Historical Events tagged with "green spectral line"
Turns out history loves a label—battles, breakthroughs, and the occasional disaster, all neatly tagged for your browsing pleasure. Because sometimes you just need every weird invention in one place.
Science & Technology
Sir William Crookes Discovers Thallium
March 30th, 1861 163 years ago
In 1861, Sir William Crookes announced the discovery of thallium, a new chemical element. He identified it through his studies of uranium minerals, utilizing a spectroscope to analyze the emitted light and detect the unique spectral line characteristic of this element. Crookes's meticulous experimentation led him to isolate thallium, which he named after the Greek word for green, 'thallos', reflecting the bright green line in its spectrum. This discovery expanded the periodic table and contributed to the field of chemistry.
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