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Electronic conductors 2009-01-02 04:29:00 When the atoms combine to form a molecule, their atomic orbitals overlap to form molecular orbitals. The number of molecular orbitals formed is equal to the number of atomic obitals overlapped. Half the number of molecular orbitals has a lower energy than the rest. These are known as bonding molecular orbitals and the rest of the molecular orbitals, with a higher energy are called antibonding mole Read more:Electronic
Radiation therapy 2008-11-17 08:55:00 Radiation can cause cancer. However, it can be used to treat cancer. In treating cancer, cells are exposed to larger doses of radiation. It is inevitable that normal cells in the vicinity of the treated area are also affected and killed. It is for this reason that cancer patients receiving radiation therapy often suffer side effects such as nausea, vomiting, loss of hair, loss of appetite, dependi Read more:Radiation
Peer pressure 2008-11-16 09:14:00 If you named all the people you know who are your age, you would end up with a very long list. All of your friends and other people in your age group are your peers. They support you and give you confidence as you move from depending on your family to being on your own. Your peers also have expectations of you. They may pressure you to act and think like everyone else in a group. Peer pressure is
Types of radiation 2008-11-14 08:35:00 Radiation that is of interest in radiation biology can be divided in to three types.1. radiation from radionuclide; both natural and man made2. Electromagnetic radiation; radio, microwave, infrared, light, UV, x-ray and gamma rays etc.3. all sub atomic particles; man made and naturalThese types can be grouped according to their origin as natural and man made.Natural radiation- radiation from natur
What makes a good friend? 2008-11-13 09:39:00 Good friend
share a number of special qualities. You and your friend expect these qualities in each other. For example, good friends are loyal and faithful. They will not allow others to say untrue or mean things about you. You also expect them to be reliable, or dependable. You can count on them to do what they say.Good friend understand how you feel if you are sad or disappointed. In short, they Read more:makes
Energy from fusion 2008-11-13 08:11:00 Thermonuclear fusion
has been going on in stars since the creation of the universe some 15 billion years ago. The first such event took place on the earth only in October 1952, when the first fusion (hydrogen) bomb was exploded. The high temperature needed to initiate the reaction was provided by a fission bomb used as a trigger. Scientists have been trying very hard to create thermonuclear fusion Read more:Energy
How is Helium useful to people? 2008-11-12 07:51:00 Helium is a natural gas that is lighter than air and does not burn. A gas is a matter that has no definite shape or volume. Helium has an ability to lift things in to the air. Helium is an important natural resource with many uses. A natural resource is a natural material on earth that is necessary or useful to people
.Helium can be used in many ways when mixed with other gases. Helium mixed with O
Where families can find help 2008-11-11 12:02:00 A person who is being abused need outside help right away. The first step in getting help is for the abused person to tell a trusted adult. The abused person may need to be in a safe place. A teacher or school counselor can be a good first person to talk with. Whenever there is immediate danger, the police should be called. The abuser also needs help. Professionals can help the abuser understand t
Dealing with family problems 2008-11-11 11:59:00 All families have problems
. You have learned about some ways families can deal with changes on their own. However, some problems are far too serious to solve by sharing feelings and helping each other. In these situations, the family should seek outside help. Many types of counseling are available.One of the most serious family problems is abuse, or a pattern of mistreatment of another person. An
Graphical representation 2008-11-11 09:17:00 A graphical representation is more informative. It reveals maxima, minima, inflection points, or other significant features in data, which might be overlooked, in a tabular representation. The steps to be followed when preparing a satisfactory graph are summarized below.Select a good quality rectangular coordinate graph paper for ordinary purposes. The scale for independent variable should be plot Read more:Graphical
Energy from fission 2008-11-08 19:40:00 We have seen that when fission is induced in 235U by a neutron, more than two neutrons are produced. Then neutrons cause fission in nearby 235U nuclei and the fission events can propagate in chain reaction. If the process is controlled, we can generate nuclear power. Controlled fission produces the nuclear bomb.Controlled nuclear fission is done inside a reactor, which is a strong solid enclosure, Read more:Energy
PC errors and Solutions 2008-11-08 08:15:00 Do you know solutions for PC errors? Here you can see some solution for some PC errors.1.MONITOR LED IS BLINKINGCheck all the connections like Monitor Cable, Data cables, RAM, Display Card, CPU connections.2. CONTINUOS THREE BEEPSProblem in RAM Connection.3. THREE BEEPS (one Long 2 Short)Problem in Display Card Connection4. THREE LONG BEEPS PERIOD WISEProblem in BIOS or RAM (Basic Input Output Sys
Make your system faster 2008-11-08 08:13:00 We use many method for faster our computer system. System restore is the one of the methods we use. By default, Windows XP creates a restore point after installing Windows XP, once every 10 hours that Windows XP is running, or every 24 hours. It also creates a restore point when you install a new program. You can manually create restore points at any time. You can end up with a number of restore p
Dealing with changes 2008-11-08 08:11:00
Every family can expect to go through changes
. Some changes, like the birth of a new baby or the marriage of grown children, are generally happy events. They also require family members to take on new roles and responsibilities. Other family changes, like moving, can be difficult. Family members can plan ways to help each other adjust. Separation and divorce can bring on negative stress
The NMR spectrometer 2008-11-08 08:08:00
The NMR spectrometer consists essentially of powerful magnet and a radio frequency source. The magnet used can vary in strength from 1.4T (Tesla) in the older machine to 22 T in the most modern machines. Magnets of over 2.0 T are called superconducting magnets and should be maintained at the temperature of liquid helium. Moat NMR machines in use today have superconducting magnets. Protons ach
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