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Clinical and toxicological research conducted on volcanic crystalline silica has found little to no evidence of its ability to cause silicosis/pneumoconiosis-like diseases and geochemical analyses have shown that there are inherent factors in the crystalline structure which may render volcanic crystalline silica much less pathogenic than some ...
Corbett's electrostatic machine. Corbett's electrostatic machine is a static electricity generating device that was made by the Shaker physician Thomas Corbett in 1810. Intended to treat rheumatism, [1] the device built up a static charge and stored it in a Leyden jar, an early type of capacitor.
Machines that generated static electricity with a glass disc were popular and widespread in Europe by 1740. [3] In 1745, German cleric Ewald Georg von Kleist and Dutch scientist Pieter van Musschenbroek discovered independently that the electric charge from these machines could be stored in a Leyden jar , named after the city of Leiden in the ...
This is a list of the world's largest machines, both static and movable in history. Building structure. Ground vehicles. Mining vehicles. Model Type Length ...
1759 North America measles outbreak 1759 North America Measles: Unknown [109] 1760 Charleston smallpox epidemic 1760 Charleston, British North America: Smallpox: 730–940 [110] [111] 1762 Havana yellow fever epidemic 1762 Havana, Cuba: Yellow fever: 8,000 [106] 1763 Pittsburgh area smallpox outbreak 1763 North America, present-day Pittsburgh ...
The largest air-insulated Van de Graaff generator in the world, built by Dr. Van de Graaff in the 1930s, is now displayed permanently at Boston's Museum of Science. With two conjoined 4.5 m (15 ft) aluminium spheres standing on columns 22 ft (6.7 m) tall, this generator can often obtain 2 MV (2 million volts).
List of endocrine diseases; List of eponymous diseases; List of eye diseases and disorders; List of intestinal diseases; List of infectious diseases; List of human disease case fatality rates; List of notifiable diseases - diseases that should be reported to public health services, e.g., hospitals. Lists of plant diseases; List of pollution ...
Human infectious diseases may be characterized by their case fatality rate (CFR), the proportion of people diagnosed with a disease who die from it (cf. mortality rate).It should not be confused with the infection fatality rate (IFR), the estimated proportion of people infected by a disease-causing agent, including asymptomatic and undiagnosed infections, who die from the disease.