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- Sundial (16148 bytes)
7: ...en designs, such as the 'ordinary' or standard garden sundial, cast a shadow on a flat surface marked ...
9: However, sundials can be designed for any surface where a fixed object casts ...
11: Most sundial designs indicate [[solar time|apparent solar time]].
12: Minor design variations can measure standard and daylight ...
14: Sundials are known from ancient Egypt, and were developed further by other cultures, including the [... - Archaeopteryx (8771 bytes)
2: ...:Archaeopteryx-model.jpg|250px|]] | caption = A model of ''Archaeopteryx lithographica''<br/> on displ...
17: ...[The Origin of Species]]'' set off a firestorm of debate about [[evolution]] and the role of [[transit...
27: ...|200px|left|Illustration of a Archaeopteryx, provided by [http://classroomclipart.com Classroom Clipar...
28: ...tures) lineage of which eventually gave rise to modern birds.
30: ...arently earlier bird, ''[[Protoavis]]'', are considered to be unproven by most [[paleontologist]]s. - Skyscraper (12706 bytes)
3: ...s, but it tends to be applied specifically to residential buildings.
5: ...hts of stairs, and water pressure could only provide running water to about 50 feet (15 m).
7: ...her development essential to practical skyscraper development was the invention of the [[elevator]].
9: ...[[1931]] for the Field's building. Another contender for the title is the 1892 ten-story [[Wainwright...
11: ... supported by these skeletal frames. Special consideration must also be given for wind loads. - Rhodes (9349 bytes)
1: :''The Greek island of Rhodes..''
3: ... of the medieval city of Rhodes'' Photograph provided by [http://classroomclipart.com Classroom Clip ...
5: ...se and of the Province of Rhodes, which also includes the nearby islands of [[Symi]], [[Tilos]], [[Hal...
7: ...its [[Colossus of Rhodes]], one of the [[Seven Wonders of the World]]. The medieval city is a [[World ...
10: .../rhod.htm Diagoras International Airport], IATA code: RHO) is located 14 km to the southwest of the ci... - American Black Bear (15019 bytes)
2: ...age = [[Image:Bear9738.jpg|thumb|250px|Image provided by [http://classroomclipart.com Classroom Clip A...
16: ... a low of 200,000 before rebounding in recent decades, partly due to conservation measures. By current...
20: ...ally sport a slight white chest blaze on either side of the river.
23: ...werful front [[paw]] is enough to kill an adult [[deer]].
27: ...cks, in banks, caves, or culverts, and in shallow depressions. - Polar bear (6417 bytes)
15: ...'northern bear''', is a large [[mammal]] of the order [[Carnivora]] (meat eater), family ''Ursidae'' (...
20: ... barely visible. Only the pads of their feet emit detectable heat.
22: ...y include [[beluga whale]]s, [[walrus]]es and [[rodent]]s. As a pure carnivore predating upon [[fish]...
24: ...ed 15–25 percent between 1995 and 2005. The decrease in several regions was caused by hunting, n...
26: ...itions. The bears were washed in a [[peroxide blonde]] solution to restore their expected color. A sim... - Morse code (33777 bytes)
1: ...b|right|Portrait of Samuel F. B. Morse.Image provided by [http://classroomclipart.com Classroom Clip A...
2: ...orse code is the only digital [[modulation]] mode designed to be easily read by humans without a compu...
4: ...rly form of a digital code. International Morse code is composed of six elements:
11: ...by more regular formats, including the [[Baudot code]] and [[ASCII]].
13: ...s, became known as Railroad or [[American Morse code]], and is now very rarely used. - History of California (38344 bytes)
5: ...l fields, and finally with its high-technology leadership.
7: ...325px|A field of [[California Poppy|California golden poppies]] ''circa'' [[1910]].]]
13: ... while those in the northern [[Cascade Range]] traded [[obsidian]], used for arrowheads, axe heads, an...
19: ...cted by stories of [[Zihuatanejo|Ciguatan]], a wonderful country far to the northwest, populated with ...
23: ...ula of [[Baja California]]), and laid out and founded the city that was to become LaPaz later that spr... - Earthquake (13859 bytes)
1: ...s]] into which the Earth's [[lithosphere]] is divided. Events that occur at plate boundaries are call...
5: ...he earthquakes shaking is the dominant and most widespread cause of damage.
11: ...er one, large faults are capable of higher magnitude earthquakes than smaller faults are.
13: ...ake, or as a result of submarine landslips or "slides" indirectly triggered by it.
15: ...ed simultaneously. They arrive in the following order: first the body waves [[P-wave]]s (primary or pr... - Economics (30960 bytes)
1: ...lyzing the [[production]], [[distribution]], [[trade]] and [[consumption]] of [[goods]] and [[services...
3: ...ny problem that involves choice under scarcity or determining economic [[value#Economics|value]].
5: ... models]] in order to predict the consequences of decisions or events, it also analyses the behaviour ...
7: ... also studied topics ranging from marriage to the death penalty and optimal political institutions.
12: Economics is usually divided into two main branches: - Religion (72319 bytes)
1: ...onship with the universe. In the course of the [[development of religion]], it has taken a huge numbe...
2: ...is used to designate what should be more properly described as a "religious organization" – that...
5: ...ht|Fishers of men; Oil on panel by [[Adriaen van de Venne]] ([[1614]])]]
10: ...e. The second interpretation, favoured by more modern scholars such as [[Tom Harpur]], is ''re + ligi...
12: ===Defining "religion"=== - Meditation (26064 bytes)
3: ...me calm and focused. Several major religions include ritual meditation; however, meditation itself nee...
5: ...se is the receipt of spiritual insights and new understanding.
10: ...t-clipart-9029.jpg|thumb|right|250px|Clipart provided by [http://classroomclipart.com Classroom Clip A...
12: ...and some people use repetitive activities such as deep breathing, humming or chanting to help induce a...
16: Besides the physical factors related to meditation perha... - 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. - Flood (7770 bytes)
1: ...er", the word is applied to the inflow of the [[tide]], as opposed to the outflow or "ebb".
2: ... history is treated badly as [[Deluge (mythology)|Deluge in mythology]].
5: ...]fall does occur, it can sometimes result in a sudden flood of water filling dry streambeds known as a...
7: ...e rich farmlands and can result in their eventual depletion. The annual cycle of flood and farming was...
10: ...ntries, such as [[Bangladesh]], due to their extended periods of [[rainfall]]. - Pressure (9004 bytes)
12: Often ''F'' is taken to be the magnitude of the mean vector force normal to the surface of...
14: The [[gradient]] of pressure is [[force density]].
23: ...t. Pressure acts in all directions at a point inside a gas. At the surface of a gas, the pressure forc...
30: *''[[rho|ρ]]'' (rho) is the [[density]] of the fluid
38: ...or [[Cobra probe]], connected to a [[manometer]]. Depending on where the inlet holes are located on th... - Independence Day (United States) (6238 bytes)
1: <table border="1" cellpadding="2" cellspacing="0" align="right...
2: ...lor="chocolate"><center><font size="+1">'''Independence Day'''</font></center></td></tr>
4: <td bgcolor="#ffde80">[[United States|Americans]]</td></tr>
6: <td bgcolor="#ffde80">Fourth of July</tr></td>
8: <td bgcolor="#ffde80">[[July 4]]</td></tr> - Garlic (12167 bytes)
3: ...ated by eating fresh [[parsley]] and this is included in many garlic recipes. Because of its strong o...
8: Because of its wide cultivation, the origins of garlic are uncertain;...
10: ...as long, narrow, flat, obscurely keeled leaves, a deciduous spathe, and a globose umbel of whitish flo...
12: ...h.com/garlic.htm#grow Selfsufficientish.com] provides the following growing instructions:
13: ...in drills of 5 cm (2 in) and 15 cm (6 in) apart. Ideal soil pH is in the 6.2 to 6.8 range. - Kangaroo Facts (16137 bytes)
18: ... The term ''kangaroo'' is sometimes used in a broader sense to refer to all members of the macropod fa...
21: ... mouth of the Endeavour River in the harbour of modern [[Cooktown]] for almost 7 weeks repairing their...
22: ....jpg|thumb|250px|left|Picture of a Kangaroo, provided by [http://classroomclipart.com Classroom Clipar...
23: ...nd wallabies. The belief that it means "I don't understand" is a popular [[myth]] that is also applied...
29: ...iganteus'') is less well-known than the red (outside of Australia), but the most often seen, as its ra... - Pope Leo I (11553 bytes)
5: ... request. But nothing shows more plainly the confidence felt in him than his being chosen by the emper...
13: ...], and proceeded against them by holding a public debate with their representatives, burning their boo...
15: ...against the sect, examining its false teaching in detail, and calling for a Spanish general council to...
17: ...]], the disciple of [[Saint Peter|Peter]] and founder of the Alexandrian Church, could have had no oth...
19: ...unity to assert his authority there, which he did decisively in regard to a number of questions of dis... - Pope Gelasius I (4083 bytes)
2: ...te orthodox patriarch [[Euphemius]] (''q.v.'' for details of the '''[[Acacian schism]]''').
4: ...hristo naturis'' ('On the dual nature of Christ') delineated the western view.
8: ...s of the controversy and incidentally offers some details of this festival combining [[fertility]] and...
10: ...d, the old normal method of receiving communion under the form of bread alone returned into vogue.
12: ... was the definition of what books were to be considered canonical. The fixing of the [[The Canon of Sc...
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