Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Q. Explain Bragg's law. A monochromatic X-ray is incident on a crystal. By rotation the crystal, two successive reflections are obtained at angles of 10.0° and 23.0°. the inter planer spacing of the crystal is 2.8 À. Calculate the wavelength of X-ray.
Bragg's Law : In 1912, Bragg developed a theory to explain the diffraction by a crystal grating. He supposed that the incident wave undergoes reflection at various parallel plane of atoms in the crystal, with each plane reflect a small part of incident radiation according to ordinary laws of reflection. The diffracted beams are found only when the various plane of atom interfere constructively.
Let us consider a set of parallel atomic plane in a crystal separated by a distance'd' known as interplaner spacing. Let a X ray beam is incident at a glancing angle q. It is scattered by the atom like P and Q in any direction.
Constructive interference will take place between the parallel scattered wavelets if the path difference between the wavelets scattered from two successive atomic plane is integral multiple of wavelength.
Consider two parallel rays R1 and R2, reflected by two atoms P and Q in two adjacent layers. The ray reflected from P goes to R1' and from Q goes to R2'. Draw PA and PB normal to R2 and R2' respectively. Each of these lines, makes an angle q with PQ which is equal to d (inter planar spacing).
You will research an issue relating to money and banking. You will write an eight- to 10-page paper discussing your research, in depth. You will also need to relate your research t
Engine fuel control systems: The thrust of a turbo jet is controlled by varying the amount of fuel that is burnt in the combustion system and in order to operate the safe tempe
a circular roller of radius 10cm and of weight 1.8kn rest on a smooth horizontal surface
HOW TO MAKE ROTATING FRAME
apply equations to solve problems for specified aerodynamic applications. Need some inputs regarding this.
Sprag Clutch : Sprag clutches are used to provide the disconnect mechanism between the starter motor and the engine. The clutch will transmit drive from the starter motor, but
ELECTRICAL DE-ICING SYSTEM MAINTENANCE: Tests of the system must be carried out when the servicing schedule required it or when a component has been replaced. Typical tests ar
Rotational stability equations The torque T applied to any rigid vehicle with moving c.g. is in general determined by T = ∂HVE/∂t|E + uvE ×MugE where E is the inertial a
Q. What kind of defects are likely to result in castings due to the following? (i) Core prints on the core are undersigned. (ii) Core prints on the core
a rectangular beam of size 40mm*60mm is subjected to bending. the maximum bending stress is limited to 75N/mm^2. find the moment of resistance of beam section.
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd