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GALLIUM PHOSPIDE: It has band gap of 2.3ev. it can be used for light emitting diodes which can emit green or red light. The red light is obtained with zinc or cadmium oxide doping.
SELENIUM: It is found in crystalline and non-crystalline form. It is used as rectifier material for photo voltaic cells and for xerographic printing. Selenium films are used as photo electric light meters. Its melting point is 2200C.
LEAD: it is soft heavy and bluish gray metal. It is highly resistant to many chemical actions but can corrode by nitric acid, lime and rotten organic substances. Lead and its compounds are toxic. It is mechanically weak it cannot withstand vibrations at high temperatures. It alloys easily with Tin and zinc and forms many commercial alloys, including solders and bearing metals.
When two molecules approach each other, the charges in each are disturbed and redistributed in a fashion that the average distance among the unlike charges in the two molecules is
A soccer ball is kicked from a 22-m-tall platform. It lands 15 m from the base of the platform. What is the net displacement of the ball?
We can produce energy from dynamic Casimir effect?
What is curvilinear motion? Basically, it's any motion that's produced or bounded by curved -- as opposed to straight -- lines. In high school, curvilinear motion is usually
Making a simple refracting telescope To make a simple telescope, two cardboard tubes will be needed, one fitting inside the other. It is not possible to make a satisfactory t
what is electrostatic shielding
Primary cell Is that cell in which electrical energy is produced because of chemical energy. In the primary cell, chemical reaction is irreversible. This cell cannot be recharged.
Adding 2 Vectors An easy demonstration of adding 2 vectors graphically. Also demonstrates in which vector addition is commutative.
a 10 m radius of thin spherical tank is to be used to store gas if the wall thickness of the tank is 10 mm and the 125 mpa the maximum possible gas pressure neglecting the radial s
Loudness: It is the characteristics of sound by a faint sound can be distinguish by a loud sound is known as loudness.
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