Have You Ever Wondered The Importance Of Your Mobile Phone?

With the advent of new technology the way of communication is also changed. In very early days of history, pigeons were used as means of communication. Later, written messages are sent through letters by post. As the time passed, telephone came into existence and today is the era of wireless communication which gives rise to mobile phones. Mobiles are the latest invention and common way to communicate now-a-days.

Mobile phones are long range, portable and wireless electronic device of communication. A few years back, when mobile phones were not so common, the device was expensive and communication costs pretty good to the user. But in last a few years as the use of mobiles increased, their cost is decreased considerably and this factor helped a lot to make them available for common men. Mobile phones are now inexpensive, easy to use, and comfortable and equipped with almost every latest feature we desire.

Mobiles are now every one’s first choice gadget, either an elderly person or a younger one. It is like a status symbol now. Every persons hand is equipped with latest mobile models and everyone has its own reason to have this magic gadget in his hands. Every day new models of mobiles come replacing the older ones to lure the users. The interested users especially the young generation is very fond of the latest features provided in new handsets. People like the new ring tones, hello tunes and wallpapers. With this, mp3 and video recording facilities, MMS and Internet facilities are attracting the users to mobile world. Mobile users can’t even imagine their world without their handset. The importance of mobiles can be imagined by the reaction of people if they are asked to leave their handset separate from them for a day. Their life got a comma if they are keeping apart of their mobiles.

In Japan, mobile phone companies provide immediate notification of earthquakes and other natural disasters to their customers free of charge. In the event of an emergency, disaster response crews can locate trapped or injured people using the signals from their mobile phones or the small detonator of flare in the battery of every cell phone; an interactive menu accessible through the phone's Internet browser notifies the company if the user is safe or in distress.

There is no doubt that the mobile phones have made the life more easy and comfortable. Everyone is in touch with their family members, friends and other known. If we want to talk with anyone, there is no need to write a letter and have to wait for days to send the message to receiver, just we have to pick the phone and press a number and start talking. Mobile phones are comfortable way of communication over a long distance. Life becomes so easy and fast by holding the mobile phones.

Mobile phones proved to be a big help in emergencies. Mobile phones are also known as lifesavers as helping people in emergencies. If you get stuck in the middle of the road and find no one for help, you can just use a mobile phone and call for help. Along with the obvious convenience and quick access to help in emergencies big and small, mobile phones can be both economical and essential for travelers trying to stay connected.

Like every coin have two sides, mobiles phones providing a lot of advantages also shows off few disadvantages. Mobile-phone use while driving is common. It is generally agreed that using a hand-held mobile phone while driving is a distraction that brings risk of road traffic accidents. So we need to use hands free sets to avoid such hazards.

A little attention is received recently towards the potential impact of the kind of electromagnetic fields generated by cellular phones on the human brain. Accumulating evidence indicate that microwave radiation from mobile phones may cause serious diseases and disturbances in the physiology. This includes an increased cancer risk and genetic damage, disturbed brain function and other effects. Mobile phone radiation and health concerns have been raised, especially following the enormous increase in the use of wireless mobile telephony throughout the world. Hence, the head set should be kept at reasonable distance from our head and prolonged use of mobile phone should be avoided.

The Things You Should Have For Your Car Audio System

Are you having trouble finding out what you need for your car audio system? Maybe you should take a look here first. Car audio accessories can relate to a number of things including:

• Ipod and portable MPR music player accessories
• Remote controls
• Antennas
• Speakers
• Amplifiers
• Subwoofers

Ipod and portable MPR music player accessories

These accessories will let you use an ipod in your car simply by plugging your Ipod into your car CD player head unit. Some modern CD players now come with inbuilt Ipod support and can even access ITunes as well.

Remote controls

You can get wireless remote controls for many types of cd players. These are inexpensive - around $10 to $20. The wireless remote lets you operate your car stereo from a distance inside the car. Although many CD players come with a remote, it's good to have a back up for a spare as they are quite small and can be easy to misplace.

Speakers

Car speakers can in a vast array of types, sizes, styles and output ratings. Yes it is true that the better brand and more expensive speakers will generally give better sound, however most people will be happy with a good mid range speaker rather than buying from top of the range.
The most popular front speaker size for a car is 6"x9" - these are the round speakers that fit in the front doors. Alpine, Blaupunkt, Pioneer, Kenwood and Sony all make good quality 6"x9" speakers.

Subwoofers

A subwoofer in your car will allow you to hear bass more so than if you simply had speakers in the car. Subwoofers give your car that well known thumping sound that you may hear from miles away (when it's played too loudly!). IN reality, most people want a subwoofer not to be heard in the next suburb, but just for that extra bass which can really do wonders for your music.
You can choose from component subwoofers which is just the speaker on its own, or you can buy pre made enclosed subwoofer boxes which can come with one or two subwoofers in them and can be placed in the trunk or your car. Subwoofers should be carefully matched to some quality speakers and a good amplifier.

Amplifiers

Once your have your speakers and subwoofer chosen, its time to get an amplifier. The majority of people will require a simple amplifier, whilst real audio enthusiasts will need to also look into crossovers, equalizer and even using multiple amps. Amplifiers will do just that - amplify the sound allowing you to reach greater volumes and clarity. They also give better control over individual speaker output, especially when combined with a high quality head unit. Alpine, Kenwood, JBL and Clarion all make excellent amplifiers in the mid-high quality range. Amps can cost anywhere from $100 right up to $2000 or more.

Here we have outlined just some of the car audio accessory possibilities for your car. If you are still unsure of what will fit in your car, please see a car audio specialist for specific advice.

A Few Facts About The Car Audio System

In the last decade or so, automakers have placed increasing importance on in-car entertainment systems.

The core of these technologies has always been the audio system -- the noisemaker, if you will. What appeared in our dashboards more than 50 years ago as a tube radio the size of a breadbox now rivals the technical complexity of a 767.

This series is not written for aficionados, but for the average consumer who wants to gain a working knowledge of the basics of car audio design. By the end, we trust you'll have a better understanding of this technology.

What are the basics of car audio systems? How does each of the separate components operate? In the series to follow, we'll address these questions in a user-friendly and approachable format.

One note before we get started. This series will cover only original equipment manufacturer's (OEM) systems, the ones that come in your car from the factory. Unfortunately, in our limited space for this column, we're unable to deal with the vastness of the car audio aftermarket, which changes every day. Perhaps in future Tech Center articles we'll delve into this area. The good news is, most of the design concepts we're discussing here apply all the way up the line to really loud and pricey systems.

A car audio system is composed of four different groups of components. These are: head units, amplifiers, speakers, and auxiliary input devices (such as a CD changer or a graphic equalizer). Let's take a look at each.

The Head Unit
This is the heart and soul of your system. Without this component, your car audio system can't and won't work. The head unit, or, more simply, the radio, is the central processing device in the system.

Consider the way your mind works. Let's say you want to shout at somebody. Your brain tells your vocals chords to raise to a certain volume level. The words form in your mind, your mouth opens, and out comes a shout.

In a similar fashion, the head unit controls all the functions in your car audio system. Music too loud? Turn down the volume. Too soft? Turn it up. Want more bass? Add bass input.

All changes and controls come through the head unit. If you could see behind the radio in your dash, you'd find a dozen or so wires going off in all different directions to other systems in the car. These are like the nerves in your body, transmitting signals to and from the various components.

In addition to volume, bass, etc., the head unit may contain other systems within its casing. These include: tuner, cassette, equalizer, CD or amplifier. Some of these words look familiar? That's because we mentioned them above.

You see, in a home music system, where you have much more room, many stereo setups will include a separate box for each one of these components -- CD, cassette, etc. You may have a home system like that yourself. In a car, with its space limitations, these components are often crammed into one box -- the head unit. This depends upon a number of factors, such as heat, space, cosmetic design and other concerns, and every car is different.

The Amplifier
All car audio systems have an amplifier, even if it's a small one (and based upon the factory systems we've been listening to lately, a lot of them are really dinky).

Occasionally the amplifier will be attached to the rear of the head unit; however, in most systems it is hidden elsewhere in the car to better dissipate heat.

Signal amplification is actually a two-stage process, handled by two separate components. These are the preamplifier and the power amplifier.

The preamplifier (preamp, for short) is like that little voice whispering in your ear not to eat ice cream at midnight. It's a very tiny signal coming directly from the radio (in fact, the preamp resides inside the head unit). Whether it's reproducing a cassette signal, a CD signal, or an FM broadcast, the preamp puts out a signal inaudible to the human ear. This is where the power amplifier takes over.

It's the power amp's job to take the signal from the preamp and boost it into the audible range. We'll cover this in more depth in our Amplifier column in this series. Again, because of heat, most amplifiers are located away from the head unit.

The Speakers
The speakers take the boosted signal from the power amp and deliver it to your ears. The way loudspeakers work is a fascinating process and will be dealt with at length in our Speaker column in this series. Essentially, loudspeakers transform electrical energy (the amplified signal) into mechanical energy (the motion of the speaker cone).

For now, know that all sound is vibration. When you snap your fingers, this action sets off a chain of frequencies in the air that eventually vibrate the membranes in your eardrums. You hear: "Snap!"

Sound energy is measured in wavelengths, known as hertz, and goes from 20 to 20,000 cycles. A cycle is the distance from the top of one wavelength to the top of the next.

Traditional loudspeaker design calls for three components to reproduce sound energy: woofers, tweeters and midrange drivers.

As the name implies, the woofer reproduces the lower frequencies, such as a large dog barking. The tweeter, also aptly named, replicates the higher register -- a bird singing. The midrange handles the frequencies in between.

Car audio manufacturers use various assortments of these drivers to achieve the sound they want. We'll go into this at length in a future installment.

Auxiliary Input Devices
Components such as CD changers and equalizers, not to mention cell phones, navigation systems, MP3 players and many of the newer technologies, interface with the head unit for amplification and signal processing. We'll delve into this area in our final installment.

We hope this helps you gather a basic understanding of car audio technology. Look for an in-depth view inside the head unit in our next column.

Are You Thinking Of Using Water On Your Car? Here's A Few Facts To Help You Out

With the raising gas prices a new question on everyone's mind is how to save money on gas? Well how about a water hybrid conversion? You don't need to purchase a new vehicle and you can covert the one you currently own to save on gas and get better gas mileage by utilizing a water hybrid car kit or making your own from one of the many plans available online for purchase. So how exactly does your car run on water?

Well, it is not actually the water that the car will replace the gasoline with, it is a byproduct you create using the conversion kit. HHO or Browns Gas is produced through the electrical stimulation of water from a current obtained from your car's battery. By utilizing the power of browns gas you can cut your fuel consumption by up to 40%. Now thats a big savings on the pocketbook. Now I know you may be questioning the safety of using a hydrogen product, but Browns gas is quite safe and in either manner you will only be creating small quantities at a time, so any risk would be very minimal.

For $60 or so you can purchase all the components you will need to do the conversion. It is also great because it is an easy do it yourself project so you won't have to pay a mechanic or anything and the initial outlay of $60 will save you a lot at the pump. Water hybrid car kits essentially contain electrical wiring, baking soda, a sealed container, vacuum hose and obviously, the water. Nothing too scary to deal with. Basically the wiring is used to obtain a current from your cars battery that will convert the water into Browns gas, which is then introduced into your cars manifold.