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ELECTRON SCATTERING RESISTIVITY OF METALS ppt


Posted by: seminar surveyer
Created at: Tuesday 04th of January 2011 04:09:15 AM
Last Edited Or Replied at :Tuesday 04th of January 2011 04:09:15 AM
seminar on resistivity of metals , electron scattering and metal resistivity ppt, electron scattering resistivity of metals pdf , electron scattering in metals, resistivity of metals , electron electron scattering in metals, electron scattering ppt , electron scattering metal resistance powerpoint,
experimentally .
Further we can get ť by using eqn given below
σ = ( n*Qe2 *ť )/me ---------(1)
but ť obtained may not be accurate but we will get an idea of magnitude of ť . In a monovalent metal no of free e- /m3 is equals the no of atoms /m3 . From table we find that relaxation time T is of the order of 10-14 sec .Thus we can say that T is extremely small for monovalent metals.
from eqn. given below we can calculate mean free path λ-

λ = Vx * ťc ----------(2)


The relaxation time ť for metals refers to e- wit..................[:=> Show Contents <=:]



SEASONAL INFLUENCES ON SAFETY OF SUBSTATION GROUNDING SYSTEMS full report


Posted by: computer science technology
Created at: Thursday 21st of January 2010 01:13:25 AM
Last Edited Or Replied at :Saturday 25th of February 2012 12:39:46 AM
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ically sound solution is lowering the soil resistivity to the level required to obtain the specified resistance impedance of the ground system. In order to work out a practical approach of the soil treatment, the soil characteristics related to electrical conductivity at different seasons are to be studied.

2. INFLUENCE OF RAINING AND FREEZING SEASON ON SOIL RESISTIVITY
The resistivity of soil in nature is decided by the following factors:
Soil type
Soil resistivity varies widely depending on soil type, from as low as 1 Ohm- meter for moist loamy topsoil to almost 10,000 Ohm-meters f..................[:=> Show Contents <=:]



Journal of Alloys and Compound JALCOM -


Posted by: seminar projects crazy
Created at: Saturday 13th of June 2009 03:43:16 PM
Last Edited Or Replied at :Saturday 13th of June 2009 03:43:16 PM
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x
GeO
4
:Mn
0.04
(0 = x = 0.5).
sample. But the peak emission wavelength changes as x varies.
In Mg
2
GeO
4
:Mn the emission is observed from tetrahedrally
coordinated Mn
2+
at Mg sites . The 3d
5
electrons of Mn
2+
is
highly influenced by crystal field environment. The crystal field
environment determines the colour or the emission wavelength
of the activator. In Mg
2
GeO
4
, since we are getting red emis-
sion, crystal field has considerable effect on 3d
5
electrons. Also
energy transfer mechanism is not so efficient as in the case of
Zn
2
GeO
4
:Mn. In ..................[:=> Show Contents <=:]



SEMINAR REPORT On Giant Magnetoresistance Effect


Posted by: Computer Science Clay
Created at: Saturday 13th of June 2009 02:36:40 PM
Last Edited Or Replied at :Saturday 13th of June 2009 02:36:40 PM
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Cochin-22, Kerala
2008Page 2

Giant Magnetoresistance Effect
Department of Computer Science CUSAT
2
COCHIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
DEPARTMENT OF COMPUTER SCIENCE
CERTIFICATE
This is to certify that the report entitled
Giant Magnetoresistance Effect
is a
bona fide record of the seminars presented by Mr. Tomsy Paul in partial fulfillment of the
requirements for the award of M.Tech. Degree in Computer and Information Science of
Cochin University of Science & Technology, during the academic year 2007-2008.
G. Santhosh Kumar
Prof. Dr. K. Poulose Jacob
Seminar G..................[:=> Show Contents <=:]



ANALYSIS OF RESIDUAL STRESSES IN MAIN CRANKSHAFT BEARINGS AFTER INDUCTION SURFACE


Posted by: computer science crazy
Created at: Friday 17th of April 2009 07:52:50 AM
Last Edited Or Replied at :Friday 21st of December 2012 11:11:44 PM
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e depth of the induction surface hardened layer

¢ Additional grinding of the induction surface hardened surface ..................[:=> Show Contents <=:]



HIGH TEMPERATURE SUPER CONDUCTIVITY


Posted by: seminar projects crazy
Created at: Friday 30th of January 2009 01:28:20 PM
Last Edited Or Replied at :Friday 30th of January 2009 01:28:20 PM
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electric current with no resistance and extremely low losses. This ability to carry large amounts of currents can be applied to electric power devices such as motors and generators and to electricity transmission in power lines. For example, superconductors can carry as much as 100 times the electricity ordinary copper or aluminium wires of same size.Scientists had been intrigued with the concept of superconductivity since its discovery in the early 1900?s, but the extreme low temperature the phenomenon required was a barrier to practical and low cost application. This all changed in 1986 when..................[:=> Show Contents <=:]



EXTRAORDINARY MAGNETO RESISTANCE


Posted by: seminar projects crazy
Created at: Friday 30th of January 2009 01:20:50 PM
Last Edited Or Replied at :Friday 30th of January 2009 01:20:50 PM
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capacity is very high compared to the normal maximum sensing capacity of 13 Gb/sq. inch. The introduction of this technology can solve the problem of data handling to a..................[:=> Show Contents <=:]



Tamper Resistance


Posted by: computer science crazy
Created at: Sunday 21st of September 2008 11:38:04 PM
Last Edited Or Replied at :Sunday 21st of September 2008 11:38:04 PM
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al assets, a tasteful integration of a variety of technologies and processes is necessary. Tamper-resistance is being increasingly used as an important piece of a more comprehensive security system. It provides an effective barrier to entry and protects digital assets in the embedded systems from most people and most attacks. Embedded systems pose unique security challenges because they are largely used in relationships where one party wants to put a secure, embedded device, in the hands of another, with the assurance that the second party cannot modify/hack the device. First, we outline the m..................[:=> Show Contents <=:]



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