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Solid State Physics

Solid State Physics is the branch of physics that deals with the physical properties of solid materials, especially the electromagnetic, thermodynamic, and structural properties of crystalline solids.

813 Questions

What is one way that kinetic is different from momentum?

Be careful with this one. From how you posted the question, the most relative difference is ....The spelling of the words. They have different order of letters, they don't use all of the same letters, they sound different when spoken, and have different amount of letters. One word is longer than the other.

True or false the first computers to use the integrated circuit were known as third-generation computers?

True.

Some of these computers used hybrid integrated circuits (e.g. IBM System/360) and some used monolithic integrated circuits (e.g. Apollo Guidance Computer, Minuteman II Guidance Computer)

Why are tin and lead not used as semiconductor?

because they are not semiconductors. They are metals and rather good conductors.

Are there materials other than just silicon that are being used to make semiconductor or other solid state electronic devices?

The other materials other than just silicon used to make semiconductors and other solid state electronic devices are germanium and gallium arsenide.

Laser beam needs electricity or not?

Yes, a laser beam needs electricity to generate and maintain its coherent light. Lasers rely on an energy source to excite the atoms within the laser medium, causing them to emit light in a focused and directional manner.

What are the 7 geometric forms of crystalline solid?

1. Cubic

2.Tetrahedral

3.Orthorhombic

4.manoclinic

5.triclinic

6.hexagonal

7.rhombohedral

How lond does it take for ice to melt in olive oil?

That will depend on the temperature of the surroundings, including the olive oil. It will also depend on the size and shape of the ice.

When was the semiconductor built?

Semiconductors aren't built, they are chemicals. Maybe you are thinking of semiconductor electronic components.

The first semiconductor discovered was galena (lead sulfide) which was first used in a practical electronic component in 1874. The next semiconductor discovered was copper oxide which was first used in a practical electronic component in 1924. After that many others were discovered including selenium, germanium, and silicon.

It was not practical to build electronic components using silicon until 1958 when Fairchild perfected their silicon mesa process, then in 1959 their silicon planar process.

Why rubber tires are preferred to steel?

Rubber tires are preferred to steel tires because if we had steel tires driving over the smallest pebble would be a very bumpy ride. Rubber tires are flexible and will be smooth when going over rocks. Not to mention, if we had steel tires the government would have to replace the roads everyday with the amount of people tearing them up with steel tires. Also, rubber tires wear out and that means you will have to buy new ones again..

Which element is not suitable to dope silicon to produce an n-type silicon?

Hydrogen, Helium, Lithium, Beryllium, Oxygen, Fluorine, Neon, Magnesium, Iron, Cobalt, Cadmium, Ruthenium, Iodine, Xenon, Iridium, Platinum, Uranium, Plutonium, Americium, and many more.

The only four elements that are suitable are easier to list: Nitrogen, Phosphorus, Arsenic, and Antimony.

What property of the materials used in computer chips makes them useful as switches that turn electric current on and off?

They are semiconductors and their electrical properties can be very precisely controlled by adding dopant impurities to create a wide variety of components integrated into one chip. Transistors of various types created by this doping process can act as switches or amplifiers depending on the other components integrated around them and connected to them.

Definition of solid angle?

solid angle is the ratio of the intercepted area dA of the spherical surface , described about the apex O as the centre ,to square of its radius r

A wire fix at the upper end stretches by applying a force F what is the work done in stretching the wire?

if the wire experience a change in length (dx), the work(W) is simple equal to:

W = F * dx, where F = mg

if the wire din experience any lengthen effect, the W will equal to zero due to dx = 0.

What is ballistic transport?

ballistic transport means movement of carriers through the channel with few or no scattering at all quantum effects are expected to play major role

What is meant by operating temperature of semiconductor?

The operating temperature of a semiconductor is the temperature at which a semiconductors exhibits the properties of a normal conductor.

What is a translation vector in crystallography?

Together with a rotation matrix, R, a translation vector, t, yields a relation between two equivalent positions in a crystal, given by Rx+ t = x'. Please see the link.

What is porous thin films?

porous thin film- used in chromatographic tech. where thin layer or film is made on the surface of glass slide. porous nature -having pores (space between the particles) help this system for separation of component. for more detail see chrometographic technique.

Why laser produces Gaussian beam?

A laser produces a Gaussian beam because of the diffraction effect of the laser beam passing through an aperture. The electric field distribution of the beam follows a Gaussian shape due to the wave nature of light. This results in a beam that has a bell-shaped intensity profile with a narrower central peak and gradually decreasing intensity towards the edges.

What energy do particles gain when they are heated?

Usually, the kinetic energy of the individual particles increases. It's also possible for the particles to gain potential energy - this happens when a substances changes its state of matter. For example, when you add heat to ice (at zero degrees), it will melt, converting into water (also at zero degrees).

What is lindemann rule?

The lindemann rule or criterion predicts the melting point of solids. Its a shake itself to pieces model-- if the root mean square amplitude of vibration leads to one atom hitting another then the solid melts.

It is suprisingly good at predicting mps for some substances. Lindemann proposed it in 1910.

How might a gallium chip compare with a germanium chip?

Gallium is a metal, not a semiconductor. You cannot build a transistor or even a diode with a piece of metal, forget an IC chip containing several transistors.

To create a gallium based semiconductor, it must be ALLOYED with one or more of the following elements: nitrogen, phosphorus, arsenic, or antimony. The simplest semiconductor alloys are: gallium nitride, gallium phosphide, gallium arsenide, and gallium antimonide. Examples of other semiconductor alloys are: gallium nitride phosphide, gallium phosphide arsenide, etc. (these are used in some types of LEDs).

The most common gallium alloy semiconductor for making transistors and IC chips is gallium arsenide. Compared to both silicon and germanium, transistors made of gallium arsenide are significantly faster, and additional speed can be obtained by using nonsaturating logic circuits like ECL.

Are all of Samus Aran's beam weapons technically lasers?

No. A laser is a device that emits a narrow but intense beam of light. Samus' beam weapons have a variety of effects that could not be explained by lasers.

What is quantum free electron theory of metal?

Classical free electron theory could not explain many physical properties. In 1928, Sommerfeld developed a new theory applying quantum mechanical concepts and Fermi-Dirac statistics to the free electrons in the metal. This theory is called quantum free electron theory.

Why covalent crystals r opaque?

Covalent crystals are not necessarily opaque. Think of diamond, pure quartz crystals, pure aluminium oxide crystals these all are colorless and transparent.