William Crookes British scientist, chemist and physicist. Date of Birth: 17.06.1832 Country: Great Britain

1. Biography of William Crookes
2. Early Life and Education
3. Professional Career
4. Scientific Discoveries
5. Later Life and Achievements
6. Later Years and Legacy

Biography of William Crookes

William Crookes was a British scientist, chemist, and physicist who dedicated his entire life to science. He made significant contributions in the fields of spectrography, vacuum tubes, radioactive elements, and selenium alloys. Many modern techniques and principles are based on his groundbreaking work.

Early Life and Education

William Crookes was born in London and was the eldest of 16 children of a local tailor. From 1850 to 1854, Crookes worked as an assistant at a college. During this time, he began developing his own research interests, focusing on selenium alloys instead of organic chemistry, in which his mentor August Wilhelm von Hofmann excelled. In 1851, Crookes published his first work on this subject.

Professional Career

In 1854, Crookes secured a position at the Radcliffe Observatory in Oxford, and in 1855, he became a lecturer at a British college. In the same year, he married Ellen Humphrey, and they had three sons and a daughter. After his marriage, Crookes settled in London and continued his research. In 1859, he founded the scientific journal "Chemical News" and served as one of its main editors.

Scientific Discoveries

In 1861, Crookes discovered a new element that emitted a bright green color on the spectrum, which he named "thallium". This discovery further solidified his reputation in scientific circles, and in 1863, he was admitted to the Royal Society. Crookes continued his experiments and became one of the pioneers in the study of vacuum tubes while investigating cathode rays. He developed the so-called "Crookes tubes" and made significant contributions to the understanding of plasma as the fourth state of matter in 1879.

Later Life and Achievements

Crookes continued his chemical experiments, often leading to incredible results. In 1895, he successfully isolated helium in the laboratory for the first time. His contributions did not go unnoticed, and he received numerous scientific and societal awards. In 1897, Crookes was knighted for his scientific achievements. In 1903, he began studying the recently discovered phenomenon of radioactivity. During his experiments, he successfully separated uranium from "uranium-X" (later identified as protactinium) and observed the emission of "p-particles" from radioactive substances. This observation played a crucial role in the study of radioactive elements.

Later Years and Legacy

In 1909, Crookes published a small work on diamonds, and the following year, he was honored with the Order of Merit. He passed away on April 4, 1919, two years after his wife. Crookes was buried in a London cemetery, leaving behind a lasting legacy in the field of science.