initial commit / add all books

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diff --git a/1172/CH3/EX3.7/3_7.txt b/1172/CH3/EX3.7/3_7.txt
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+ # Problem 7 # 

+

+ Standard formula Used 

+ lambda = h / (m * v)

+ de Broglie wavelength of particle is 3.312000e-37  m.

+ Here the de Broglie wavelength is too small to be detected. This wavelength is far smaller than the wavelength of X ray.

+ Hence diffraction experiment with such a stream of particle will not be successful.

diff --git a/1172/CH3/EX3.7/Example3_7.sce b/1172/CH3/EX3.7/Example3_7.sce
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+clc

+//Given that

+angle = %pi/2 // scattering angle of photon

+h = 6.624e-34 // plank's constant

+v = 2e6 // speed of particle

+e = 1.6e-19 // charge on electron

+m = 1e-3 // mass of particle in kg

+//Sample Problem 7 Page No. 137

+printf("\n\n\n # Problem 7 # \n")

+printf("\n Standard formula Used \n lambda = h / (m * v)")

+lambda = h / (m * v) //calculation of de Broglie wavelength of particle

+printf("\n de Broglie wavelength of particle is %e  m.", lambda)

+printf("\n Here the de Broglie wavelength is too small to be detected. This wavelength is far smaller than the wavelength of X ray.\n Hence diffraction experiment with such a stream of particle will not be successful.")

+