Ernest Rutherford - Revision history

Pestrada8 at 06:35, 2 December 2015

2015-12-02T06:35:19Z

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	https://www.sciencenews.org/article/incredible-shrinking-proton		https://www.sciencenews.org/article/incredible-shrinking-proton

	==External links==		===External links===

	http://ocw.mit.edu/courses/physics/8-13-14-experimental-physics-i-ii-junior-lab-fall-2007-spring-2008/		http://ocw.mit.edu/courses/physics/8-13-14-experimental-physics-i-ii-junior-lab-fall-2007-spring-2008/

Pestrada8 at 06:35, 2 December 2015

2015-12-02T06:35:03Z

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	If you are interested in the topic visit: https://www.sciencenews.org/article/incredible-shrinking-proton		If you are interested in the topic visit: https://www.sciencenews.org/article/incredible-shrinking-proton

	~~==See also==~~
	=== Famous Quotes ===		=== Famous Quotes ===

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	''"We haven't the money, so we've got to think"''		''"We haven't the money, so we've got to think"''

			==See also==

	===Further reading===		===Further reading===

Pestrada8 at 06:34, 2 December 2015

2015-12-02T06:34:41Z

← Older revision		Revision as of 02:34, 2 December 2015
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	If you are interested in the topic visit: https://www.sciencenews.org/article/incredible-shrinking-proton		If you are interested in the topic visit: https://www.sciencenews.org/article/incredible-shrinking-proton

			==See also==
	== Famous Quotes ==		=== Famous Quotes ===

	''“I have to keep going, as there are always people on my track. I have to publish my present work as rapidly as possible in order to keep in the race. The best sprinters in this road of investigation are Becquerel and the Curies.”''		''“I have to keep going, as there are always people on my track. I have to publish my present work as rapidly as possible in order to keep in the race. The best sprinters in this road of investigation are Becquerel and the Curies.”''
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	==Further reading==		===Further reading===

	https://www.sciencenews.org/article/incredible-shrinking-proton		https://www.sciencenews.org/article/incredible-shrinking-proton

Pestrada8 at 06:34, 2 December 2015

2015-12-02T06:34:11Z

← Older revision		Revision as of 02:34, 2 December 2015
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	===Further reading===		==Further reading==

	https://www.sciencenews.org/article/incredible-shrinking-proton		https://www.sciencenews.org/article/incredible-shrinking-proton

	===External links===		==External links==

	http://ocw.mit.edu/courses/physics/8-13-14-experimental-physics-i-ii-junior-lab-fall-2007-spring-2008/		http://ocw.mit.edu/courses/physics/8-13-14-experimental-physics-i-ii-junior-lab-fall-2007-spring-2008/

Pestrada8 at 05:31, 2 December 2015

2015-12-02T05:31:26Z

← Older revision		Revision as of 01:31, 2 December 2015
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	''“Lord Kelvin had limited the age of the Earth, provided no new source (of energy) was discovered. That prophetic utterance refers to what we are now considering tonight, radium!”''		''“Lord Kelvin had limited the age of the Earth, provided no new source (of energy) was discovered. That prophetic utterance refers to what we are now considering tonight, radium!”''

	''		''"We haven't the money, so we've got to think"''
	"We haven't the money, so we've got to think"''

Pestrada8 at 05:31, 2 December 2015

2015-12-02T05:31:01Z

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	After this discovery, he carried out further experiments to discover what the nucleus was made of. In 1919, he claimed that the nucleus was made of protons. The experiment he carried out to make this conclusion consisted in placing a source of alpha radiation inside a cylinder of nitrogen gas that had one open end covered with a sheet of aluminium foil. Outside the opening, he placed a screen, were flashes of light were observed. These flashes were caused when particles hit the screen, but since the aluminium foil didn’t allow the alpha particles to pass through, there had to be another, smaller particle hitting the screen. With the help of two of his research students, Rutherford took measurements of the deflection angles of the particles and calculated that the proton was smaller than most nuclei, and had a positive charge equal in magnitude to that of electrons. Analyzing the distribution of the deflected alpha particles, which was different for different forces (i.e: magnetic, hard sphere, etc) he was able to assure that the nucleus was positively charged.		After this discovery, he carried out further experiments to discover what the nucleus was made of. In 1919, he claimed that the nucleus was made of protons. The experiment he carried out to make this conclusion consisted in placing a source of alpha radiation inside a cylinder of nitrogen gas that had one open end covered with a sheet of aluminium foil. Outside the opening, he placed a screen, were flashes of light were observed. These flashes were caused when particles hit the screen, but since the aluminium foil didn’t allow the alpha particles to pass through, there had to be another, smaller particle hitting the screen. With the help of two of his research students, Rutherford took measurements of the deflection angles of the particles and calculated that the proton was smaller than most nuclei, and had a positive charge equal in magnitude to that of electrons. Analyzing the distribution of the deflected alpha particles, which was different for different forces (i.e: magnetic, hard sphere, etc) he was able to assure that the nucleus was positively charged.

	Click on the following link to enjoy a Rutherford Scattering simulation!		[[Click on the following link to enjoy a Rutherford Scattering simulation!]]
	https://phet.colorado.edu/sims/rutherford-scattering/rutherford-scattering_en.jar		https://phet.colorado.edu/sims/rutherford-scattering/rutherford-scattering_en.jar

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	== Famous Quotes ==		== Famous Quotes ==

	''“I have to keep going, as there are always people on my track. I have to publish my present work as rapidly as possible in order to keep in the race. The best sprinters in this road of investigation are Becquerel and the Curies.”		''“I have to keep going, as there are always people on my track. I have to publish my present work as rapidly as possible in order to keep in the race. The best sprinters in this road of investigation are Becquerel and the Curies.”''


	“Lord Kelvin had limited the age of the Earth, provided no new source (of energy) was discovered. That prophetic utterance refers to what we are now considering tonight, radium!”		''“Lord Kelvin had limited the age of the Earth, provided no new source (of energy) was discovered. That prophetic utterance refers to what we are now considering tonight, radium!”''


			''
	"We haven't the money, so we've got to think"''		"We haven't the money, so we've got to think"''


	~~[[File:Ern_R]]~~

	===Further reading===		===Further reading===

Pestrada8 at 05:30, 2 December 2015

2015-12-02T05:30:01Z

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	[[File:Gold_foil.png]]		[[File:Gold_foil.png]]

	''''J. J. Thomson had modeled the atom as a sphere in which positive charge and mass were evenly spread. Electrons orbited within the positive sphere. This was called the plum pudding model.		''J. J. Thomson had modeled the atom as a sphere in which positive charge and mass were evenly spread. Electrons orbited within the positive sphere. This was called the plum pudding model.''

	The results of the gold foil experiment allowed Rutherford to build a more accurate model of the atom, in which nearly all of the mass was concentrated in a tiny, dense nucleus. Most of the atom’s volume was empty space. The nucleus was like a fly floating in a football stadium – remembering of course that the fly was much heavier than the stadium! Electrons orbited at some distance from the nucleus. This was called the Rutherford model. It resembles planets orbiting a star.''''		''The results of the gold foil experiment allowed Rutherford to build a more accurate model of the atom, in which nearly all of the mass was concentrated in a tiny, dense nucleus. Most of the atom’s volume was empty space. The nucleus was like a fly floating in a football stadium – remembering of course that the fly was much heavier than the stadium! Electrons orbited at some distance from the nucleus. This was called the Rutherford model. It resembles planets orbiting a star.''


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	== Famous Quotes ==		== Famous Quotes ==

	“I have to keep going, as there are always people on my track. I have to publish my present work as rapidly as possible in order to keep in the race. The best sprinters in this road of investigation are Becquerel and the Curies.”		''“I have to keep going, as there are always people on my track. I have to publish my present work as rapidly as possible in order to keep in the race. The best sprinters in this road of investigation are Becquerel and the Curies.”


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	"We haven't the money, so we've got to think"		"We haven't the money, so we've got to think"''

Pestrada8 at 05:29, 2 December 2015

2015-12-02T05:29:06Z

← Older revision		Revision as of 01:29, 2 December 2015
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	[[File:Gold_foil.png]]		[[File:Gold_foil.png]]

	''"J. J. Thomson had modeled the atom as a sphere in which positive charge and mass were evenly spread. Electrons orbited within the positive sphere. This was called the plum pudding model.		''''J. J. Thomson had modeled the atom as a sphere in which positive charge and mass were evenly spread. Electrons orbited within the positive sphere. This was called the plum pudding model.

	The results of the gold foil experiment allowed Rutherford to build a more accurate model of the atom, in which nearly all of the mass was concentrated in a tiny, dense nucleus. Most of the atom’s volume was empty space. The nucleus was like a fly floating in a football stadium – remembering of course that the fly was much heavier than the stadium! Electrons orbited at some distance from the nucleus. This was called the Rutherford model. It resembles planets orbiting a star."''		The results of the gold foil experiment allowed Rutherford to build a more accurate model of the atom, in which nearly all of the mass was concentrated in a tiny, dense nucleus. Most of the atom’s volume was empty space. The nucleus was like a fly floating in a football stadium – remembering of course that the fly was much heavier than the stadium! Electrons orbited at some distance from the nucleus. This was called the Rutherford model. It resembles planets orbiting a star.''''

Pestrada8 at 05:28, 2 December 2015

2015-12-02T05:28:20Z

← Older revision		Revision as of 01:28, 2 December 2015
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	[[File:Gold_foil.png]]		[[File:Gold_foil.png]]

			''"J. J. Thomson had modeled the atom as a sphere in which positive charge and mass were evenly spread. Electrons orbited within the positive sphere. This was called the plum pudding model.

			The results of the gold foil experiment allowed Rutherford to build a more accurate model of the atom, in which nearly all of the mass was concentrated in a tiny, dense nucleus. Most of the atom’s volume was empty space. The nucleus was like a fly floating in a football stadium – remembering of course that the fly was much heavier than the stadium! Electrons orbited at some distance from the nucleus. This was called the Rutherford model. It resembles planets orbiting a star."''

Pestrada8 at 05:26, 2 December 2015

2015-12-02T05:26:35Z

← Older revision		Revision as of 01:26, 2 December 2015
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	https://phet.colorado.edu/sims/rutherford-scattering/rutherford-scattering_en.jar		https://phet.colorado.edu/sims/rutherford-scattering/rutherford-scattering_en.jar

	[[File:Gold_foil.~~jpg~~]]		[[File:Gold_foil.png]]