Dec 12

Tips to Minimize the Dangers of Cellphone Usage

Posted in Technology
Tips to Minimize the Dangers of Cellphone Usage

Cellphone usage worldwide numbers in the billions. If there is a possibility of injury from these devices, then a lot of people will be affected.

A cellphone is actually a radio transmitter and receiver. It sends and recieves radio frequency electromagnetic waves. The received signals are fairly low level, so I will concentrate on the signal transmitted from the cellphone.

Cellphones transmit mainly at frequencies of 900, 1800 and 1900 Megahertz (MHz). A microwave oven cooks food using a frequency of 915 MHz or 2450 MHz. In other words, the food is not fussy about what frequency you use, as long as it’s in that range, say 900 to 2500 MHz. Which means, cellphones use Microwave Oven frequencies.

A microwave oven puts out a power of about 1000 watts, on average. If you put your head in a microwave oven, it will take about an hour to cook to a nice sizzling crisp.

A cellphone transmits at a power of about 3 watts, and it self adjusts it’s power continually to compensate for poor signal paths, up to a maximum of 5 to 7 watts. Not much, but there’s a twist…

A microwave oven spreads it’s radiation over the whole oven cavity, so that the food is cooked uniformly.

A cellphone has a tiny, array antenna, measuring maybe 2 or 3 cm in length, and it’s right next to your ear. So 5 watts of power is radiating into your head into an area of perhaps 3cm by 0.75cm. That’s a lot of power when concentrated in such a small area.

The cellphone manufacturers have said that they have put “shields” into their phones to keep radiation risks to a minimum.

If you turn around while making a call, does the call cut out or the audio disappear at any time? No, it doesn’t. Radio waves, like light waves, travel in a straight line. If your head got in between the cellphone and the cell transmitter tower, then the signal should be blocked (shielded) by the shield in the phone, as the waves can’t bend once they’ve left the phone.

Which means that those microwaves are going through your head, all the time.

Whenever you’re “on the phone,” you are being microwaved just like the roast in your microwave oven.

So What Can You Do?

If you’ve got a handsfree kit, use it if it’s practical. Don’t use bluetooth – it also transmits radiowaves close to your head, albeit at different frequencies.

If your phone has a loudspeaker, switch it on and speak at a distance. The guy on the other side will still hear you perfectly.

Buy phones with a low Specific Absorption Rate (SAR)

Don’t let children make long calls. Their soft skuls are much more affected than the hard heads of adults. (See “The Stewart Report.”)

Swop ears every minute or so, to give your head time to “cool down” on that side.

Don’t hold the phone next to your ear while connecting – this is when it transmits at maximum power.

Avoid making calls in weak reception areas, as the cellphone will boost it’s output power to make sure it stays connected.

Keep your conversations short.

Use SMS’s whenever possible.

Avoid sleeping with a cellphone under your pillow. Cellphones transmit even when you are not using them, exchanging data and checking signal strength, at regular intervals.

Avoid carrying the cellphone close to your body. This applies especially to the breast pocket of people with heart problems.

Use a landline whenever possible.

Many people have proven health problems from cellphone usage, brain tumors being the most common, followed by loss of memory, impaired brain function and other symptons. Usually these symptons take a few years to surface.

By taking the simple precautions listed above, we can actually save our lives. Tell your friends too. There’s a lot of people out there that need to know these facts.

You can thank me later!

 

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Dec 5

Tips On Improving Your Cellphone Battery Life

Posted in Technology
Tips On Improving Your Cellphone Battery Life

Cellphones, for all practical purposes, have become a necessity in the modern world. Not only are they used as a communication device, they are now increasingly seen as a personal computer system with functionalities that were previously associated with the bulky desktop. Powerful as they may be, modern cellphones are limited by the fact that they rely on the batteries which do not hold a large amount of charge. Thus, in this article we will examine ways in which cellphone users can extend their cellphone’s battery life.

Turn Off The Vibrate Feature

One of the best techniques to increasing the battery life of a cellphone is by turning off the vibration mode ringer option. This is one most energy draining feature found in today’s cellphone, the energy required for turning the tiny motor which causes the phone to vibrate is almost double to that required for the same phone to ring.

Turn Off Back Light

Most people generally use their cellphones in areas with sufficient background light, hence in these places there is no real need to have the back light on. However, if you do require to use the back light then its best to keep your back light time out to no more than 3 seconds.

Use Cellphone Just For Talking

If you want to conserve your battery then its best to use the cellphone for what it was initially intended for and nothing else. This means that you should avoid playing games, using the built in camera feature, listening to music, instant messaging or surfing the web. Battery use is directly related to cpu use, so the more tasks you do with your cellphone the faster your battery will drain.

Reduce Volume Level

Another way to increase your cellphones batteries is by lowering down the volume for the ring tone and by turning of unnecessary sounds such as the button pressing clicks and key tones.

Turn Off Your Cellphone When Necessary

It is pointless to keep your cellphones on in situations that you know you will not be able to get a signal at such as on a plane, subway or in a library. Scared of missing a call, don’t. Many cellphone providers already have a system in place that would avoid you from missing a call. In this system, if a caller is not able to reach you then they are automatically forwarded to your voice mailbox where they can leave a voice mail for you to review later on.

Take Care Of Your Cellphones Battery

Battery are not very resistant to temperature changes, hence its vital you store your cellphone batteries in a place that is at room temperature and away from direct sunlight. If possible try to fully charge your batteries nightly at minimal once every three days. Over time the terminals on the battery may become oxidized, depending on the severity you may just need to clean the terminals with alcohol or need throw the battery altogether.

Over time cellphone batteries do begin to lose their charge capacity. This is due the general wear and tear and is to be expected. On average you can expect a modern cellphone battery to last for a couple of years before needing replacement.

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