Tuesday, March 28, 2023
Friday, September 25, 2009
Wireless Electricity
Ever tried to imagine life without wires? Ever thought of having wireless electricity in your home? Well, if you have, then you are surely going to have great time. If everything goes according to the plan, then you may have electricity in your home and that too without wire! Sounds too good to be true! But, it is a reality in itself and soon you will get rid of all the wires/cables in your home.
Basically, wireless energy transfer process takes place in an electrical system where electrical energy gets transmitted from a power source to an electrical load, without the presence of interconnecting wires in an electrical grid. As you can see, there are various components needed for a wireless energy transfer. The size of the components used can be determined by using the Rayleigh Criterion or Diffraction limit used in standard RF (Radio Frequency) antenna design.
The experts in the industry believe that in near future, the power supply to your home will not depend on the electricity department but on you! I know that it sounds very unusual but it is true! You may not even be required to pay the mandatory bill amount when you are spending a vacation outside or when you are shutting off the house. It may be in the next 20 or 30 years but it is certainly going to be there!
Well nowadays, the electricity that we use is hazardous for the environment because it releases large amount of Carbon dioxide in the air. Due to the rising concern about environmental problems, it has been postulated that the electricity in future is going to be clean and green! Currently, the electricity is produced mostly by consuming fuels that are on the verge of being extinct. So, you can see that the future of wireless electricity is certainly bright and brilliant.
Apart from wireless electricity, a lot many things of daily use are going to be electrified as well. You may have electric shoes, electric combs, watches, glasses, and even electrical clothes. Now, don’t you think that its’ fantastic! And if you are still not able to believe whatever I am saying, then kindly visit he futuristic shops at Akihabara in Japan for having a glimpse of the future. It will definitely bewilder and excite you!
Well, above are some of the benefits of having wireless electricity. Although the experiments and processes are being carried out but nothing has been finalized till yet. However, the future certainly seems bright and interesting! So, think positive and hope for the best!
Basically, wireless energy transfer process takes place in an electrical system where electrical energy gets transmitted from a power source to an electrical load, without the presence of interconnecting wires in an electrical grid. As you can see, there are various components needed for a wireless energy transfer. The size of the components used can be determined by using the Rayleigh Criterion or Diffraction limit used in standard RF (Radio Frequency) antenna design.
The experts in the industry believe that in near future, the power supply to your home will not depend on the electricity department but on you! I know that it sounds very unusual but it is true! You may not even be required to pay the mandatory bill amount when you are spending a vacation outside or when you are shutting off the house. It may be in the next 20 or 30 years but it is certainly going to be there!
Well nowadays, the electricity that we use is hazardous for the environment because it releases large amount of Carbon dioxide in the air. Due to the rising concern about environmental problems, it has been postulated that the electricity in future is going to be clean and green! Currently, the electricity is produced mostly by consuming fuels that are on the verge of being extinct. So, you can see that the future of wireless electricity is certainly bright and brilliant.
Apart from wireless electricity, a lot many things of daily use are going to be electrified as well. You may have electric shoes, electric combs, watches, glasses, and even electrical clothes. Now, don’t you think that its’ fantastic! And if you are still not able to believe whatever I am saying, then kindly visit he futuristic shops at Akihabara in Japan for having a glimpse of the future. It will definitely bewilder and excite you!
Well, above are some of the benefits of having wireless electricity. Although the experiments and processes are being carried out but nothing has been finalized till yet. However, the future certainly seems bright and interesting! So, think positive and hope for the best!
Tips to Choose Electrical Appliances
People are nowadays switching to electrical appliances as they provide the maximum safety and the benefit of doing fast work at homes even in the hectic schedule. These electrical are intelligent enough to automatically shut down after their work so that they can save the power. They are more energy saving as well as cost saving, portable too carry from one room to another. They completely eradicate the concept of fire so there are no chances of burnt while cooking or doing something else work.
There are various tips to consider while choosing electrical appliances.
There are traditional stores both online and offline where you can easily find the electrical appliances. You can buy the vacuum cleaners, a dishwasher, kettle, etc. thus you have a huge range of manufacturers from which to choose, but also an enormous collection of models, colors, speeds, power specifications and so on.
The best way is to go to your nearest retail center and pick up according to your choice. Another best possible way is to take the help of in-store sales person.
Buying from the stores is not as popular as it is from buying from the Internet shopping. The high street stores have the different prices and it is really less to buy from the online stores. The rates that you will find here are affordable.
There are bit problems about online stores that you have to click from one website to another, write down the information before making the choice. There is basically no one to tell you about the proper functioning, their specifications, etc.
Try to buy from the comparison site that compares and reviews a number for you. The site itself checks up on the specifications and compares what you get with what you pay, and then you can make your mind up yourself on which you want. Such comparison sites are becoming increasingly popular with online shoppers, since they can compare products sold across a wide range of online stores, and even auction sites.
Most people find it difficult to choose between one electrical appliance and another of the same type, and such websites are designed to make the choice a lot easier for you.
Try to be cautious about the plugs and safety measures before buying the electrical appliances. Make sure that you rely on the trusted sites.
Thus these are the best buying tips in order to buy the electrical appliances either from offline or online stores and know about all the specifications and their functioning.
There are various tips to consider while choosing electrical appliances.
There are traditional stores both online and offline where you can easily find the electrical appliances. You can buy the vacuum cleaners, a dishwasher, kettle, etc. thus you have a huge range of manufacturers from which to choose, but also an enormous collection of models, colors, speeds, power specifications and so on.
The best way is to go to your nearest retail center and pick up according to your choice. Another best possible way is to take the help of in-store sales person.
Buying from the stores is not as popular as it is from buying from the Internet shopping. The high street stores have the different prices and it is really less to buy from the online stores. The rates that you will find here are affordable.
There are bit problems about online stores that you have to click from one website to another, write down the information before making the choice. There is basically no one to tell you about the proper functioning, their specifications, etc.
Try to buy from the comparison site that compares and reviews a number for you. The site itself checks up on the specifications and compares what you get with what you pay, and then you can make your mind up yourself on which you want. Such comparison sites are becoming increasingly popular with online shoppers, since they can compare products sold across a wide range of online stores, and even auction sites.
Most people find it difficult to choose between one electrical appliance and another of the same type, and such websites are designed to make the choice a lot easier for you.
Try to be cautious about the plugs and safety measures before buying the electrical appliances. Make sure that you rely on the trusted sites.
Thus these are the best buying tips in order to buy the electrical appliances either from offline or online stores and know about all the specifications and their functioning.
Database Administrator: Salary Details
Database administrator is one most challenging jobs that you will find in computer field. You too must know that how important the database of any company is? You really want database to be as you have desired for. Being a computer professional one should remember that the database is the most important part of any software.
As a database administrator you are required to install, configure, troubleshoot and maintain the database system. You will be responsible for replication, backup, partitions, storage and access. You will have to monitor and optimize system performance using index tuning, disk optimization, and other method.
As far as salary is concerned it increases as your experience increases. I will provide you some details about the fact related to salary. For those who have experience less than one year, the salary is $48000 p.a. for those who have experience between one year and four year, the salary is around $55000. Those who have experience between 5 years and 9 years, the salary are about $71000. If you have experience between 10 years and 19 years the salary is around $81000 and if your experience is over 20 years, your salary will be $82000.
I must also tell you that sometimes the database professional’s charges hourly rate. However their hourly rate also varies according to their experience. It ranges from fifteen dollars per hour to 36 dollars per hour. I have seen some of the database professionals who sometimes charge around $100 per hour. The more experience you are the high rate you can charge.
As far as US is concerned the average salary of a database administrator varies from $71000 to $94000 dollars. Companies like Oracle, Accenture, people soft etc pay heavily to database administrator. I must tell you that your salary will really increase if you do a good job. I tell you that you can be in any firm but you will find one thing in common and that is the more better you will work, more you will be paid. I have seen some database professionals who are involved in database normalization and are very heavily paid. You should not be surprised if you find some data base professionals getting more than $500000 p.a.
The whole market loves those peoples who have taste to work. I must tell you that if you think professionally then you will never find the work ends. If you want more money then you have to work very hard in the beginning. You should make sure in the beginning that you have to make your name. I again emphasize that you have to make your name. Once you have made your name, then you can find yourself free and enjoy. However you have to always work hard.
As a database administrator you are required to install, configure, troubleshoot and maintain the database system. You will be responsible for replication, backup, partitions, storage and access. You will have to monitor and optimize system performance using index tuning, disk optimization, and other method.
As far as salary is concerned it increases as your experience increases. I will provide you some details about the fact related to salary. For those who have experience less than one year, the salary is $48000 p.a. for those who have experience between one year and four year, the salary is around $55000. Those who have experience between 5 years and 9 years, the salary are about $71000. If you have experience between 10 years and 19 years the salary is around $81000 and if your experience is over 20 years, your salary will be $82000.
I must also tell you that sometimes the database professional’s charges hourly rate. However their hourly rate also varies according to their experience. It ranges from fifteen dollars per hour to 36 dollars per hour. I have seen some of the database professionals who sometimes charge around $100 per hour. The more experience you are the high rate you can charge.
As far as US is concerned the average salary of a database administrator varies from $71000 to $94000 dollars. Companies like Oracle, Accenture, people soft etc pay heavily to database administrator. I must tell you that your salary will really increase if you do a good job. I tell you that you can be in any firm but you will find one thing in common and that is the more better you will work, more you will be paid. I have seen some database professionals who are involved in database normalization and are very heavily paid. You should not be surprised if you find some data base professionals getting more than $500000 p.a.
The whole market loves those peoples who have taste to work. I must tell you that if you think professionally then you will never find the work ends. If you want more money then you have to work very hard in the beginning. You should make sure in the beginning that you have to make your name. I again emphasize that you have to make your name. Once you have made your name, then you can find yourself free and enjoy. However you have to always work hard.
The Disadvantages of Computer
Computer is one of the major inventions we have seen in our life. Initially long and tough calculations could not be solved by calculators or hands or other devices. We needed something extra powerful to perform the task of calculations and hence process the data into meaningful results. So with the invention of computers, our problems were solved and it began to be used in various business purposes, home purposes, even scientific and educational purposes. Today, computers have become a part of our life and we are so addicted to it that without it we will have to suffer a great loss in our life.
The computer technology has given us Internet which is used to access information by sitting anywhere in the world and even communicate with others. Internet facilities are the emailing, browsing websites which has helped students as well as professionals to grow their knowledge and be successful in other areas of work. But because of the evolution of internet and its widespread growth, we are seeing many disadvantages of using computer. Let us discuss some disadvantages of computer which thus makes computer and its technology harmful for everybody.
1. Harmful for teenagers
The computer is changing the mind of teenagers and college going students because of their own personal computers having internet facility. They try to browse all those porn or those forbidden sites. They have learned hacking the trusted passwords of companies and destroying all their useful information thus committing the crime. Students learn all that is apart from their studies and that is the use of weapons and other armaments and information on making dangerous bombs or alcohol and drugs. Another disadvantages of computers for teenagers are the violent computer games that they are so busy in it; and stop doing their homework, watching news and forgotten the current affairs of their country. They have become lazy enough to just sit on the internet or play games. These games have made them even shoot their hated colleagues. Even children have become obese and do no exercise to stay fit and fine. Parents should be extra attentive to know what their children are doing.
2. Harmful for companies and banks
Other disadvantages include frauds on internet banking by the various hackers who break the code and password and making the balance zero. Even online shopping is becoming perilous just because of the so called internet and the skilled hackers who have not left even hacking the credit cards or ATM cards.
Thus all the companies are losing their confidential information and word of mouth with their customers and hence for them internet is not a boon as it was previously. In terms of security, the customers are losing trust be it various credit card companies or banks providing internet facilities.
Thus we see that if computers have the advantages then disadvantages are also not far behind. So nowadays a law is made to arrest all those who commit the crime to browse the porn or prohibited sites or hacking the useful information of people.
The computer technology has given us Internet which is used to access information by sitting anywhere in the world and even communicate with others. Internet facilities are the emailing, browsing websites which has helped students as well as professionals to grow their knowledge and be successful in other areas of work. But because of the evolution of internet and its widespread growth, we are seeing many disadvantages of using computer. Let us discuss some disadvantages of computer which thus makes computer and its technology harmful for everybody.
1. Harmful for teenagers
The computer is changing the mind of teenagers and college going students because of their own personal computers having internet facility. They try to browse all those porn or those forbidden sites. They have learned hacking the trusted passwords of companies and destroying all their useful information thus committing the crime. Students learn all that is apart from their studies and that is the use of weapons and other armaments and information on making dangerous bombs or alcohol and drugs. Another disadvantages of computers for teenagers are the violent computer games that they are so busy in it; and stop doing their homework, watching news and forgotten the current affairs of their country. They have become lazy enough to just sit on the internet or play games. These games have made them even shoot their hated colleagues. Even children have become obese and do no exercise to stay fit and fine. Parents should be extra attentive to know what their children are doing.
2. Harmful for companies and banks
Other disadvantages include frauds on internet banking by the various hackers who break the code and password and making the balance zero. Even online shopping is becoming perilous just because of the so called internet and the skilled hackers who have not left even hacking the credit cards or ATM cards.
Thus all the companies are losing their confidential information and word of mouth with their customers and hence for them internet is not a boon as it was previously. In terms of security, the customers are losing trust be it various credit card companies or banks providing internet facilities.
Thus we see that if computers have the advantages then disadvantages are also not far behind. So nowadays a law is made to arrest all those who commit the crime to browse the porn or prohibited sites or hacking the useful information of people.
How do fuel cells work?
Have you ever heard of the name fuel cells?
Fuel cells are basically electrochemical conversion device which means that it generates electricity by a chemical reaction. They produce electricity at the electrodes placed in the electrolyte. The electrolyte carries electrically charged elements from one electrode to the other, and a catalyst,
which speeds up the reactions.
Fuel cells are completely different from the electrochemical cell batteries as the latter store the electrical energy chemically in a closed system. But the fuel cells consume the reactant which must be refilled. As compared to the electrochemical cell batteries the electrodes in the fuel cells are catalytic and stable.
Fuel cells find their most of the use as power sources in remote locations such as remote weather stations, space crafts, massive parks, countryside locations and in military applications.
Fuel cells use hydrogen to produce electricity and even provide solutions to have a clean country as they produce electricity with very little pollution. The reason behind is that fuel cells using hydrogen and oxygen as an oxidant produce natural byproduct, water.
How does it really work let us discuss it in detail:
The basic purpose of the fuel cell is to produce electricity and direct it to outside to start a motor or illuminate the bulb. And the chemical reactions are most important for the working of the cell.
What exactly happens is; that the hydrogen atoms enter the fuel at the positive electrode and gives off its electrons. Thus the hydrogen atoms get positively charged. The electrons which are negatively charged provide the current through the wires. The oxygen enters the fuel cell at the negative electrode and combines with the hydrogen ions and electrons to convert into water. Thus the electrolyte plays an important role in passing only the proper ions to pass between anode and cathode. If proper ions are not supplied it may lead to utter disturbance and trouble resulting in no electricity.
The only thing is that as soon as the fuel is supplied with hydrogen and oxygen, electricity will be produced. In a fuel cell, chemicals always flow into the cell so it never goes lifeless. The important thing is that it becomes very difficult to make inexpensive, consistent and proficient fuel cells.
As compared to other hydro electric power plants and nuclear plants, the fuel cells are very expensive and still not efficient and reliable.
Government, private institutes and academics and business are requiring them the most.
Fuel cells produce direct current voltage which can be used in number of things such as various transports, electronic devices such as laptops, mobile phones and even in banks and hospitals, wastewater treatment, landfills etc. Thus we see how we can generate electricity with the help of a fuel cell thus making our future technology more productive and excellent.
Fuel cells are basically electrochemical conversion device which means that it generates electricity by a chemical reaction. They produce electricity at the electrodes placed in the electrolyte. The electrolyte carries electrically charged elements from one electrode to the other, and a catalyst,
which speeds up the reactions.
Fuel cells are completely different from the electrochemical cell batteries as the latter store the electrical energy chemically in a closed system. But the fuel cells consume the reactant which must be refilled. As compared to the electrochemical cell batteries the electrodes in the fuel cells are catalytic and stable.
Fuel cells find their most of the use as power sources in remote locations such as remote weather stations, space crafts, massive parks, countryside locations and in military applications.
Fuel cells use hydrogen to produce electricity and even provide solutions to have a clean country as they produce electricity with very little pollution. The reason behind is that fuel cells using hydrogen and oxygen as an oxidant produce natural byproduct, water.
How does it really work let us discuss it in detail:
The basic purpose of the fuel cell is to produce electricity and direct it to outside to start a motor or illuminate the bulb. And the chemical reactions are most important for the working of the cell.
What exactly happens is; that the hydrogen atoms enter the fuel at the positive electrode and gives off its electrons. Thus the hydrogen atoms get positively charged. The electrons which are negatively charged provide the current through the wires. The oxygen enters the fuel cell at the negative electrode and combines with the hydrogen ions and electrons to convert into water. Thus the electrolyte plays an important role in passing only the proper ions to pass between anode and cathode. If proper ions are not supplied it may lead to utter disturbance and trouble resulting in no electricity.
The only thing is that as soon as the fuel is supplied with hydrogen and oxygen, electricity will be produced. In a fuel cell, chemicals always flow into the cell so it never goes lifeless. The important thing is that it becomes very difficult to make inexpensive, consistent and proficient fuel cells.
As compared to other hydro electric power plants and nuclear plants, the fuel cells are very expensive and still not efficient and reliable.
Government, private institutes and academics and business are requiring them the most.
Fuel cells produce direct current voltage which can be used in number of things such as various transports, electronic devices such as laptops, mobile phones and even in banks and hospitals, wastewater treatment, landfills etc. Thus we see how we can generate electricity with the help of a fuel cell thus making our future technology more productive and excellent.
Information about Virtualization
Let us first know what Virtualization means?
Virtualization means to run various independent systems on a single physical computer. We simply can say the conceptualization of computer resources. It is completely a technical term which means to create a virtual version of something whether it is computer, storage device, operating system and server or network resources.
The multiple virtual systems can run on different operating systems such as Windows, Red Hat and Mac OS etc. Here each virtual machine has its own hardware as CPU, hard drive, RAM so that it appears that the virtual machines are running on the individual physical system.
Why the need to virtualize?
It is seen that the need to virtualize is nowadays becoming very important in various organizations to minimize their use of resources in order to save energy. Since we are struggling with various other means to save the energy on Earth and utilize it somewhere else, which is why the need to virtualize is very crucial.
It is a proven software technology that has rapidly changed the IT field and changing the people way of communicating. Virtualization has helped the computer professionals to save money and time and hardware resources and to be fast and productive in their work by being flexible. It also helps us in being more efficient and easily managing the work. In has helped us in lowering the expenses, increasing the security, and improving disaster recovery processes in our systems and helping us sustain our goals.
How does it work?
With the help of virtualization you can convert the hardware into software which means the virtual machine can run on its own operating system and applications just like a real computer system. Multiple virtual machines do not interfere with each other so that you all can run applications at the same time on a single computer.
We can simply run Virtualization software on any platform. What we have to do is to create virtual machines which are the collection of files located on the host system. Then we have to configure the settings on the host system, install the OS and then we are done with it. Another way is to creating master image of the virtual image which is fully configured with the OS and the necessary applications into it. Then we can easily and quickly install virtual machines by copying the master image to get the fullest server compatibility.
Types of Virtualization:
Network virtualization is a method of uniting the available resources in a network by splitting up the acquirable bandwidth into channels, each of is independent from the others, and each can be allocated to a particular server or device in real time.
Storage virtualization is the grouping of physical storage from multiple network storage devices into a single storage device that is managed from a central system. It is frequently used in storage area networks (SANs).
Server virtualization is the disguising of server resources from server users. The purpose is to spare the user from having to manage complex details of server resources while increasing resource sharing and consumption and retaining the ability to expand later.
Thus we see how much Virtualization is important to manage our resources easily, save energy, time and money.
Virtualization means to run various independent systems on a single physical computer. We simply can say the conceptualization of computer resources. It is completely a technical term which means to create a virtual version of something whether it is computer, storage device, operating system and server or network resources.
The multiple virtual systems can run on different operating systems such as Windows, Red Hat and Mac OS etc. Here each virtual machine has its own hardware as CPU, hard drive, RAM so that it appears that the virtual machines are running on the individual physical system.
Why the need to virtualize?
It is seen that the need to virtualize is nowadays becoming very important in various organizations to minimize their use of resources in order to save energy. Since we are struggling with various other means to save the energy on Earth and utilize it somewhere else, which is why the need to virtualize is very crucial.
It is a proven software technology that has rapidly changed the IT field and changing the people way of communicating. Virtualization has helped the computer professionals to save money and time and hardware resources and to be fast and productive in their work by being flexible. It also helps us in being more efficient and easily managing the work. In has helped us in lowering the expenses, increasing the security, and improving disaster recovery processes in our systems and helping us sustain our goals.
How does it work?
With the help of virtualization you can convert the hardware into software which means the virtual machine can run on its own operating system and applications just like a real computer system. Multiple virtual machines do not interfere with each other so that you all can run applications at the same time on a single computer.
We can simply run Virtualization software on any platform. What we have to do is to create virtual machines which are the collection of files located on the host system. Then we have to configure the settings on the host system, install the OS and then we are done with it. Another way is to creating master image of the virtual image which is fully configured with the OS and the necessary applications into it. Then we can easily and quickly install virtual machines by copying the master image to get the fullest server compatibility.
Types of Virtualization:
Network virtualization is a method of uniting the available resources in a network by splitting up the acquirable bandwidth into channels, each of is independent from the others, and each can be allocated to a particular server or device in real time.
Storage virtualization is the grouping of physical storage from multiple network storage devices into a single storage device that is managed from a central system. It is frequently used in storage area networks (SANs).
Server virtualization is the disguising of server resources from server users. The purpose is to spare the user from having to manage complex details of server resources while increasing resource sharing and consumption and retaining the ability to expand later.
Thus we see how much Virtualization is important to manage our resources easily, save energy, time and money.
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