Chinese Immigration and the Chinese Exclusion Acts. In the 1850s, Chinese workers migrated to the United States, first to work in the gold mines, but also to take agricultural jobs, and factory work, especially in the garment industry.
Medical Dosimetry. Medical dosimetry is a part of the field of radiation oncology involving knowledge of advanced mathematics, radiobiology, physics and anatomy. In order to shrink or eliminate tumor growth, some patients receive limited doses of radiation internally or externally.
A thermoluminescent dosimeter, or TLD, is a type of radiation dosimeter. A TLD measures ionizing radiation exposure by measuring the amount of visible light emitted from a crystal in the detector when the crystal is heated. The amount of light emitted is dependent upon the radiation exposure.