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- Steel (28384 bytes)
3: ...iron, but is also more [[brittle]]. One classical definition is that steels are iron-carbon alloys wit...
5: ... [[plasticity (physics)|plastically]] formed (pounded, rolled, etc.).
8: ...l><sub>2</sub></small>— [[Pyrite]]. Iron oxide is a soft [[sandstone]]-like material with limite...
11: ...similarly soft and metallic but can dissolve considerably more carbon (as much as 2.04 wt% carbon at 1...
13: ...ry similar unit cell structure to austenite, and identical chemical composition. As such, it requires... - Hydrangea (4213 bytes)
15: ...h the widely cultivated temperate species are all deciduous.
19: ...[purple]]; in these species the exact color often depending upon the acidity or alkalinity of the soil...
22: ...in the genus ''Hydrangea''. Selected species include:
37: *''[[Hydrangea scandens]]''. Southern Japan south to the [[Philippines]...
42: ...phylla|H. macrophylla]]'' being by far the most widely grown with over 600 named [[cultivar]]s. Some a... - Actinium (7046 bytes)
2: {| border="1" cellpadding="2" cellspacing="0" align="right...
5: {| align="center" border="0"
20: | [[Chemical series]] || [[Actinide]]s
25: | [[Density]], [[Mohs hardness scale|Hardness]]
39: | [[van der Waals radius]] || n/a pm - Artery (6875 bytes)
3: ...known as the ''media''. This "middle layer" is made up of [[smooth muscle]] cells and elastic tissue....
9: ...ow, mean [[systemic]] pressures typically being under 100 mmHg, about 1.8 lbf/in², above surround...
11: ...rgic, other locally produced peptides, nitrous oxide, etc. (See epinephrine, norepinephrine, alpha and...
13: ...ssure, i.e. Systolic vs. Diastolic difference, is determined primarily by the amount of blood ejected ...
15: ...aturation increases and [[carbon dioxide]] levels decrease. [[Hemoglobin]] molecules within [[red blo... - Heart (10132 bytes)
1: ...Image:Heart_crca.jpg|thumb|right|230px|Image provided by [http://classroomclipart.com Classroom Clip A...
3: ... language|Greek]] ''kardia'' (καρδια) for "heart".
7: ... a sac known as the [[pericardium]] and is surrounded by the [[lung]]s. In adults, it weighs about 300...
9: A thick muscular wall, the [[septum]], divides the right atrium and ventricle from the left atr...
15: ...takes places and the blood releases [[carbon dioxide]] into the lung cavity and picks up [[oxygen]]. T... - Ceramics (15941 bytes)
7: ...rthenware and porcelain to decorative tiles and modern sculptures, reflecting both functional and aest...
10: ...cement, leading to more uniform and sophisticated designs.
17: *Hand-Building: This includes pinching, coiling, and slab building. It's one o...
19: ...is popular for making bowls, vases, and other rounded forms.
21: ... making it easier to produce multiple copies of a design. - Glass (26176 bytes)
1: The materials definition of a '''glass''' is a uniform [[amorphous...
3: ...ed the word ''glaes'' to describe [[amber]], recorded by [[Roman Empire|Roman]] historians as ''glaesu...
5: ...glasses in common use as a building, container or decorative material.
9: ...d with very smooth and impervious surfaces. These desirable properties lead to a great many uses of gl...
13: ...ommon glass''' is mostly amorphous [[silicon dioxide]] ([[Silicon|Si]][[Oxygen|O]]<sub>2</sub>), which... - Illuminated manuscript (5973 bytes)
1: ...e [[Aberdeen Bestiary]] (folio 4v), would be considered illuminated.]]
3: ...indication specimens of medieval [[painting]]. Indeed, for many areas and time periods, they are the ...
5: For a list of pre-modern illuminated manuscripts please see [[List of La...
7: For a look at a modern undertaking in progress right now please see http://ww...
13: ... illuminated "[[book of hours|books of hours]]" made, which set down prayers appropriate for various t... - Blast furnace (4721 bytes)
4: ...clear whether the blast furnace was independently developed there, or whether the technology was trans...
6: ...ource]], and the use of a [[coal]]-derived fuel made blast furnace-based iron smelting significantly l...
15: ...chemically to produce pure iron and [[carbon dioxide]], which leaks out of the furnace at the top.
17: ...into [[calcium oxide]] and additional carbon dioxide:
21: The calcium oxide reacts with various acidic impurities in the iron... - Grover Cleveland (20963 bytes)
1: <table border="0" align="right" style="margin-left:1em"><tr><t...
2: <table border="1" cellpadding="2" cellspacing="0">
5: <tr><td>'''Order:'''</td><td>
6: 22nd President<br>
7: 24th President</td></tr> - Mars (27704 bytes)
2: [[Image:Mars NPArea-PIA00161 modest.jpg|thumb|right|North Polar region with icecap....
4: ...]]s ([[Phobos (moon)|Phobos]] and [[Deimos (moon)|Deimos]]) which are both small and oddly-shaped, pos...
8: ...e. Its red, fiery appearance is caused by Iron Oxide (rust) on its surface. Mars has only a quarter th...
11: ...he atmosphere on Mars is 95 percent [[carbon dioxide]], 3 percent [[nitrogen]], 1.6 percent [[argon]],...
13: ... volcanic methane is accompanied by [[sulfur dioxide]]. - Saturn (planet) (23300 bytes)
1: ...cing=0 align=right style="margin:0 0 .5em 1em; border-collapse:collapse;" width=280px;
4: ...]]<br> <small><font color="white">Click image for description</font></small>
39: | 2.484 46°<br>(5.51? to Sun's equator)
41: ...e ascending node|Longitude of the<br> ascending node]]
42: | 113.715 04° - List of minerals (11610 bytes)
40: #[[Auricupride]]
57: ...]] (metamorphic rock - zoisite, ruby, and hornblende)
64: #[[Baddeleyite]]
150: #[[Diopside]]
156: #[[Delessite]] (magnesian chamosite) - Capacitor (29664 bytes)
2: ...ade of metal) stacked or rolled to form a compact device, but '''every''' multi-[[conductor]] [[geomet...
7: ... but opposite charge, the ''total'' charge in the device is always zero.
22: ...cumulates on the plates of a capacitor, a voltage develops across the capacitor due to the electric fi...
30: For an ideal capacitor, the capacitor [[current]] is proport...
45: ...rs are usually specified such as 5 or 10%, or broader ranges for some types. Adjustable versions have ... - Earth's atmosphere (10093 bytes)
3: ...tries.jpg|thumb|250px|right|Geograhy Clipart provided by [http://classroomclipart.com Classroom Clip A...
5: ... designated as [[Astronaut|astronauts]]. An altitude of 120 km (75 mi or 400,000 ft) marks the boundar...
8: ...ical relationship]] between temperature and altitude varies between the different atmospheric layers:
10: ...ding on latitude and weather factors, temperature decreasing with height.
12: ...50 km to the range of 80 km to 85 km, temperature decreasing with height. - 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... - Chemical element (8169 bytes)
1: ... '''element''', is a substance that cannot be divided or changed into different substances by ordinary...
2: ...thumb|200px|Chemistry Flask Clipart .Clipart provided by [http://classroomclipart.com Classroom Clip A...
3: ...are [[radioactive]] and in undergoing radioactive decay transmute into a different element.
5: ... the [[Big Bang]]. All the heavier elements are made naturally and artificially through various method...
7: ...present at the formation of Earth have long since decayed. - Travertine (990 bytes)
1: ...x|thumb|Cascading Travertine in Turkey.Image provided by [http://classroomclipart.com Classroom Clip A...
2: ... travertine in its construction, including some videos of travertine being quarried and cut for use. - Limestone (3809 bytes)
3: ...lcite dissolution). Secondary calcite may also be deposited by [[Supersaturation|supersaturated]] [[Me...
5: ...kkale25.jpg|thumb|300px|left|Limestone.Image provided by [http://classroomclipart.com Classroom Clip A...
7: ...lar rocky outcrops and [[island]]s. Examples include the [[Verdon Gorge]] in [[France]]; [[Malham Cove...
9: ...pring|hot]] or cold springs. Calcium carbonate is deposited where evaporation of the water leaves a so...
19: ...re normally limestone. Limestone is used as a facade on some [[skyscraper]]s, but only in thin plates ... - Climate change (15859 bytes)
5: ... recent climate change]]. For global warming episodes in the geological record, see [[Permian-Triassic...
8: ...led [[climate forcing|climate forcings]], are divided into natural factors, such as variations in [[so...
12: ...nts associated with the [[Canadian Shield|Laurentide]] ice sheet and thus count as "internal variabili...
18: ...te system varies between chaotic and non-chaotic, depending on the state of the external forcing.
23: ...riod"]). See also the discussion at [[carbon dioxide]].
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