Search results
Results from the WOW.Com Content Network
Sir William Crookes (/ k r ʊ k s /; 17 June 1832 – 4 April 1919) was an English chemist and physicist who attended the Royal College of Chemistry, [1] now part of Imperial College London, and worked on spectroscopy.
The spinthariscope was invented by William Crookes in 1903. [4] [5] While observing the apparently uniform fluorescence on a zinc sulfide screen created by the radioactive emissions (mostly alpha radiation) of a sample of radium bromide, he spilled some of the sample, and, owing to its extreme rarity and cost, he was eager to find and recover it. [6]
Half-length photographic portrait of William Crookes taken in 1856, when sitter was 24 years old. Plate from the biography of Sir William Crookes, a British chemist and physicist known for his work on spectroscopy.
The Crookes radiometer (also known as a light mill) consists of an airtight glass bulb containing a partial vacuum, with a set of vanes which are mounted on a spindle inside. The vanes rotate when exposed to light, with faster rotation for more intense light, providing a quantitative measurement of electromagnetic radiation intensity.
Katie King, Florence Cook and Sir William Crookes. Florence Eliza Cook (ca 1856 – 22 April 1904) was a medium who claimed to materialise a spirit, "Katie King".The question of whether the spirit was real or a fraud was a notable public controversy of the mid-1870s.
Katie King materialized, photograph of Sir William Crookes. Katie King, Florence Cook and Sir William Crookes. Katie King was the name given by Spiritualists in the 1870s to what they believed to be a materialized spirit. The question of whether the spirit was real or a fraud was a notable public controversy of the mid-1870s.
The FBI identified 20-year-old Thomas Matthew Crooks of Bethel Park, Pennsylvania as the suspect in Saturday's attempted assassination of former U.S. President Donald Trump at a campaign rally.
Keywords: William Crookes Credit line This file comes from Wellcome Images , a website operated by Wellcome Trust, a global charitable foundation based in the United Kingdom.