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WWI Gas Mask
A gas mask is a piece of personal protective equipment used to protect the wearer from inhaling airborne pollutants and toxic gases. The mask forms a sealed cover over the nose and mouth, but may also cover the eyes and other vulnerable soft tissues of the face. Most gas masks are also respirators, though the word ''gas mask'' is often used to refer to military equipment (such as a field protective mask), the scope used in this article. Gas masks only protect the user from ingesting or inhaling chemical agents, as well as preventing contact with the user's eyes (many chemical agents affect through eye contact). Most combined gas mask filters will last around 8 hours in a biological or chemical situation. Filters against specific chemical agents can last up to 20 hours. Airborne toxic materials may be gaseous (for example, chlorine or mustard gas), or particulates (such as biological agents). Many filters provide protection from both types. The first gas masks mostly used ci ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Elastomeric Respirator
Elastomeric respirators, also called reusable air-purifying respirators, seal to the face with elastomeric material, which may be a Natural rubber, natural or synthetic rubber. They are generally reusable. Full-face versions of elastomeric respirators seal better and protect the eyes. Elastomeric respirators consist of a reusable mask that seals to the face, with exchangeable filters. Elastomeric respirators can be used with chemical cartridge filters that remove gases, Mechanical filter (respirator), mechanical filters that retain particulate matter, or both. As particulate filters, they are comparable (or, due to the quality and error-tolerance of the elastomeric seal, possibly superior) to filtering facepiece respirators such as most ''disposable'' N95 respirators and FFP masks. Elastomeric air-purifying respirators are designed to be safely reused for years. Provided the cartridge integrity and filter have not been compromised, current practice shows that the filters could b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jean-François Pilâtre De Rozier
Jean-François Pilâtre de Rozier () (30 March 1754 – 15 June 1785) was a French chemistry and physics teacher, and one of the first pioneers of aviation. He made the first manned free balloon flight with François Laurent d'Arlandes on 21 November 1783, in a Montgolfier balloon. He later died when his balloon crashed near Wimereux in the Pas-de-Calais during an attempt to fly across the English Channel. He and his companion Pierre Romain thus became the first known fatalities in an air crash. Early life He was born in Metz, the third son of Magdeleine Wilmard and Mathurin Pilastre, known as "de Rozier", a former soldier who became an innkeeper. His interests in the chemistry of drugs had been awakened in the military hospital of Metz, an important garrison town on the border of France. He made his way to Paris at the age of 18, then taught physics and chemistry at the Academy in Reims, which brought him to the attention of the Comte de Provence, brother of King Louis XVI. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cluny Macpherson (physician)
Colonel Cluny Macpherson (March 18, 1879 – November 16, 1966) was a physician and the inventor of an early gas mask. After World War I he served as the president of the St. John's Clinical Society and the Newfoundland Medical Association. Early life Cluny Macpherson was born in St. John's, Newfoundland to Campbell Macpherson and Emma Duder. He had a brother, Harold. Macpherson received his early education at Methodist College and at the McGill University Faculty of Medicine from 1897–1901 where he earned his degree in Medicine. He also volunteered with the Royal National Mission to Deep Sea Fishermen, which later became known as the Grenfell Mission. Macpherson began his medical career at the Royal Infirmary of Edinburgh. In 1902 he returned to Newfoundland joining the Labrador Mission begun by Dr. Wilfred Grenfell and ran the hospital in Battle Harbour. Remaining there until 1904. He also served as a special constable and justice of the peace. Macpheron later became a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John Scott Haldane
John Scott Haldane (; 2 May 1860 – 14/15 March 1936) was a Scottish physician physiologist and philosopher famous for intrepid self-experimentation which led to many important discoveries about the human body and the nature of gases. He also experimented on his son, the celebrated and polymathic biologist J. B. S. Haldane, even when he was quite young. Haldane locked himself in sealed chambers breathing potentially lethal cocktails of gases while recording their effect on his mind and body. Haldane visited the scenes of many mining disasters and investigated their causes. When the Germans used poison gas in World War I, Haldane went to the front at the request of Lord Kitchener and attempted to identify the gases being used. One outcome of this was his invention of a respirator, known as the black veil. Haldane's investigations into decompression sickness resulted in the concept of staged decompression, and the first reasonably reliable decompression tables, and his m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Black Veil Respirator
The Black Veil Respirator was an early British gas mask designed by John Scott Haldane and introduced in May 1915. History The German army used chlorine as a poison gas for the first time against Allied troops at the Second Battle of Ypres on 22 April 1915. As an immediate response, the British began issuing cotton wool wrapped in muslin to its troops by 3 May. This was followed by the Black Veil Respirator, invented by John Scott Haldane. The Black Veil was a cotton pad soaked in an absorbent solution which was secured over the mouth using black cotton veiling. The mask was treated in a solution of sodium hyposulphate, sodium carbonate, glycerine Glycerol () is a simple triol compound. It is a colorless, odorless, sweet-tasting, viscous liquid. The glycerol backbone is found in lipids known as glycerides. It is also widely used as a sweetener in the food industry and as a humectant in ... and water. The solution retained sufficient moisture so that it was unnecessary to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Second Battle Of Ypres
The Second Battle of Ypres was fought from 22 April – 25 May 1915, during the First World War, for control of the tactically-important high ground to the east and the south of the Flanders, Flemish town of Ypres, in western Belgium. The First Battle of Ypres had been fought the previous autumn. The Second Battle of Ypres was the first mass use by Germany of Chemical weapon, poison gas on the Western Front (World War I), Western Front. Background The Germans, German chemist Walther Nernst, who in 1914 was a volunteer driver, proposed to Colonel Max Bauer, the German general staff officer responsible for liaison with scientists, that they could empty the opposing trenches by a surprise attack with tear gas. Observing a field test of this idea, the chemist Fritz Haber instead proposed using heavier-than-air chlorine gas. The German commander Erich von Falkenhayn agreed to try the new weapon but intended to use it in a diversionary attack by the 4th Army (German Empire), 4t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chemical Weapon
A chemical weapon (CW) is a specialized munition that uses chemicals formulated to inflict death or harm on humans. According to the Organisation for the Prohibition of Chemical Weapons (OPCW), this can be any chemical compound intended as a weapon "or its precursor that can cause death, injury, temporary incapacitation or sensory irritation through its chemical action. Munitions or other delivery devices designed to deliver chemical weapons, whether filled or unfilled, are also considered weapons themselves." Chemical weapons are classified as weapons of mass destruction (WMD), though they are distinct from nuclear weapons, biological weapons, and radiological weapons. All may be used in warfare and are known by the military acronym NBC (for nuclear, biological, and chemical warfare). Weapons of mass destruction are distinct from conventional weapons, which are primarily effective due to their explosive, kinetic, or incendiary potential. Chemical weapons can be widely ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chemical Weapons In World War I
The use of toxic chemicals as weapons dates back thousands of years, but the first large-scale use of chemical weapons was during World War I. They were primarily used to demoralize, injure, and kill entrenched defenders, against whom the indiscriminate and generally very slow-moving or static nature of gas clouds would be most effective. The types of weapons employed ranged from disabling chemicals, such as tear gas, to lethal agents like phosgene, chlorine, and mustard gas. These chemical weapons caused medical problems. This chemical warfare was a major component of the first global war and first total war of the 20th century. Gas attack left a strong psychological impact, and estimates go up to about 90,000 fatalities and a total of about 1.3 million casualties. However, this would amount to only 3-3.5% of overall casualties, and gas was unlike most other weapons of the period because it was possible to develop countermeasures, such as gas masks. In the later stages o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bundesarchiv Bild 183-R52907, Mannschaft Mit Gasmasken Am Fla-MG
The German Federal Archives or Bundesarchiv (BArch) (, lit. "Federal Archive") are the national archives of Germany. They were established at the current location in Koblenz in 1952. They are subordinated to the Federal Commissioner for Culture and the Media ( Claudia Roth since 2021) under the German Chancellery, and before 1998, to the Federal Ministry of the Interior. On 6 December 2008, the Archives donated 100,000 photos to the public, by making them accessible via Wikimedia Commons. History The federal archive for institutions and authorities in Germany, the first precursor to the present-day Federal Archives, was established in Potsdam, Brandenburg in 1919, a later date than in other European countries. This national archive documented German government dating from the founding of the North German Confederation in 1867. It also included material from the older German Confederation and the Imperial Chamber Court. The oldest documents in this collection dated back to the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Garrett Morgan
Garrett Augustus Morgan Sr. (March 4, 1877 – July 27, 1963) was an American inventor, businessman, and community leader. His most notable inventions were a type of three-way traffic light in 1923, and a protective 'smoke hood' notably used in a 1916 tunnel construction disaster rescue. Morgan also discovered and developed a chemical hair-processing and straightening solution. He created a successful company called "G. A. Morgan Hair Refining Company" based on his hair product inventions and a complete line of hair care products. He was involved in African Americans' civic and political advancement, especially in and around Cleveland, Cleveland, Ohio. Early life and education Morgan was born in 1877 in Paris, Kentucky, an almost exclusively African American community. His father was Sydney Morgan, a son and freed slave of Confederate States Army, Confederate General John Hunt Morgan, John H. Morgan of Morgan's Raiders. His mother, also a freed slave, was Elizabeth Reed, daughter ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Louisville, Kentucky
Louisville is the List of cities in Kentucky, most populous city in the Commonwealth of Kentucky, sixth-most populous city in the Southeastern United States, Southeast, and the list of United States cities by population, 27th-most-populous city in the United States. By land area, it is the country's List of United States cities by area, 24th-largest city; however, by population density, it is the 265th most dense city. Louisville is the historical county seat and, since 2003, the nominal seat of Jefferson County, Kentucky, Jefferson County, on the Indiana border. Since 2003, Louisville and Jefferson County have shared the same borders following a consolidated city-county, city-county merger. The consolidated government is officially called the Louisville/Jefferson County Metro Government, commonly known as Louisville Metro. The term "Jefferson County" is still used in some contexts, especially for Louisville neighborhoods#Incorporated places, incorporated cities outside the "Lou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lewis P
Lewis may refer to: Names * Lewis (given name), including a list of people with the given name * Lewis (surname), including a list of people with the surname Music * Lewis (musician), Canadian singer * " Lewis (Mistreated)", a song by Radiohead from ''My Iron Lung'' Places * Lewis (crater), a crater on the far side of the Moon * Isle of Lewis, the northern part of Lewis and Harris, Western Isles, Scotland United States * Lewis, Colorado * Lewis, Indiana * Lewis, Iowa * Lewis, Kansas * Lewis Wharf, Boston, Massachusetts * Lewis, Missouri * Lewis, Essex County, New York * Lewis, Lewis County, New York * Lewis, North Carolina * Lewis, Vermont * Lewis, Wisconsin Ships * USS ''Lewis'' (1861), a sailing ship * USS ''Lewis'' (DE-535), a destroyer escort in commission from 1944 to 1946 Science * Lewis structure, a diagram of a molecule that shows the bonding between the atoms * Lewis acids and bases * Lewis antigen system, a human blood group system * Lewis number, a dim ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
