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Photuris Pennsylvanica
''Photuris pensylvanica'', known by the common names Pennsylvania firefly, lightning bug, dot-dash firefly and (in its larval state) glowworm, is a species of firefly from the United States and Canada. It is also widely known under the Latin name ''Photuris pennsylvanica'', although the original spelling, with one "n", was common in Latinized names of the time and remains the valid name. Description ''P. pensylvanica'' is a somewhat flattened beetle to in length. Its primary color is black, but it has two bright red eyespots on its thorax, as well as yellow edging on its thorax and wing cases and usually a lengthwise yellow stripe partway down the center of each of the latter. The species is carnivorous, feeding mostly on insects but also on other invertebrates, such as land snails and earthworms. The terminal segments of its abdomen are white-yellow and glow greenish-yellow when the insect manifests its bioluminescence. The females of this species, like those of other members ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Charles De Geer
Baron Charles de Geer (the family is usually known as De Geer with a capitalized "De" and is pronounced "de yer"); Finspång in Risinge 30 January 1720 – Stockholm 7 March 1778) was a Swedish industrialist and entomologist. Life De Geer, who came from a family with strong Dutch connections, grew up in Utrecht from the age of three. He returned to Sweden at the age of 19. He had inherited the entailed manor and important iron-works of Leufsta (Lövsta) in Uppland from his childless uncle and namesake and would substantially increased the wealth of the estate. Ever since he had received a present of some silk worms at the age of eight, he had an interest in entomology and became a respected amateur entomologist at an early age. His major work was the ''Mémoires pour servir à l'histoire des insectes'' (eight volumes, 1752-1778). He was elected a member of the Royal Swedish Academy of Sciences already in 1739, at the age of nineteen, and a corresponding member of the Fren ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bioluminescence
Bioluminescence is the production and emission of light by living organisms. It is a form of chemiluminescence. Bioluminescence occurs widely in marine vertebrates and invertebrates, as well as in some fungi, microorganisms including some bioluminescent bacteria, and terrestrial arthropods such as fireflies. In some animals, the light is bacteriogenic, produced by symbiotic bacteria such as those from the genus ''Vibrio''; in others, it is autogenic, produced by the animals themselves. In a general sense, the principal chemical reaction in bioluminescence involves a light-emitting molecule and an enzyme, generally called luciferin and luciferase, respectively. Because these are generic names, luciferins and luciferases are often distinguished by the species or group, e.g. firefly luciferin. In all characterized cases, the enzyme catalyzes the oxidation of the luciferin. In some species, the luciferase requires other cofactors, such as calcium or magnesium ions, and somet ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Commemorative Plaque
A commemorative plaque, or simply plaque, or in other places referred to as a historical marker, historic marker, or historic plaque, is a plate of metal, ceramic, stone, wood, or other material, typically attached to a wall, stone, or other vertical surface, and bearing text or an image in relief, or both, to commemorate one or more persons, an event, a former use of the place, or some other thing. Many modern plaques and markers are used to associate the location where the plaque or marker is installed with the person, event, or item commemorated as a place worthy of visit. A monumental plaque or tablet commemorating a deceased person or persons, can be a simple form of church monument. Most modern plaques affixed in this way are commemorative of something, but this is not always the case, and there are purely religious plaques, or those signifying ownership or affiliation of some sort. A plaquette is a small plaque, but in English, unlike many European languages, the term is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bronze
Bronze is an alloy consisting primarily of copper, commonly with about 12–12.5% tin and often with the addition of other metals (including aluminium, manganese, nickel, or zinc) and sometimes non-metals, such as phosphorus, or metalloids such as arsenic or silicon. These additions produce a range of alloys that may be harder than copper alone, or have other useful properties, such as ultimate tensile strength, strength, ductility, or machinability. The three-age system, archaeological period in which bronze was the hardest metal in widespread use is known as the Bronze Age. The beginning of the Bronze Age in western Eurasia and India is conventionally dated to the mid-4th millennium BCE (~3500 BCE), and to the early 2nd millennium BCE in China; elsewhere it gradually spread across regions. The Bronze Age was followed by the Iron Age starting from about 1300 BCE and reaching most of Eurasia by about 500 BCE, although bronze continued to be much more widely used than it is in mod ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Milton J
Milton may refer to: Names * Milton (surname), a surname (and list of people with that surname) ** John Milton (1608–1674), English poet * Milton (given name) ** Milton Friedman (1912–2006), Nobel Prize, Nobel laureate in Economics, author of ''Free to Choose'' Places Australia * Milton, New South Wales * Milton, Queensland, a suburb of Brisbane ** Milton Courts, a tennis centre ** Milton House, Milton, a heritage-listed house ** Milton railway station, Brisbane ** Milton Reach, a reach of the Brisbane River ** Milton Road, an arterial road in Brisbane Canada * Milton, Newfoundland and Labrador * Milton, Nova Scotia in the Region of Queens Municipality * Milton, Ontario ** Milton line, a commuter train line ** Milton GO Station * Milton (electoral district), Ontario ** Milton (provincial electoral district), Ontario * Beaverton, Ontario a community in Durham Region and renamed as Beaverton in 1835 * Rural Municipality of Milton No. 292, Saskatchewan New Zealand * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Governors Of Pennsylvania
The governor of the Commonwealth of Pennsylvania is the head of state and head of government of the U.S. state, Commonwealth of Pennsylvania, as well as commander-in-chief of the Commonwealth's military forces. The governor has a duty to enforce state laws and the power to approve or veto bills passed by the Pennsylvania Legislature and to convene the legislature. The governor may grant pardons except in cases of impeachment, but only when recommended by the Board of Pardons. There have been seven presidents and 47 governors of Pennsylvania, with two governors (Robert E. Pattison and Gifford Pinchot) serving non-consecutive terms, totaling 55 terms in both offices. The longest term was that of the first governor, Thomas Mifflin, who served three full terms as governor in addition to two years as President of the Continental Congress. The shortest term belonged to John Bell, who served only 19 days as acting governor after his predecessor, Edward Martin resigned. The curren ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bumper Sticker
A bumper sticker is an adhesive label or sticker with a message, intended to be attached to the bumper of an automobile and to be read by the occupants of other vehicles—although they are often stuck onto other objects. Most bumper stickers are about 25.4 cm by 7.6 cm (10 in by 3 in) and are often made of PVC. Purpose Bumper stickers can be commercial, religious, secular, humorous, or in support of a sports team or other organization. They may promote or oppose a particular philosophical or political position. In some countries, such as the United States, bumper stickers are a popular way of showing support for a candidate for a government seat and become more common during election years. In others, such as the United Kingdom, they are rarely seen in any form. One variety of bumper sticker is the country tag. This is typically used for cars crossing international borders, and is overseen by the United Nations as the ''Distinguishing Signs of Vehicles in Internati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Legislator
A legislator (also known as a deputy or lawmaker) is a person who writes and passes laws, especially someone who is a member of a legislature. Legislators are often elected by the people of the state. Legislatures may be supra-national (for example, the European Parliament), national (for example, the United States Congress), or local (for example, local authorities). Overview The political theory of the separation of powers requires legislators to be independent individuals from the members of the executive and the judiciary. Certain political systems adhere to this principle, others do not. In the United Kingdom, for example, the executive is formed almost exclusively from legislators (members of Parliament) although the judiciary is mostly independent (until reforms in 2005, the Lord Chancellor uniquely was a legislator, a member of the executive - indeed, the Cabinet - and a judge, while until 2009 the Lords of Appeal in Ordinary were both judges and legislators as membe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fairyland
Fairyland (''Faerie'', Scottish ''Elfame'', c.f. Old Norse ''Álfheimr'') in English and Scottish folklore is the fabulous land or abode of fairies or ''fays''. Old French (Early Modern English ) referred to an illusion or enchantment, the land of the ''faes''. Modern English (by the 17th century) ''fairy'' transferred the name of the realm of the ''fays'' to its inhabitants, e.g. the expression ''fairie knight'' in Edmund Spenser's ''The Faerie Queene'' refers to a "supernatural knight" or a "knight of Faerie" but was later re-interpreted as referring to a knight who is "a fairy". Folklore Fairyland may be referred to simply as ''Fairy'' or ''Faerie'', though that usage is an archaism. It is often the land ruled by the " Queen of Fairy" and thus anything from fairyland is also sometimes described as being from the "Court of the Queen of " or from the Seelie court in Scottish folklore. The Scots word or ' "fairyland" has other variant forms, attested in Scottish witch trials, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Upper Darby, Pennsylvania
Upper Darby Township, often shortened to Upper Darby, is a home rule township in Delaware County, Pennsylvania. The township borders Philadelphia, the nation's sixth most populous city as of 2020 with 1.6 million residents. As of the 2020 census, the township had a total population of 85,681, making it the sixth most populated city or borough in Pennsylvania, after Philadelphia, Pittsburgh, Allentown, Reading, and Erie. Upper Darby is 65% residential, 25% commercial, and 8% other. Upper Darby is home to the Tower Theater, a historic music venue on 69th Street built in the 1920s, and is also home to several Underground Railroad sites. Upper Darby's population is diverse, representing over 100 ethnic cultures. The township hosts a range of housing types including densely populated rowhouse sections similar to houses in neighboring West Philadelphia, tree-lined neighborhoods of turn-of-the-century single-family houses and mid-century developments. Because of a home-rule c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Students
A student is a person enrolled in a school or other educational institution. In the United Kingdom and most commonwealth countries, a "student" attends a secondary school or higher (e.g., college or university); those in primary or elementary schools are "pupils". Africa Nigeria In Nigeria, education is classified into four system known as a 6-3-3-4 system of education. It implies six years in primary school, three years in junior secondary, three years in senior secondary and four years in the university. However, the number of years to be spent in university is mostly determined by the course of study. Some courses have longer study length than others. Those in primary school are often referred to as pupils. Those in university, as well as those in secondary school, are referred to as students. The Nigerian system of education also has other recognized categories like the polytechnics and colleges of education. The Polytechnic gives out National Diploma and Higher Nation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grade School
A primary school (in Ireland, the United Kingdom, Australia, Trinidad and Tobago, Jamaica, and South Africa), junior school (in Australia), elementary school or grade school (in North America and the Philippines) is a school for primary education of children who are four to eleven years of age. Primary schooling follows pre-school and precedes secondary schooling. The International Standard Classification of Education considers primary education as a single phase where programmes are typically designed to provide fundamental skills in reading, writing, and mathematics and to establish a solid foundation for learning. This is ISCED Level 1: Primary education or first stage of basic education.Annex III in the ISCED 2011 English.pdf Navigate to International Standard Classification of Educati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
