Bragg's Law - Revision history

Rchawla32: /* Connectedness */

2015-12-06T02:18:25Z

Connectedness

← Older revision		Revision as of 22:18, 5 December 2015
Line 43:		Line 43:
	'''Is there an interesting industrial application?'''		'''Is there an interesting industrial application?'''

	Bragg's Law is an important part of X-~~ray crystallography~~.		Bragg's Law is an important part of [http://www.ruppweb.org/Xray/101index.html X-Ray Crystallography].

	==History==		==History==

Rchawla32: /* History */

2015-12-06T02:17:30Z

History

← Older revision		Revision as of 22:17, 5 December 2015
Line 47:		Line 47:
	==History==		==History==

	~~Put this idea~~ in ~~historical context~~. ~~Give~~ the ~~reader~~ the ~~Who~~, ~~What~~, ~~When~~, ~~Where~~, ~~and Why~~.		was first proposed by William Lawrence Bragg and in the early 20th century in response to their discovery that crystalline solids produced surprising patterns of reflected X-rays. Bragg (1890-1971) presented his derivation of the reflection condition at a meeting of the Cambridge Philosophical Society on 11 November 1912. Although simple, Bragg's law confirmed the existence of real particles at the atomic scale, as well as providing a powerful new tool for studying crystals in the form of X-ray and neutron diffraction. William Lawrence Bragg was 25 years old, making him then, the youngest physics Nobel laureate.

			[http://reference.iucr.org/dictionary/Bragg's_law]

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

Rchawla32: /* Connectedness */

2015-12-06T02:12:03Z

Connectedness

← Older revision		Revision as of 22:12, 5 December 2015
Line 33:		Line 33:

	==Connectedness==		==Connectedness==
	#How is this topic connected to something that you are interested in?		'''How is this topic connected to something that you are interested in?'''

	Electromagnetic radiation is all around us and I chose this topic after reading chapter 23 in the textbook, I did additional reading on the topics and learned that EM Radiation is related to Bragg's Law.		Electromagnetic radiation is all around us and I chose this topic after reading chapter 23 in the textbook, I did additional reading on the topics and learned that EM Radiation is related to Bragg's Law.

	#How is it connected to your major?		'''How is it connected to your major?'''

	As a Materials Science & Engineering major, I have encountered this topic in one of the chapters of MSE2001. It is important for understanding crystal lattice properties.		As a Materials Science & Engineering major, I have encountered this topic in one of the chapters of MSE2001. It is important for understanding crystal lattice properties.

	#Is there an interesting industrial application?		'''Is there an interesting industrial application?'''

	Bragg's Law is an important part of X-ray crystallography.		Bragg's Law is an important part of X-ray crystallography.

Rchawla32: /* Examples */

2015-12-06T02:11:14Z

Examples

← Older revision		Revision as of 22:11, 5 December 2015
Line 19:		Line 19:

	==Examples==		==Examples==

	~~Be sure to show all steps in your solution and include diagrams whenever possible~~

	===Simple===		===Simple===

Rchawla32: /* References */

2015-12-06T02:10:49Z

References

← Older revision		Revision as of 22:10, 5 December 2015
Line 62:		Line 62:
	==References==		==References==

	~~https://en.wikipedia.org/wiki/Bragg%27s_law~~

	http://www-outreach.phy.cam.ac.uk/camphy/xraydiffraction/xraydiffraction7_1.htm		http://www-outreach.phy.cam.ac.uk/camphy/xraydiffraction/xraydiffraction7_1.htm

			https://en.wikipedia.org/wiki/Bragg%27s_law

	http://www.vanbokhoven.ethz.ch/education/XRD_excercises		http://www.vanbokhoven.ethz.ch/education/XRD_excercises

	[[Category:Which Category did you place this in?]]		[[Category:Which Category did you place this in?]]

Rchawla32: /* The Main Idea */

2015-12-06T02:10:30Z

The Main Idea

← Older revision		Revision as of 22:10, 5 December 2015
Line 3:		Line 3:
	==The Main Idea==		==The Main Idea==

	Bragg's Law is a phenomenon in physics that relates the angles for coherent & incoherent scattering of crystal lattices, the wavelength of the incident wave, and the distance that the wave travels; the distance traveled by the wave depends on the separation of the layers and the angle at which the X-ray entered the material. This diffraction occurs when radiation, with wavelength comparable to atomic spacings, is scattered in a specular fashion by the atoms of a crystalline system, and undergoes constructive interference. The waves must interfere constructively in order for Bragg's Law to be valid. Also, the wave which reflected from the surface needs to have traveled a whole number of wavelengths while inside the material.		Bragg's Law is a phenomenon in physics that relates the angles for coherent & incoherent scattering of crystal lattices, the wavelength of the incident wave, and the distance that the wave travels; the distance traveled by the wave depends on the separation of the layers and the angle at which the X-ray entered the material. This diffraction occurs when radiation, with wavelength comparable to atomic spacings, is scattered in a specular fashion by the atoms of a crystalline system, and undergoes constructive interference. The waves must interfere constructively in order for Bragg's Law to be valid. Also, the wave which reflected from the surface needs to have traveled a whole number of wavelengths while inside the material. The path difference between two waves undergoing interference is given by 2dsinθ, where θ is the scattering angle. Bragg's Law ultimately describes the largest angle θ such that constructive interference is at its strongest. [http://www-outreach.phy.cam.ac.uk/camphy/xraydiffraction/xraydiffraction7_1.htm]

	The path difference between two waves undergoing interference is given by 2dsinθ, where θ is the scattering angle. Bragg's Law ultimately describes the largest angle θ such that constructive interference is at its strongest.

	===A Mathematical Model===		===A Mathematical Model===

Rchawla32: /* References */

2015-12-06T02:09:47Z

References

← Older revision		Revision as of 22:09, 5 December 2015
Line 63:		Line 63:

	==References==		==References==

			https://en.wikipedia.org/wiki/Bragg%27s_law

	http://www-outreach.phy.cam.ac.uk/camphy/xraydiffraction/xraydiffraction7_1.htm		http://www-outreach.phy.cam.ac.uk/camphy/xraydiffraction/xraydiffraction7_1.htm

	~~https://en.wikipedia.org/wiki/Bragg%27s_law~~

	http://www.vanbokhoven.ethz.ch/education/XRD_excercises		http://www.vanbokhoven.ethz.ch/education/XRD_excercises

	[[Category:Which Category did you place this in?]]		[[Category:Which Category did you place this in?]]

Rchawla32: /* A Mathematical Model */

2015-12-06T02:09:24Z

A Mathematical Model

← Older revision		Revision as of 22:09, 5 December 2015
Line 9:		Line 9:
	===A Mathematical Model===		===A Mathematical Model===

	[[File:Braggs_law.jpg]] n is an integer describing the order of the reflection.		[[File:Braggs_law.jpg]] [https://en.wikipedia.org/wiki/Bragg%27s_law]
			n is simply an integer describing the order of the reflection.

	Bragg's law, as stated above, can be used to obtain the lattice spacing of a particular cubic system through the following relation:		Bragg's law, as stated above, can be used to obtain the lattice spacing of a particular cubic system through the following relation:

Rchawla32: /* See also */

2015-12-06T02:07:41Z

Rchawla32: /* External links */

2015-12-06T02:07:22Z

External links

← Older revision		Revision as of 22:07, 5 December 2015
Line 61:		Line 61:

	===External links===		===External links===
	[http://www.~~scientificamerican~~.com/~~article~~/~~bring~~-~~science~~-~~home-reaction-time/~~]		[http://www.britannica.com/science/Bragg-law Britannica - Bragg's Law]


	==References==		==References==

← Older revision		Revision as of 22:07, 5 December 2015
Line 53:		Line 53:

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

	~~Are there related topics or categories in this wiki resource for the curious reader to explore? How does this topic fit into that context?~~

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