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ENERGY LEVELS
The energy levels, measured in electron volts (e.v.) in which orbiting electrons exist comply with a law of physics which states that energy can be given to electrons only in discrete amounts (quanta) which means that there are energy values that an electron cannot acquire. From this it can be deducted that there is a forbidden energy gap between each of the allowed energy bands K to O.
The width of the forbidden energy gap between the top of the valence band and the bottom of the conduction band determine the electrical conducting properties of materials.
Microwave diathermy The microwave diathermy can be produced in special tube which can be placed several inches from the region to be treated . Microwave can penetrate deep int
Q. Illustrate what are the characteristics of dead stars? Answer:- Dead stars are typically cold balls of material in empty space. A teaspoonful of white dwarf substance w
what type of charge carriers are involved in conduction?
Static electricity: If electrons are removed from one material and placed on another, or if they are moved from one region of a piece of material to another, we have a separati
In airplane's airspeed is 2.0 x 102 km/h due east. Because of a wind blowing to the north, it is approaching its destination 15° north of east. a. What is the wind speed? b.
quality standards and expectations for bathymetric survey
Reflection of a Pulse at a Free End Let's assume a pulse moving by a medium - perhaps by a rope or a slinky. What happens to the pulse while it reaches the end of in which medi
A ray of light is incident on one of the faces of a parallel sided glass slab at an angle of incidence 510 31' of thickness 0.12 m . Evaluate the lateral shift produced given refra
1. A given radioactive sample emits only one type of radiation. When placed in a counter for 10 minutes, 1632 counts are registered. Then the sample is removed and a background
The end of a pipe is inserted into water. A tuning fork is held over the pipe. If the pipe resonates at lengths of 15 cm and 35 cm, what is the frequency of the tuning for
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