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- Lens (vision) (1723 bytes)
2: ...ought to a focus by changing the curvature of the lens.''</small></td></tr></table>
3: The '''lens''' or '''crystalline lens''' is a component of the [[eye]]. In concert with...
5: ...liary muscle]]s. By changing the curvature of the lens, one can focus the eye on objects at different di...
7: ... adult human (though these figures can vary). The lens is included into the [[capsular bag]], maintained...
10: ...ct]] is when the normally transparent crystalline lens develops opacities and leads to blurry vision.
Page text matches
- Eye (21834 bytes)
9: ...itreous humour]], with a focusing [[lens (vision)|lens]] and often an [[iris of the eye|iris]] which reg...
11: ...es as is often believed). Each sensor has its own lens and photosensitive cell(s). Some eyes have up to ...
13: ...rilobites had only one, and some had thousands of lenses in one eye.
15: ...more. This enables snails to keep out of direct sunlight.
22: ... of the light. The [[cornea]] and [[lens (vision)|lens]] help to focus ([[converge]]) light rays onto th... - Aniridia (959 bytes)
1: ... done with tinted spectacles, or with a [[contact lens]] which has an artificial iris painted onto it.
3: ...[glaucoma]], [[corneal disease]], [[cataract]], [[lens subluxation]] and [[optic nerve disease]]. Childr... - Glass (26176 bytes)
22: ...sub>/{{Germanium}}O<sub>2</sub> glass, which has only slightly different optical properties (the germa...
32: ...tive index, and is used in producing high-quality lenses. Large amounts of [[iron]] are used in glass th...
52: ...loped, which led to its becoming a much more commonly used material. The invention of the glass pressi...
59: ...elds, [[flask]]s, [[test tube]]s, [[Lens (optics)|lenses]] and other laboratory equipment are often made...
85: ...ere rarely optically parallel giving rise to commonly seen distortions. - Timeline of invention (28171 bytes)
107: * [[1451]]: [[Concave lens]] for [[eyeglasses]]: [[Nicholas of Cusa]]
110: * [[1510]]: [[Pocket watch]]: [[Peter Henlein]]
311: ...ormer]]: [[William Stanley (physicist)|William Stanley]]
321: ... [[1888]]: [[Pneumatic tube tire]]: [[John Boyd Dunlop]]
394: * [[1914]]: [[Tank]], military: [[Ernest Dunlop Swinton]] - Aberration (558 bytes)
7: ...ystems]], see also the article on [[Lens (optics)|lenses]]. - Spider (29039 bytes)
85: ...ix), no [[antennae]], and their eyes are single [[lens]]es rather than [[compound eye]]s. Additionally s...
90: ...Primitive [[mygalomorph]] spiders generally have only a pair of [[book lungs]] filled with haemolymph,...
98: ... is better developed than the rest, or there are only six pair, or no eyes at all. Several families of...
116: ...turation and enters his adult life with one palp only. The palpi constitute 20% of its body mass, and ...
123: ...ale spider towards the male is largely a myth... only in some exceptional cases does the male fall vic... - Astronomy (13970 bytes)
10: ...ronomy". Theoretical astrophysics is concerned mainly with figuring out the observational implications...
27: ...tragalactic astronomy]]: the study of objects (mainly galaxies) outside our galaxy.
49: In astronomy, [[information]] is mainly received from the detection and analysis of [[el...
62: ...yellow galaxies near the photograph's center. The lens is produced by the cluster's gravitational field ...
71: In early times, astronomy involved only the observation and predictions of the motions o... - Sun (20830 bytes)
135: [[Image:SunLayers.png|thumb|left|220px|Structure of the Sun]]
147: The core is the only part of the Sun where an appreciable amount of h...
162: ...space and its energy escapes the Sun entirely. Sunlight has a [[black-body]] spectrum that is charact...
168: It is about 4,000 [[kelvin]]s. It is the only part of the Sun cool enough to support simple mo...
181: ...produced by the nuclear reactions in the Sun was only one third of the number predicted by theory, a r... - Timeline of microscope technology (1673 bytes)
6: ...r compound microscope with a convex and a concave lens.
8: ...[[London]], a compound microscope with two convex lenses. - List of inventors (14020 bytes)
83: ...Adolf Eugen Fick]], (1829-1901) — [[contact lens]]
113: *[[Robert Heinlein]], (1907-1988), waterbed
230: ...]], (1913-1989) — invented modern [[contact lenses]] - Human (48024 bytes)
43: ...ace''. Until the [[20th century]], ''human'' was only used adjectivally ("pertaining to mankind"). Nom...
54: ...piens sapiens''. They are usually considered the only surviving species in the genus ''[[Homo (genus)|...
116: ...[[bonobo]], or pygmy chimpanzee. [http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed...
124: ...in the animal kingdom. Certainly, humans are the only technologically advanced animal. Along with neur...
146: ...an survive for over two months without food, but only up to around 14 days without water. (See also [[... - Cell (biology) (28190 bytes)
27: ...' cells are structurally simple. They are found only in single-celled and [[Colony (biology)|colonial...
49: ...les contained in it. The term ''cytosol'' refers only to the fluid itself.
63: ...ne or more vital functions. Organelles are found only in eukaryotes and are, with a few exceptions, su...
69: ...ve their own genome. Chloroplasts and are found only in photosynthetic eukaryotes like plants and [[a...
193: *[[Flagellum]] (only in gametes) - Robert Hooke (5017 bytes)
14: ...iple lenses (usually three - an eyepiece, a field lens and an objective). While he did give much advice ... - Isaac Newton (23339 bytes)
4: ...[orbit]]s (such as those of [[comet]]s) were not only [[ellipse|elliptic]], but could also be [[hyperb...
36: ...ctive properties became available, did achromatic lenses for refractors become feasible.) In [[1671]] th...
73: ...om [[1689]] to [[1690]] and in [[1701]], but his only recorded comments were to complain about a cold ...
95: ...rsity. His writings on this topic were published only posthumously.
107: .... Newton was notable in that scene for being the only scientist without a sense of humor. He also took... - Microscope (8708 bytes)
3: ...age of an object placed in the focal plane of the lens(es).
8: ...ill found in the [[magnifying glass]], the [[hand-lens]], and the [[loupe]].
11: ...ve and eyepiece assemblies. These multi-component lenses are designed to reduce [[Aberration in optical ...
19: #ocular lens or eye-piece
21: #[[objective lens]]es - Sundial (16148 bytes)
7: The most commonly seen designs, such as the 'ordinary' or standard...
18: ...style or [[gnomon]] of a standard sundial is the only practical way to install a mass-produced garden ...
49: ...materials are a white marble face, with markings inlaid in black marble. Traditional styles are thick...
74: ...etal bars. Fancy sundials used to have faces of inlaid stone.
76: A problem is that vertical sundials only keep time for the part of the year in which the ... - Age of Enlightenment (36312 bytes)
3: The '''Age of Enlightenment''' refers to the [[18th century]] in [[...
4: ...fers to a historical intellectual movement, "The Enlightenment." This movement advocated [[rationalism...
6: ...itical]] theories of the age. However, prominent Enlightenment philosophers such as [[Voltaire]] and [...
10: ...riod). Furthermore, [[Romanticism]] followed the Enlightenment.
11: == History of Enlightenment philosophy == - Albert Einstein (43065 bytes)
20: ... in Munich lodgings to finish school, completing only one term before leaving school in spring 1895, w...
24: ...ched to the same section as Einstein, and as the only woman that year, to study for the same diploma. ...
33: ...for Einstein Studies at Boston University, Joffe only ascribed authorship to Einstein, as he believed ...
37: ...one. This is [[irony#irony of fate|ironic]], not only because Einstein is far better-known for relativ...
39: ...s to the "''Annalen der Physik''". They are commonly referred to as the "''[[Annus Mirabilis Papers]]... - Alexander Graham Bell (18688 bytes)
23: ...deavoured to produce a telephone which would not only send musical notes, but articulate speech. With ...
25: ... range of Bell's inventive genius is represented only in part by the eighteen patents granted in his n...
39: ...otice of a patent application) of a similar kind only 2 hours after Bell had filed for his patent.
55: ...[decibel]] (dB), equal to 0.1 B, became more commonly used.
62: ...s modulated by a vibrating mirror, focused by a [[lens]] and directed at the receiver, which was simply ... - Photography (18493 bytes)
1: [[Image:Camera.jpg|right|Lens and mounting of a large format camera|thumb]]
2: ...nical]], [[chemical]] or [[digital]] devices commonly known as [[camera]]s.
5: Most commonly a [[camera]] or [[camera obscura]] is the image ...
12: *[[Aperture]] of the lens
14: ...acro]], [[Wide-angle lens|wide angle]], or [[Zoom lens|zoom]])
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