Alhazen - Revision history

Asomasundaram24 at 18:40, 4 December 2015

2015-12-04T18:40:37Z

← Older revision		Revision as of 14:40, 4 December 2015
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	Not only was Alhazen heavily involved in optics, he was also heavily involved in the research of celestial objects/astronomy, number theory, geometry, philosophy, and theology. His work is very highly regarded that a crater on the moon is named after him. For number theory, Alhazen contributed his work on perfect numbers. He is a highly regarded physicist whose work can often be overlooked easily.		Not only was Alhazen heavily involved in optics, he was also heavily involved in the research of celestial objects/astronomy, number theory, geometry, philosophy, and theology. His work is very highly regarded that a crater on the moon is named after him. For number theory, Alhazen contributed his work on perfect numbers. He is a highly regarded physicist whose work can often be overlooked easily.


			==Connectedness==


			How is this topic connected to something that you are interested in?

			Alhazen sparked interest in me due to my heavy interest in the way light works. I've always been interested in refraction and reflections and also how light travels in a straight line.

Asomasundaram24 at 07:10, 4 December 2015

2015-12-04T07:10:11Z

← Older revision		Revision as of 03:10, 4 December 2015
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	==Book Of Optics==		==Book Of Optics==

	As mentioned earlier, Alhazen's most significant contribution was the Book of Optics which was created in a span of 10 years with 7 volumes. This book was also translated into Latin at the end of the 12th Centruy. This book influenced ~~great minds such as~~ Leonardo da ~~Vincy and Johann Kepler~~.		As mentioned earlier, Alhazen's most significant contribution was the Book of Optics which was created in a span of 10 years with 7 volumes. This book was also translated into Latin at the end of the 12th Centruy. This book influenced Johann Kepler and Leonardo da Vinci.


	===Theory Of Vision===		===Theory Of Vision===

	Alhazen performed experiments on colors and light, reflections, and optic illusions. He would view the refraction of light rays through transparent mediums such as air and water and would record the laws of refraction. He was noted to be the first person to perform experiments on the dispersion of light into colors. He was noted to be extremely close to discovering the theory of magnifying lenses. This theory was officially created three centuries later. Alhazen was the first scientist to consider vertical ~~and horizontal~~ components of reflected ~~and refracted~~ light rays.		Alhazen performed experiments on colors and light, reflections, and optic illusions. He would view the refraction of light rays through transparent mediums such as air and water and would record the laws of refraction. He was noted to be the first person to perform experiments on the dispersion of light into colors. He was noted to be extremely close to discovering the theory of magnifying lenses. This theory was officially created three centuries later. Alhazen was the first scientist to consider horizontal and vertical components of refracted and reflected light rays.

	Alhazen proposed an intromission theory which said that from all points of a colored body, light and color along every straight line can be produced from that single point. By stating this, Alhazen realized that his theorem had a loop hole: he couldn't explain how a coherent image formed from many independent sources of radiation. Essentially, every point on an object would send rays to every point on the eye. To fix this problem, he stated that only perpendicular rays from the point would be received by the eye. He stated that perpendicular rays ~~were stronger~~ than oblique rays. He also stated that there was only one perpendicular ray that enters the eye at an point and all the perpendicular rays converge on the center of the eye. Parallel rays ~~would be~~ refracted through the eye and perceived as if perpendicular. Johannes Kepler used Alhazen's theory to build off his own theory of retinal imaging which would address the problem of correspondence of points on an object and places in the eye. Alhazen was the first person to experiment and prove that light travels in straight lines and experimented with refraction and reflection.		Alhazen proposed an intromission theory which said that from all points of a colored body, light and color along every straight line can be produced from that single point. By stating this, Alhazen realized that his theorem had a loop hole: he couldn't explain how a coherent image formed from many independent sources of radiation. Essentially, every point on an object would send rays to every point on the eye. To fix this problem, he stated that only perpendicular rays from the point would be received by the eye. He stated that perpendicular rays are more powerful than oblique rays. He also stated that there was only one perpendicular ray that enters the eye at an point and all the perpendicular rays converge on the center of the eye. Parallel rays are refracted through the eye and perceived as if perpendicular. Johannes Kepler used Alhazen's theory to build off his own theory of retinal imaging which would address the problem of correspondence of points on an object and places in the eye. Alhazen was the first person to experiment and prove that light travels in straight lines and experimented with refraction and reflection.

	Alhazen also researched the process of sight and the structure of the eye along with image formations in the eye. He went into the detail of the structure of the human eye and went to consider how the anatomy would behave functionally as an optical system. Alhazen built off of [https://en.wikipedia.org/wiki/Ptolemy Ptolemy's] optic studies.		Alhazen also researched the process of sight and the structure of the eye along with image formations in the eye. He went into the detail of the structure of the human eye and went to consider how the anatomy would behave functionally as an optical system. Alhazen built off of [https://en.wikipedia.org/wiki/Ptolemy Ptolemy's] optic studies.
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	===Alhazen's Problem===		===Alhazen's Problem===

	Alhazen's problem encompasses drawing lines from wo points in the plane of a circle meeting at a point on the circumference and making equal angles with the normal at that point. Alhazen used this in the realm of optics to solve problems when given a light source and a spherical mirror, to be able to find the point on the mirror where the light reflected to the eye of an observer. Alhazen then proceeded to derive a formula for the sum of [https://en.wikipedia.org/wiki/Fourth_power fourth powers].		Alhazen's problem encompasses drawing lines from two distinct points on the plane of a circle meeting at a point on the circumference and making equal angles with the normal at that point. Alhazen used this in the realm of optics to solve problems when given a light source and a spherical mirror, to be able to find the point on the mirror where the light reflected to the eye of an observer. Alhazen then proceeded to derive a formula for the sum of [https://en.wikipedia.org/wiki/Fourth_power fourth powers].

	[[File:Abhishek_main_squeeze.jpg\|200px\|thumb\|right\|Alhazen's Problem]]		[[File:Abhishek_main_squeeze.jpg\|200px\|thumb\|right\|Alhazen's Problem]]

Asomasundaram24 at 07:03, 4 December 2015

2015-12-04T07:03:52Z

← Older revision		Revision as of 03:03, 4 December 2015
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	Claimed and Written by Ananth Somasundaram for PHYS2211		Claimed and Written by Ananth Somasundaram for PHYS2211

	'''Alhazen''' was an Arab physicist, mathematiician, and astronomer who resided in Basra, Cairo. Alhazen had significant contributions in the fields of optics, astronomy, mathematics, ~~meteorology,~~ visual perception ~~and the scientific method~~. He is considered to be the first theoretical physicist. Alhazen also was the earliest to discover that a hypothesis has the requirement to be experimented through trailed procedures or mathematical evidence. Alhazen is considered by many to be the father of modern optics.		'''Alhazen''' was an Arab physicist, mathematiician, and astronomer who resided in Basra, Cairo. Alhazen had significant contributions in the fields of optics, astronomy, mathematics, scientific method and visual perception. He is considered to be the first theoretical physicist. Alhazen also was the earliest to discover that a hypothesis has the requirement to be experimented through trailed procedures or mathematical evidence. Alhazen is considered by many to be the father of modern optics.

	[[File:03-ahazen.jpg\|100px\|thumb\|right\|Alhazen]]		[[File:03-ahazen.jpg\|100px\|thumb\|right\|Alhazen]]
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	Alhazen had significant contributions in the fields of optics, astronomy, mathematics, ~~meteorology,~~ visual perception ~~and the scientific method~~ as mentioned earlier. He made the correlation that the angle of incidence and refraction does not remain constant. He also researched the magnifying power of the lens. Alhazens work significantly impacted other scientists of his time and future. His book of optics debuted many scientific facts which would be used later in the scientific world. Although Alhazen wrote as many as 200 books, as many as 55 have survived.		Alhazen had significant contributions in the fields of optics, astronomy, mathematics, scientific method and visual perception as mentioned earlier. He made the correlation that the angle of incidence and refraction does not remain constant. He also researched the magnifying power of the lens. Alhazens work significantly impacted other scientists of his time and future. His book of optics debuted many scientific facts which would be used later in the scientific world. Although Alhazen wrote as many as 200 books, as many as 55 have survived.


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	===Theory Of Vision===		===Theory Of Vision===

	Alhazen performed ~~countless~~ experiments on light and ~~colors,~~ optic illusions~~, and reflections~~. He would view the refraction of light rays through transparent mediums such as air and water and would record the laws of refraction. He was noted to be the first person to perform experiments on the dispersion of light into colors. He was noted to be extremely close to discovering the theory of magnifying lenses. This theory was officially created three centuries later. Alhazen was the first scientist to consider vertical and horizontal components of reflected and refracted light rays.		Alhazen performed experiments on colors and light, reflections, and optic illusions. He would view the refraction of light rays through transparent mediums such as air and water and would record the laws of refraction. He was noted to be the first person to perform experiments on the dispersion of light into colors. He was noted to be extremely close to discovering the theory of magnifying lenses. This theory was officially created three centuries later. Alhazen was the first scientist to consider vertical and horizontal components of reflected and refracted light rays.

	Alhazen proposed an intromission theory which ~~stated~~ that "from ~~each point~~ of ~~every~~ colored body, ~~illuminated by any light, issue~~ light and color along every straight line ~~that~~ can be ~~drawn~~ from that point." By stating this, Alhazen realized that his theorem had a loop hole: he couldn't explain how a coherent image formed from many independent sources of radiation. Essentially, every point on an object would send rays to every point on the eye. To fix this problem, he stated that only perpendicular rays from the point would be received by the eye. He stated that perpendicular rays were stronger than oblique rays. He also stated that there was only one perpendicular ray that enters the eye at an point and all the perpendicular rays converge on the center of the eye. Parallel rays would be refracted through the eye and perceived as if perpendicular. Johannes Kepler used Alhazen's theory to build off his own theory of retinal imaging which would address the problem of correspondence of points on an object and places in the eye. Alhazen was the first person to experiment and prove that light travels in straight lines and experimented with refraction and reflection.		Alhazen proposed an intromission theory which said that from all points of a colored body, light and color along every straight line can be produced from that single point. By stating this, Alhazen realized that his theorem had a loop hole: he couldn't explain how a coherent image formed from many independent sources of radiation. Essentially, every point on an object would send rays to every point on the eye. To fix this problem, he stated that only perpendicular rays from the point would be received by the eye. He stated that perpendicular rays were stronger than oblique rays. He also stated that there was only one perpendicular ray that enters the eye at an point and all the perpendicular rays converge on the center of the eye. Parallel rays would be refracted through the eye and perceived as if perpendicular. Johannes Kepler used Alhazen's theory to build off his own theory of retinal imaging which would address the problem of correspondence of points on an object and places in the eye. Alhazen was the first person to experiment and prove that light travels in straight lines and experimented with refraction and reflection.

	Alhazen also researched the process of sight and the structure of the eye along with image formations in the eye. He went into the detail of the structure of the human eye and went to consider how the anatomy would behave functionally as an optical system. Alhazen built off of [https://en.wikipedia.org/wiki/Ptolemy Ptolemy's] optic studies.		Alhazen also researched the process of sight and the structure of the eye along with image formations in the eye. He went into the detail of the structure of the human eye and went to consider how the anatomy would behave functionally as an optical system. Alhazen built off of [https://en.wikipedia.org/wiki/Ptolemy Ptolemy's] optic studies.
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	===Scientific Method===		===Scientific Method===

	Alhazen believed in ~~a systemic and methodological~~ reliance on experimentation and controlled testing for his scientific observations. Alhazen especially preferred combining classical physics along with mathematics which helped him believe in his theories of color, vision and light.		Alhazen believed in reliance on experimentation and controlled testing for his scientific observations. Alhazen especially preferred combining classical physics along with mathematics which helped him believe in his theories of color, vision and light.

Asomasundaram24: /* See also */

2015-12-04T06:57:53Z

See also

← Older revision		Revision as of 02:57, 4 December 2015
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	[http://micro.magnet.fsu.edu/optics/timeline/people/alhazen.html Alhazen's work and contributions]		[http://micro.magnet.fsu.edu/optics/timeline/people/alhazen.html Alhazen's work and contributions]

	~~[https://en.wikipedia.org/wiki/Alhazen#Book_of_Optics Alhazen's Wikipedia Page]~~

	==References==		==References==

Asomasundaram24: /* See also */

2015-12-04T06:57:41Z

See also

← Older revision		Revision as of 02:57, 4 December 2015
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	[https://www.youtube.com/watch?v=ljgWdMkZbsg ~~YouTube Video~~ Book of Optics Video]		[https://www.youtube.com/watch?v=ljgWdMkZbsg Book of Optics Video]

	[http://micro.magnet.fsu.edu/optics/timeline/people/alhazen.html Alhazen's work and contributions]		[http://micro.magnet.fsu.edu/optics/timeline/people/alhazen.html Alhazen's work and contributions]

Asomasundaram24: /* See also */

2015-12-04T06:57:30Z

See also

← Older revision		Revision as of 02:57, 4 December 2015
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	== See also ==		== See also ==

	~~[https://en.wikipedia.org/wiki/Alhazen#Book_of_Optics Alhazen's Wikipedia Page]~~

	[https://www.youtube.com/watch?v=ljgWdMkZbsg YouTube Video] Book of Optics		[https://www.youtube.com/watch?v=ljgWdMkZbsg YouTube Video Book of Optics Video]

	[http://micro.magnet.fsu.edu/optics/timeline/people/alhazen.html Alhazen's work and contributions]		[http://micro.magnet.fsu.edu/optics/timeline/people/alhazen.html Alhazen's work and contributions]

			[https://en.wikipedia.org/wiki/Alhazen#Book_of_Optics Alhazen's Wikipedia Page]

	==References==		==References==

Asomasundaram24: /* References */

2015-12-04T06:57:02Z

References

← Older revision		Revision as of 02:57, 4 December 2015
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	==References==		==References==

			https://www.youtube.com/watch?v=ljgWdMkZbsg
			http://www-history.mcs.st-and.ac.uk/Biographies/Al-Haytham.html
			http://www.photonics.com/Article.aspx?AID=36717
	https://en.wikipedia.org/wiki/Alhazen#Book_of_Optics		https://en.wikipedia.org/wiki/Alhazen#Book_of_Optics
	~~https://www.youtube.com/watch?v=ljgWdMkZbsg~~
	http://micro.magnet.fsu.edu/optics/timeline/people/alhazen.html		http://micro.magnet.fsu.edu/optics/timeline/people/alhazen.html

Asomasundaram24: /* See also */

2015-12-04T06:56:21Z

See also

← Older revision		Revision as of 02:56, 4 December 2015
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	[https://en.wikipedia.org/wiki/Alhazen#Book_of_Optics Alhazen's Wikipedia Page]		[https://en.wikipedia.org/wiki/Alhazen#Book_of_Optics Alhazen's Wikipedia Page]

	[https://www.youtube.com/watch?v=ljgWdMkZbsg YouTube Video] Book of ~~Opticsc~~		[https://www.youtube.com/watch?v=ljgWdMkZbsg YouTube Video] Book of Optics

	[http://micro.magnet.fsu.edu/optics/timeline/people/alhazen.html Alhazen's work and contributions]		[http://micro.magnet.fsu.edu/optics/timeline/people/alhazen.html Alhazen's work and contributions]


	==References==		==References==

Asomasundaram24 at 06:56, 4 December 2015

2015-12-04T06:56:05Z

← Older revision		Revision as of 02:56, 4 December 2015
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	[[File:Abhishek_main_squeeze.jpg\|200px\|thumb\|right\|Alhazen's Problem]]		[[File:Abhishek_main_squeeze.jpg\|200px\|thumb\|right\|Alhazen's Problem]]

	~~===Refraction===~~

			===Scientific Method===

			Alhazen believed in a systemic and methodological reliance on experimentation and controlled testing for his scientific observations. Alhazen especially preferred combining classical physics along with mathematics which helped him believe in his theories of color, vision and light.


	==~~=Scientific Method=~~==		==Alhazen Wrap Up==

	Alhazen ~~believed~~ in a ~~systemic and methodological reliance~~ on ~~experimentation and controlled testing for his scientific observations~~. Alhazen ~~especially preferred combining classical physics along with mathematics which helped him believe in~~ his ~~theories of color, vision and light~~.		Not only was Alhazen heavily involved in optics, he was also heavily involved in the research of celestial objects/astronomy, number theory, geometry, philosophy, and theology. His work is very highly regarded that a crater on the moon is named after him. For number theory, Alhazen contributed his work on perfect numbers. He is a highly regarded physicist whose work can often be overlooked easily.



	== See also ==		== See also ==

	[https://en.wikipedia.org/wiki/~~Max_Planck Max Planck~~'s Wikipedia Page]		[https://en.wikipedia.org/wiki/Alhazen#Book_of_Optics Alhazen's Wikipedia Page]

	[https://www.youtube.com/watch?v=~~YEn-vX4duUc~~ YouTube Video] ~~regarding the beginning~~ of ~~quantum mechanics~~		[https://www.youtube.com/watch?v=ljgWdMkZbsg YouTube Video] Book of Opticsc

	[http://~~hyperphysics~~.~~phy-astr~~.~~gsu~~.edu/~~hbase~~/~~mod6~~.html ~~Black-Body Radiation~~]		[http://micro.magnet.fsu.edu/optics/timeline/people/alhazen.html Alhazen's work and contributions]

	~~===Further reading===~~

	~~[http://hyperphysics.phy-astr.gsu.edu/hbase/mod6.html HyperPhysics: Black-Body Radiation]~~

	==References==		==References==

	~~===External links===~~		https://en.wikipedia.org/wiki/Alhazen#Book_of_Optics
			https://www.youtube.com/watch?v=ljgWdMkZbsg
	~~http~~://~~www~~.~~famousscientists~~.org/~~max-planck~~/		http://micro.magnet.fsu.edu/optics/timeline/people/alhazen.html

	~~http~~://www.~~nobelprize~~.~~org~~/~~nobel_prizes/physics/laureates/1918/planck-bio.html~~

	http://~~www~~.~~britannica~~.~~com/biography~~/~~Max-Planck~~

	~~http:~~//~~www.physicsoftheuniverse.com~~/~~scientists_planck~~.html

Asomasundaram24: /* Alhazen's Problem */

2015-12-04T06:43:48Z

Alhazen's Problem

← Older revision		Revision as of 02:43, 4 December 2015
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	Alhazen's problem encompasses drawing lines from wo points in the plane of a circle meeting at a point on the circumference and making equal angles with the normal at that point. Alhazen used this in the realm of optics to solve problems when given a light source and a spherical mirror, to be able to find the point on the mirror where the light reflected to the eye of an observer. Alhazen then proceeded to derive a formula for the sum of [https://en.wikipedia.org/wiki/Fourth_power fourth powers].		Alhazen's problem encompasses drawing lines from wo points in the plane of a circle meeting at a point on the circumference and making equal angles with the normal at that point. Alhazen used this in the realm of optics to solve problems when given a light source and a spherical mirror, to be able to find the point on the mirror where the light reflected to the eye of an observer. Alhazen then proceeded to derive a formula for the sum of [https://en.wikipedia.org/wiki/Fourth_power fourth powers].

	[[File:Abhishek_main_squeeze.jpg\|~~100px~~\|thumb\|right\|Alhazen's Problem]]		[[File:Abhishek_main_squeeze.jpg\|200px\|thumb\|right\|Alhazen's Problem]]

	===Refraction===		===Refraction===