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- Kite flying (5612 bytes)
6: ... the string through a solution of ground glass powder and glue. The resulting strings are abrasive and...
8: ... Lower cost kites in quantity production may be made from printed polyester, which will have longer us...
11: ...cs such as silk for the sails. Modern kites are made with synthetic materials: nylon or more exotic fa...
13: ... aerodynamic forms, to modern sparless inflatable designs.:
19: ...ind. In recent years, multi-line kite flying has developed into a [[sport kite|sport]], with competit...
Page text matches
- Textile (4228 bytes)
1: ...rsed in a [[matrix]] of another material are considered [[composite material]]s rather than textiles.
3: ...oman]] weaver would have no problem recognizing modern plain weave, [[twill]] or [[satin]].
5: ... the last 100 years. The first synthetics were made in the 1920s and 1930s.
8: Textiles can be made from a variety of materials. The following is a p...
17: *[[Wool]]: divided into [[woollen]] and [[worsted]] - Ancient Egypt (16131 bytes)
1: ... around [[3300 BC]] until the conquest of [[Alexander the Great]] in [[332 BC]]. Although recent excav...
6: ... [[Mediterranean Sea]] and the [[Red Sea]]; it borders [[Libya]] to the west, [[Sudan]] to the south, ...
7: [[Image:Giza_ph2.jpg|thumb|250px|Image provided by [http://classroomclipart.com Classroom Clipar...
8: Ancient Egypt was divided into two kingdoms, known as the [[Upper and Lowe...
14: ...al breadbaskets of the ancient world. There is evidence of ancient Egyptian pharaohs of the [[Twelfth ... - Isis (20790 bytes)
1: ...age:Ancient_eygpt-1.jpg|thumb||170px|Clipart provided by <br> [http://classroomclipart.com Classroom C...
3: '''Isis''' is a goddess in the [[Egyptian mythology|Egyptian belief]]. ...
5: .... [[mortal]], and she may simply have represented deified, real, [[Queen regnant|queen]]s.
7: ...f many other goddesses. It eventually spread outside [[Egypt]] throughout the [[Middle East]] and [[Eu...
12: ...uption by English speakers. The Ancient Greeks tended to add a terminal 's' at the end of foreign name... - List of sports (7304 bytes)
1: ...is played, and there are many more sports to be added. This system has a disadvantage because some spo...
114: ...on motorised transportation, also not really considered "sports" by the majority of people.
134: * [[Modern pentathlon]]
142: * [[Aeromodelling]]
193: * [[Roller derby]] - Meteorology (19082 bytes)
12: ...d in [[1667]] by [[Robert Hooke]], while [[Horace de Saussure]] completed this list of the most import...
14: ... was also the first American to keep accurate and detailed records of weather conditions on a daily ba...
16: ...s was understood. Early in the 20th century this deflecting force was named after [[Gaspard-Gustave C...
18: ...lowed exchange of weather information with unprecedented speed.
20: ... [[front (meteorology)|front]]s, that is, sharply defined boundaries between air masses. - Anemometer (11426 bytes)
1: ...6 m) lengths. The wire (4 conductors running inside a shield) runs along the rightmost leg of the 3 l...
3: ...έτρον, a measure), is a device for measuring either the [[wind speed|velocit...
5: Anemometers may be divided into two classes, (1) those that measure the [[v...
7: ..., of the velocity of the wind to that of the cups depends very largely on the dimensions of the cups a...
9: The other forms of velocity anemometer may be described as belonging to the [[windmill]] type. In ... - Timeline of United States pre-history (1700-1759) (3760 bytes)
1: ...han Edwards.jpg|thumb|Rev. Jonathan Edwards, a leader of the Great Awakening, is still remembered for ...
16: *[[1733]] - [[Province of Georgia]] founded.
34: <table border="1" cellpadding="6">
51: ...ited_States/Presidents Photographs of the US Presidents]
56: ...ancentral.com/lessons/Social_Studies/US_History/index.htm US History Lesson Plans] - Lightning rod (7638 bytes)
1: ...sel) from [[lightning]] damage. Other names include '''lightning conductor''', '''lightning arrester'...
4: ... that tends to become so during storms. If the underground cable will resist [[corrosion]] well, it m...
6: ...he main power conductors. This conductor is grounded at various points along the link. Electrical su...
8: ..., as it is possible for lightning to strike the side of a building.
10: ... likely to be struck if they are nearer to the leader than this critical distance. It is standard pra... - Lightning (33113 bytes)
2: ...ning strokes are observed during a night-time thunderstorm.]]
6: ...e air, producing lightning's characteristic [[thunder]] sound.
10: ...but while waiting for its completion, he got the idea of using a flying object, such as a [[kite]] ins...
12: ...fallen during the storm had soaked the line and made it conductive.
14: ...ted the original high-object-with-some-spark-gap idea that they used, so he usually gets the credit. - Condor (7828 bytes)
18: ...n Condor''' (''Vultur gryphus'') inhabits the [[Andes]] mountains. The '''California Condor''' (''Gymn...
22: [[Image:Colca_Canyon_Condor.jpg|thumb|250px|An Andean condor soars over southern [[Peru]]'s [[Colca C...
24: ...f dehydration and ultraviolet light at high altitudes, and are meticulously kept clean by the bird. Th...
26: ...reatly elongated, and the hinder one but slightly developed, while the talons of all the toes are comp...
30: ...gg is laid to take its place. Researchers and breeders take advantage of this behavior to double the r... - Surfing (15219 bytes)
2: ...ge:Surfing in Hawaii.jpg|thumb|350px|Surfing outside [[Kaneohe Bay]], Hawai‘i.]]
5: ... droves to enjoy the maneuverability and stunts made possible by the new boards. The sport has spread ...
7: ...ads (to keep a surfers feet from slipping off the deck of the board), interchangeable "[[skeg]]s" (als...
9: ...orming a "tube" (or "barrel"), with the rider inside the cylindrical portion of the wave. However, su...
11: ...ing has to do with paddling out and waiting 'outside'. However, one does not see photographs of pros ... - Electricity (13894 bytes)
1: ...s law]]. Some electrical effects are discussed under [[electrical phenomenon]] and [[electromagnetism...
8: ...ian]] walls, such as the [[Dendera light]]. Other devices discovered in Egyptian and other archaeologi...
10: ...tist)|William Watson]], experimenting with the Leyden jar, discovered in [[1747]] that a discharge of ...
11: ...:Electricity clipart.jpg|thumb|250px|Clipart provided by [http://classroomclipart.com Classroom Clip A...
12: ... frequently) or [[Ebenezer Kinnersley]] of [[Philadelphia]] (less frequently) who created the conventi... - Ionosphere (19365 bytes)
8: ...alance between these two processes determines the degree of ionization present at any given time.
10: ...e also mechanisms that disturb the ionosphere and decrease the ionization. There are disturbances suc...
14: ...imum solar activity. With an active sun electron density values are a factor of 10 higher.]]
19: ...] of 121.5 [[nanometre]](nm) ionizing [[nitric oxide]] (NO). In addition, when the sun is active with...
22: ...ow far it can reflect radio waves. On the night side of the Earth, the solar wind drags the ionosphere... - Louis Bleriot (3099 bytes)
5: ...machine called an [[ornithopter]], which was intended to fly by flapping its wings. Like other ornitho...
8: ...ériot began to build and fly aircraft of his own design.
11: As lightweight engines became available, he developed planes with various configurations ranging...
14: ...d worrying the British, who felt that they had suddenly become vulnerable to air attack.
16: [[Image:Louis_Bleriot_accident.jpg|thumb|270px|Wreckage of Blériot's plane, R... - Aircraft (13315 bytes)
15: ... use a spinning rotor (a ''rotary wing'') to provide both lift and thrust. The abbreviation [[VTOL]] i...
18: ...n particular, these aircraft use a relatively low density gas such as [[helium]], [[hydrogen]] or heat...
24: Below, we describe classifications by design, propulsion and usage.
29: ====By design====
33: A first division by design among aircraft is between lighter-than-air, '... - Benjamin Franklin (22881 bytes)
1: ...pg|thumb|right|300px|Benjamin Franklin Image provided by [http://classroomclipart.com Classroom Clip A...
2: ...klin was a member of the [[Freemasons]], corresponded with members of the [[Lunar Society]] and was al...
4: Franklin's [[invention]]s include the [[Franklin stove]], the medical [[catheter]],...
9: ...[[Ecton]], [[Northamptonshire]], [[England]] on [[December 23]], [[1657]] the son of Thomas Franklin, ...
11: ...ing half-siblings of Benjamin Franklin. They included: Elizabeth ([[March 2]] [[1678]]), Samuel ([[May... - List of hobbies (5016 bytes)
17: * [[Embroidery]]
41: * Classic [[videogame]]s
54: * [[Scale model]]s
62: * [[3D computer graphics]] design
63: * [[Animation]] design - Kite flying (5612 bytes)
6: ... the string through a solution of ground glass powder and glue. The resulting strings are abrasive and...
8: ... Lower cost kites in quantity production may be made from printed polyester, which will have longer us...
11: ...cs such as silk for the sails. Modern kites are made with synthetic materials: nylon or more exotic fa...
13: ... aerodynamic forms, to modern sparless inflatable designs.:
19: ...ind. In recent years, multi-line kite flying has developed into a [[sport kite|sport]], with competit... - Vulture (2343 bytes)
3: ...ing]] [[bird]]s, feeding mostly from carcasses of dead [[animal]]s. Vultures are found in almost every...
5: ... many vultures is a bald [[head (anatomy)|head]], devoid of [[feather]]s. This is likely because a fea...
7: ...g to the family [[Accipitridae]], which also includes [[eagle]]s, [[kite (bird)|Kite]]s, [[buzzard]]s ...
16: ... the vulture to be an excellent mother, and its wide wingspan was seen as all-encompassing and providi...
19: ...ed "vultures". Financial investors who look for indebted companies or countries to buy [[security|secu... - Stegosaurus (3704 bytes)
24: ...and the four long spikes on the tail. Its name is derived from the plates, and means "roofed" or "cove...
29: ...t ton]]s) in mass, though most species never exceeded 7 meters (23 feet), and about 2,000 kg (2 short ...
31: ...own the back. The plates are highly modified osteoderms, or bony-cored scales, similar to those seen i...
33: ...blished in [[2005]] points to a simpler purpose: identification. Researchers also believe this may be...
40: ...red dinosaurs, or [[Thyreophora]]. Relatives include ''[[Ankylosaurus]]'' and ''[[Nodosaurus]]''.
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