indicate that inflammatory activity has developed at the site and also give an idea of which tissue, and how much tissue, has been affected. However, since any type of inflammation causes gallium uptake, a positive gallium scan does not necessarily mean that the patient has sarcoidosis.