Con radioactive dating can only be used to date fossils older than approximately 50, years old. Pro The half life of radioactive substances are empirically determined. The ratio of the parent to daughter atoms can be used to determine an exact age given the assumptions that none of the original parent atoms have been eroded or lost during the time being calculated. Con All radioactive dating except Carbon 14 are based on atoms found in igneous rocks.
Debate: Radiometric Dating is Accurate | iztekgeb.com
Americium is a very low-activity radioactive element that emits alpha particles, a low-energy form of radiation. As air passes across the americium source within the detector, the radiation ionises any smoke particles. This ionised air is then picked up by an electronic sensor, sounding the alarm. A range of radioactive elements are used in the fight against cancer. The key factor is to accurately target the cancer cells and destroy them, while as far as possible avoiding exposing the rest of the body to radiation. For example, samarium is used to treat prostate cancer.
Sometime few educational blogs become very helpful while getting relevant and new information related to your targeted area. As I found this blog and appreciate the information delivered to my database. Meet Thai girls. In palaeontology and archaeology, it becomes necessary to determine the age of an artifact or fossil when it is uncovered.
Radiocarbon Dating: History and Process. Jessica Berti. Radiocarbon dating is one of the most significant scientific discoveries of the twentieth century.