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.
Engine indication systems in Aircraft: Engine indications are very important to the crew of a powered aircraft, as they indicate one of the primary parameters needed for flight
Heat conduction problem in hollow cylinder There are a lot of researches for calculating the temperature field in various shapes using different boundary and initial cond
EBITDA is 7.5 million, Net income is 1.8, 2.0 million is interest expense, corporate tax is 40%. What is the Depreciation and amortization?.
i have a project to do a remote control car by wired and the car should go foreword and backward by increasing the speed from the joystick(1) and the sound joystick control the dir
Inspection Checklist: The following checklist is a starting point and it may be added to if subsequent inspections and debriefs indicate that this would be beneficial. It sh
Inlet duct arrangement in Aircraft Engine: Wherever the APU is located, ducting will be required to bring air to the APU inlet. In figure 18.9. we can see that the inlet duct
chainig
The module content and teaching style has undergone revision since 2006-07. There are two reasons for this. First, this was the first year that Prof Badcock was responsible for the
One approach of an intersection with fixed time traffic signals, vehicles arrive at 500 veh/h on the approach. The cycle time of the intersection is 80 seconds, and the effective g
can u help me with a reliabilty assignment
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