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This day (march 30) in 1861
Discovery of the chemical elements: Sir William Crookes announces his discovery of thallium.
Discovery of the chemical elements: Sir William Crookes announces his discovery of thallium.
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Temporallube · M
Penny · 46-50, F
DESCRIPTION: Thallium was discovered by Sir William Crookes in 1861. It is a soft, heavy, inelastic metal. Thallium is tasteless and odorless and has been used by murderers as a difficult to detect poison. It is found in trace amounts in the earth’s crust. Thallium has not been produced in the United States since 1984, but is imported for use in the manufacture of electronics, low temperature thermometers, optical lenses, and imitation precious jewels. It also has use in some chemical reactions and medical procedures. Thallium was used historically as a rodenticide, but has since been banned in the United States due to its toxicity from accidental exposure.
from https://www.cdc.gov/niosh/ershdb/emergencyresponsecard_29750026.html
from https://www.cdc.gov/niosh/ershdb/emergencyresponsecard_29750026.html
JohnnySpot · 56-60, M
