
Natural Science |
The common raven (Corvus corax) is a large, all-black passerine bird and the most widely distributed of all corvids. Averaging 63 centimetres (25 inches) in length and 1.2 kilograms (2.6 pounds) in weight, these intelligent birds can live up to 21 years in the wild. They are commonly found in mythology, folklore, art, and literature.

Randarak |

Mercury is used in thermometers, barometers, manometers, sphygmomanometers, float valves, mercury switches, mercury relays, fluorescent lamps and other devices, though concerns about the element's toxicity have led to mercury thermometers and sphygmomanometers being largely phased out in clinical environments in favour of alternatives such as alcohol- or galinstan-filled glass thermometers and thermistor- or infrared-based electronic instruments. Likewise, mechanical pressure gauges and electronic strain gauge sensors have replaced mercury sphygmomanometers. Mercury remains in use in scientific research applications and in amalgam material for dental restoration in some locales. It is used in lighting: electricity passed through mercury vapor in a fluorescent lamp produces short-wave ultraviolet light which then causes the phosphor in the tube to fluoresce, making visible light.

David M Mallon |

David M Mallon wrote:Indeed it did.DungeonmasterCal wrote:Did it work?Aberzombie wrote:When he was a teenager, Anthony Edwards studied ballet with his childhood friend Eric Stoltz in Santa Barbara, California, so that "they could meet girls."A friend of mine did this in college.
Interesting...

![]() |

USS Colorado (BB-45) survived two kamikaze hits during the Battle of Leyte Gulf.
The Yokosuka "Ohka" MXY7 was a specially designed flying bomb developed expressly for kamikaze attacks. "The Cockpit" an anime directed by Leiji Matsomoto actually features a section dedicated to one of these pilots.
The Japanese dubbed it the Ohka after the cherry blossom, a usual symbol for the ephemeral nature of a samurai's life.
The Americans dubbed it the Baka-bomb, from the Japanese word for "fool," believing that the pilots were poor dumb idiots tricked into operating the suicide devices by their Japanese superiors.

Kajehase |

David M Mallon wrote:Indeed it did.DungeonmasterCal wrote:Did it work?Aberzombie wrote:When he was a teenager, Anthony Edwards studied ballet with his childhood friend Eric Stoltz in Santa Barbara, California, so that "they could meet girls."A friend of mine did this in college.
Taking French was less strenuous.

Natural Science |
Myotis escalerai is a European bat, found in Spain (including the Balearic Islands), Portugal, and far southern France. Although the species was first named in 1904, it was included in the Natterer's bat species (Myotis nattereri) until molecular studies in 2006 proved that the two are distinct. Similar to M. nattereri, it is mostly gray with lighter underparts, and of medium size, less than 9.5 g (0.3 oz). It has a pointed muzzle, a pink face, and long ears. The bat is an agile flyer, with rapid wingbeats and broad wings, 245 to 300 mm (9.6 to 11.8 in). Females start to aggregate in late spring in maternity colonies in caves, mines, tree holes, bridges or houses. Hibernation colonies need constant temperatures between 0 and 5 °C (32 and 41 °F), and are usually found in caves or basements.

Randarak |
1 person marked this as a favorite. |

Originally, Lola by the Kinks received backlash for its controversial lyrics. Talks of censorship began to arise, with some radio stations fading the track out before Lola's true gender was revealed. On 18 November 1970, the song was even banned in Australia because of "controversial subject matter." In a then-current Record Mirror article entitled "Sex Change Record: Kink Speaks", Ray Davies refused to tell Lola's true gender, saying, "It really doesn't matter what sex Lola is, I think she's alright."
Despite its subject matter, the BBC banned the track for a different reason. The original song recorded in stereo had the words Coca-Cola in the lyrics, but because of BBC Radio's policy against product placement, Ray Davies was forced to make a round-trip flight from New York to London and back—interrupting the band's American tour—to change those words to the generic "cherry cola" for the single release.

Natural Science |
The Cleveland Bay is a breed of horse that originated in England during the 17th century, named after its consistent bay colouring and the Cleveland district of Yorkshire. It is a strong, well-muscled horse breed, the oldest established breed in England, and the only non-draught horse developed in Great Britain. The ancestors of the breed were developed during the Middle Ages for use as pack horses. These were crossbred with Andalusian and Barb blood, and later with Arabians and Thoroughbreds, to create the Cleveland Bay of today. Over the years, the breed became lighter in frame as they were used more as carriage and riding horses. They have been patronised by members of the royal family throughout their history, and some are still used to pull carriages in royal processions. Today they are used for farm work, driving, and under-saddle work, but are particularly popular for fox hunting and show jumping.

![]() |

Locomotive U-127 is a 4-6-0 steam locomotive of class U, preserved at the Museum of the Moscow Railway next to Paveletsky Rail Terminal in Moscow. Built in 1910, the locomotive was badly damaged during the Russian Civil War but restored in May 1923. The following year it hauled head of state Vladimir Lenin's funeral train from Gerasimovskaya to Paveletsky station. For the next 13 years it continued in passenger service, until it was withdrawn in 1937, restored, and preserved.

![]() |

On Christmas morning, 2001, Francesca Eastwood and her mother, Frances Fisher, narrowly escaped a house fire that consumed their house. Francesca climbed out her bedroom window and leapt into the arms of her mother and a neighbor, and was treated at a hospital for smoke inhalation. Frances was also treated for burns on her hands. Francesca's father, Clint Eastwood, flew in to visit his daughter in the hospital and personally thanked her rescuers.

Natural Science |
Entoloma sinuatum is a poisonous mushroom found across Europe and North America. It is the largest mushroom of the Entoloma genus of pink-spored fungi. Appearing in late summer and autumn, it is found in or near deciduous woodlands on clay or chalky soils, sometimes in the form of fairy rings. The ivory to light grey-brown cap is up to 20 cm (8 in) across with a margin that is rolled inward. The sinuate gills are pale and often yellowish, becoming pink as the spores develop. The thick whitish stem has no ring. When young, it may be mistaken for the edible St George's mushroom (Calocybe gambosa) or the miller mushroom (Clitopilus prunulus).

Natural Science |
Terns are seabirds in the family Sternidae that are found worldwide, generally near the sea, rivers or wetlands. They are slender, lightly built birds with long forked tails, narrow wings, long bills and relatively short legs. Most species are pale grey above and white below, with a contrasting black cap, but the marsh terns, the Inca tern and some noddies have dark plumage for at least part of the year. The sexes are identical in appearance. They are birds of open habitats that typically breed in noisy colonies and lay their eggs on bare ground with little or no nest material. Many terns are long-distance migrants, and the Arctic tern, migrating each year between the Arctic and Antarctic, may see more daylight in a year than any other animal.

Natural Science |
1 person marked this as a favorite. |
Corona Borealis, the Northern Crown, and Corona Australis, the Southern Crown, are two small constellations among the 48 listed by the 2nd-century astronomer Ptolemy. Corona Borealis, which generally represented the crown given by the god Dionysus to the Cretan princess Ariadne, is in the Northern Celestial Hemisphere, while Corona Australis, associated with Sagittarius or Centaurus, is in the Southern. Corona Borealis boasts the highly variable stars R and T Coronae Borealis and the huge Corona Borealis Supercluster. Corona Australis, lying alongside the plane of the Milky Way, hosts Epsilon Coronae Australis, the brightest example of a W Ursae Majoris variable in the southern sky. It also contains one of the closest star-forming regions to our Solar System, about 430 light years away—a dusty dark nebula known as the Corona Australis Molecular Cloud, with stars at their earliest stages.

![]() |

The mean effective pressure is a quantity relating to the operation of a reciprocating engine and is a valuable measure of an engine's capacity to do work that is independent of engine displacement. When quoted as an indicated mean effective pressure or IMEP, it may be thought of as the average pressure acting on a piston during a different portions of its cycle.

![]() |

Heat Exchangers are equipment that facilitate heat transfer between fluids. The simplest type of heat exchanger is the Double Pipe Heat Exchanger, which consists of two concentric pipes. One of the fluids flows through the inner pipe and the other flows in the annular region between the inner and outer pipes.