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Storm Glass
The storm glass or chemical weather glass is an instrument proposed as a method for predicting weather. It consists of a special liquid placed inside a sealed transparent glass. The state of crystallization within the liquid was believed to be related to the weather. The inventor is unknown but the device became popular in the 1860s after being promoted by Royal Navy Admiral Robert FitzRoy who claimed that The compositions of the liquid in a storm glass varies but usually contains "camphor, nitrate of potassium and sal-ammoniac, dissolved by alcohol, with water and some air." These devices are now known to have little value in weather prediction but continue to be a curiosity. Description The liquid within the glass is a mixture of several ingredients, most commonly distilled water, ethanol, potassium nitrate, ammonium chloride, and camphor. This specific mixture was promoted by Admiral Robert FitzRoy although similar devices existed even two decades earlier with variants in Ita ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Storm Glass General View
A storm is any disturbed state of the natural environment or the atmosphere of an Astronomy, astronomical body. It may be marked by significant disruptions to normal conditions such as strong wind, tornadoes, hail, thunder and lightning (a thunderstorm), heavy Precipitation (meteorology), precipitation (snowstorm, rainstorm), heavy freezing rain (ice storm), strong winds (tropical cyclone, windstorm), wind transporting some Chemical substance, substance through the Earth's atmosphere, atmosphere such as in a dust storm, among other forms of severe weather. Storms have the potential to harm lives and property via storm surge, heavy rain or snow causing flooding or road impassibility, lightning, wildfires, and vertical and horizontal wind shear. Systems with significant rainfall and duration help alleviate drought in places they move through. Heavy snowfall can allow special recreational activities to take place which would not be possible otherwise, such as skiing and snowmobilin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Snow
Snow comprises individual ice crystals that grow while suspended in the atmosphere—usually within clouds—and then fall, accumulating on the ground where they undergo further changes. It consists of frozen crystalline water throughout its life cycle, starting when, under suitable conditions, the ice crystals form in the atmosphere, increase to millimeter size, precipitate and accumulate on surfaces, then metamorphose in place, and ultimately melt, slide or sublimate away. Snowstorms organize and develop by feeding on sources of atmospheric moisture and cold air. Snowflakes nucleate around particles in the atmosphere by attracting supercooled water droplets, which freeze in hexagonal-shaped crystals. Snowflakes take on a variety of shapes, basic among these are platelets, needles, columns and rime. As snow accumulates into a snowpack, it may blow into drifts. Over time, accumulated snow metamorphoses, by sintering, sublimation and freeze-thaw. Where the climate is co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tempest Prognosticator
The tempest prognosticator, also known as the leech barometer, is a 19th-century invention by George Merryweather in which leeches are used in a barometer. The twelve leeches are kept in small bottles inside the device; when they become agitated by an approaching storm they attempt to climb out of the bottles and trigger a small hammer which strikes a bell. The likelihood of a storm is indicated by the number of times the bell is struck. Invention and development Dr. Merryweather, honorary curator of the Whitby Literary and Philosophical Society's Museum, detailed the sensitivity that medicinal leeches displayed in reaction to electrical conditions in the atmosphere. He was inspired by two lines from Edward Jenner's poem ''Signs of Rain'': "The leech disturbed is newly risen; Quite to the summit of his prison."The Weekly Dispatch. 22 March 1851.London: The Great Exhibition". Accessed 22 January 2007. Merryweather spent much of 1850 developing his ideas and came up with six ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Journal Of Crystal Growth
The ''Journal of Crystal Growth'' is a semi-monthly peer-reviewed scientific journal covering experimental and theoretical studies of crystal growth and its applications. It is published by Elsevier and the editor-in-chief is J. Derby (University of Minnesota). History The ''Journal of Crystal Growth'' was founded following the 1966 International Conference on Crystal Growth (ICCG) held in Boston, Massachusetts, United States. Ichiro Sunagawa, who participated in ICCG, wrote in the ''Journal of the Japanese Association of Crystal Growth'' that before then, "The crystal growth community was totally fragmented and had remained as a peripheral field at the mercy of other organizations." Michael Schieber (Hebrew University) later recounted feeling the need for an individual journal on the subject after the conference proceedings were published as a supplement to the ''Journal of Physics and Chemistry of Solids'' that had to be additionally ordered by journal subscribers. Feeling as t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thermometer
A thermometer is a device that temperature measurement, measures temperature or a temperature gradient (the degree of hotness or coldness of an object). A thermometer has two important elements: (1) a temperature sensor (e.g. the bulb of a mercury-in-glass thermometer or the pyrometric sensor in an infrared thermometer) in which some change occurs with a change in temperature; and (2) some means of converting this change into a numerical value (e.g. the visible scale that is marked on a mercury-in-glass thermometer or the digital readout on an infrared model). Thermometers are widely used in technology and industry to monitor processes, in meteorology, in medicine, and in scientific research. History While an individual thermometer is able to measure degrees of hotness, the readings on two thermometers cannot be compared unless they conform to an agreed scale. Today there is an absolute thermodynamic temperature scale. Internationally agreed temperature scales are designed to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thermoscope
A thermoscope is a device that shows changes in temperature. A typical design is a tube in which a liquid rises and falls as the temperature changes. The modern thermometer gradually evolved from it with the addition of a scale in the early 17th century and standardisation throughout the 17th and 18th centuries. Function Devices employing both heat and pressure were common during Galileo's time, used for fountains, nursing, or bleeding in medicine. The device was built from a small vase filled with water, attached to a thin vertically rising pipe, with a large empty glass ball at the top. Changes in temperature of the upper ball would exert positive or negative pressure on the water below, causing it to rise or lower in the thin column. The device established fixed points but does not measure specific quantity, although it can tell when something is warmer than another thing. Essentially, thermoscopes served as a justification of sorts regarding what is observed or experienced ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Charles Tomlinson (scientist)
Charles Tomlinson (1808 – 1897), was a scientist who published papers on meteorology and the physical properties of liquids. Biography He studied science under George Birkbeck, the founder of the London Mechanics' Institute. For a while, he had a school with his brother Lewis, at Salisbury. Becoming known for original investigation, he was called to London, where he was appointed lecturer on experimental science at King's College School. During the 1840s and 1850s he published several notable scientific works relating to phenomena of the weather for the Society for Promoting Christian Knowledge. In 1872 he was elected to the Royal Society, and in 1874 he took a leading part in founding the Physical Society. As a scientist Tomlinson made valuable contributions to the knowledge of the surface tension of liquids. His last years were devoted to literature, and he held the Dante lectureship at University College 1878–1880. He was also an avid chess player and published a book o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
British Crown
The Crown is the state (polity), state in all its aspects within the jurisprudence of the Commonwealth realms and their subdivisions (such as the Crown Dependencies, British Overseas Territories, overseas territories, Provinces and territories of Canada#Provinces, provinces, or states and territories of Australia, states). Legally ill-defined, the term has different meanings depending on context. It is used to designate the monarch in either a personal capacity, as Head of the Commonwealth, or as the king or queen of their realms (whereas the monarchy of the United Kingdom and the monarchy of Canada, for example, are distinct although they are in personal union). It can also refer to the rule of law; however, in common parlance 'The Crown' refers to the functions of executive (government), government and the civil service. Thus, in the United Kingdom (one of the Commonwealth realms), the government of the United Kingdom can be distinguished from the Crown and the state, in prec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Storm Glass Hicks
A storm is any disturbed state of the natural environment or the atmosphere of an astronomical body. It may be marked by significant disruptions to normal conditions such as strong wind, tornadoes, hail, thunder and lightning (a thunderstorm), heavy precipitation (snowstorm, rainstorm), heavy freezing rain (ice storm), strong winds (tropical cyclone, windstorm), wind transporting some substance through the atmosphere such as in a dust storm, among other forms of severe weather. Storms have the potential to harm lives and property via storm surge, heavy rain or snow causing flooding or road impassibility, lightning, wildfires, and vertical and horizontal wind shear. Systems with significant rainfall and duration help alleviate drought in places they move through. Heavy snowfall can allow special recreational activities to take place which would not be possible otherwise, such as skiing and snowmobiling. The English word comes from Proto-Germanic ''*sturmaz'' meaning "noise, tumu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Frost
Frost is a thin layer of ice on a solid surface, which forms from water vapor in an above-freezing atmosphere coming in contact with a solid surface whose temperature is below freezing, and resulting in a phase change from water vapor (a gas) to ice (a solid) as the water vapor reaches the freezing point. In temperate climates, it most commonly appears on surfaces near the ground as fragile white crystals; in cold climates, it occurs in a greater variety of forms. The propagation of crystal formation occurs by the process of nucleation. The ice crystals of frost form as the result of fractal process development. The depth of frost crystals varies depending on the amount of time they have been accumulating, and the concentration of the water vapor (humidity). Frost crystals may be invisible (black), clear (translucent), or white; if a mass of frost crystals scatters light in all directions, the coating of frost appears white. Types of frost include crystalline frost (hoar fro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thunderstorm
A thunderstorm, also known as an electrical storm or a lightning storm, is a storm characterized by the presence of lightning and its acoustic effect on the Earth's atmosphere, known as thunder. Relatively weak thunderstorms are sometimes called thundershowers. Thunderstorms occur in a type of cloud known as a cumulonimbus. They are usually accompanied by strong winds and often produce heavy rain and sometimes snow, sleet, or hail, but some thunderstorms produce little precipitation or no precipitation at all. Thunderstorms may line up in a series or become a rainband, known as a squall line. Strong or severe thunderstorms include some of the most dangerous weather phenomena, including large hail, strong winds, and tornadoes. Some of the most persistent severe thunderstorms, known as supercells, rotate as do cyclones. While most thunderstorms move with the mean wind flow through the layer of the troposphere that they occupy, vertical wind shear sometimes causes a de ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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