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. Differentiate crystalline and amorphous materials?
(a)Crystalline solids: Those solids in which the, ions atoms or molecules in a definite regular repeated three dimensional pattern are called solids. Thus the atoms or molecules in crystalline solid are arranged just as the sliders do on the parade ground.
e.g.Calcite, rock-salt, quartz, sugar-mica, diamond etc.
(b)Amorphous solids: Those solids in which the constituent atoms or molecules are not arranged in a definite pattern, repeating in three dimensions are called amorphous solid or materials.
e.g.plastic, glass etc.
Crystalline materials
Amorphous materials
(a) The constituent's ions or molecules in a given crystalline solid are arranged in a definite geometrical pattern.
The constituent's atoms or molecules in these solids are not arranged in a regular definite geometrical pattern.
(b) These have a definite external geometrical shape.
These are not regular in their external shape.
(c) These have a long range order of atoms or molecules.
These do not have a long range order of atoms or molecules.
(d) All the bonds among molecules in these solids are equally strong. The crystalline solids have a sharp melting point.
Amorphous solid do not have a sharp melting point, because the weakest bond get reputed at lower temperature and stronger bonds get reputed at higher temperature.
(e) These are anisotropic i.e. the bond of crystalline solids have directional properties.
These solids sre isotropic as their physical properties are same in all direction.
In crystalline solids the angles between the flat surfaces of the crystal are constant.
These are super cooled liquid of high viscosity.
what is differnce between need and requirement?
Dynamic balancing principles: We must all be familiar with the effects of unbalance in one form or another, but perhaps the most common effect is that arising from wheel unbala
AIRCRAFT WEIGHING NOTE: The C.A.A. will consider applications from aircraft constructors and operators to weigh certain types of aircraft on a sampling basis. (i.e. repre
Synchro resolvers for low load: Both transmitter and receiver rotors are energised by the same AC supply and will induce equal and opposing voltages in the stator coils provide
history of telecommunication
The home work is to make an model based system architecture for an electrical car. in Enterprise Architecture with SysMl language.
Numerical solutions to equations: Many practical problems in engineering involve complex boundary conditions and variable properties that cannot be solved analytically, creat
is there any open innovation engineering web portal in india
You are interested in proposing a new venture to the management of your company. Pertinent financial information is given below. BALANCE SHEET Cash 2,000,000 Accounts Payable and
Fuel system inhibiting. The fuel used in turbine engines usually contains a small quantity of water which, if left in the system, could cause corrosion. All the fuel should th
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: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd