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Unprotected experiments in the U.S. in 1896 with an early X-ray tube (Crookes tube), when the dangers of radiation were largely unknown.The history of radiation protection begins at the turn of the 19th and 20th centuries with the realization that ionizing radiation from natural and artificial sources can have harmful effects on living organisms.
3 days ago · Ray Bidwell Collins (December 10, 1889 – July 11, 1965) was an American character actor in stock and Broadway theatre, radio, films, and television. With 900 stage roles to his credit, he became one of the most successful actors in the developing field of radio drama. A friend and associate of Orson Welles for many years, Collins went to ...
Apr 19, 2024 · Wikipedia, free Internet-based encyclopaedia, started in 2001, that operates under an open-source management style. It is overseen by the nonprofit Wikimedia Foundation. Wikipedia uses a collaborative software known as wiki that facilitates the creation and development of articles. Although some highly publicized problems have called attention ...
- The Editors of Encyclopaedia Britannica
Apr 2, 2024 · However a newly created visual graph representation of Wikipedia created by Adumb offers a compelling glimpse into the vast network of over 6.3 million articles and their nearly 200 million ...
6 days ago · Ibn al-Haytham. Ḥasan Ibn al-Haytham ( Latinized as Alhazen; / ælˈhæzən /; full name Abū ʿAlī al-Ḥasan ibn al-Ḥasan ibn al-Haytham أبو علي، الحسن بن الحسن بن الهيثم; c. 965 – c. 1040) was a medieval mathematician, astronomer, and physicist of the Islamic Golden Age from present-day Iraq.
Apr 10, 2024 · This very basic introduction to editing can be supplemented with this helpful pdf brochure from Wikipedia. You can also learn more through this free e-book by Phoebe Ayers, Charles Matthews, and Ben Yates (No Starch Press, 2008) for a more in-depth look at How Wikipedia Works, And How You Can Be a Part of It .
Apr 18, 2024 · Wilhelm Conrad Röntgen (born March 27, 1845, Lennep, Prussia [now Remscheid, Germany]—died February 10, 1923, Munich, Germany) was a physicist who received the first Nobel Prize for Physics, in 1901, for his discovery of X-rays, which heralded the age of modern physics and revolutionized diagnostic medicine. Röntgen studied at the ...
