Students Of Success

One of the bigger challenges facing display manufacturers is to develop a picture with the same warm characteristics as Cathode Ray Tube, but with far less weight and size.

The disadvantage of CRT, however is the size, weight and power consumption.
The focus has now shifted to flat panels.
Canon and Toshiba are about to introduce a new display technology called SED or Surface-conduction Electron-emitter Display.

The SED consists of layers of glass plates seperated by a vacuum. One plate is mounted with electron emitters, much like the electron gun in the CRT.
The number of emitters are equal to the number of pixels.
Another layer, is coated with a flourescent substance that reflects light at different wavelength, than the incident light.

When a voltage is applied, electrons are emitted from one side of a very narrow slit, and are scattered and accelerated by voltage applied on the other side of the slit, causing collision with the flourescent coated plated and light is emitted.
To the trained eye, a visible lag can be noticed when viewing LCD’s.

SED is similiar to CRT with the light emission theory, and the manufacturers claim the dynamic color can be expressed in sharp pictures and faster responses than LCD’s or plasmas.
Since no deflection of beam is required, screens of more than 40 inches and only centimetres thick can be created.
Power consumption is claimed to be one third that of PDP and LCD’s.

The introductory cost, at this point may be of some concern, however as with all new technologies, it can be expected to decrease as improvements are made.
We keep on the lookout.

Permission is granted to publish this article either
electronically or in print. Publication is granted free of
charge as long as the byline is included and the article is
published in its entirety.

Dale Davidson is the publisher of an on-line newsletter “the
eShopper on-line that provides free info, products and
services to on-line consumers.

With an extensive background in electronics, and membership
in the IEEE, ASME among others, the newsletter provides
regular info on from consumer electronics products.

Can be reached via email or visit website: the econsumershop .

Aside from the pricier spring mattresses, air mattresses are also gaining popularity. Other than being cheaper in comparison, air mattresses can also be used for other purposes than in-house sleeping like camping. An air mattress may look vaguely like a spring mattress, but looks are deceiving: the difference lies inside the mattresses. You feel it at bedtime when you lie in your bed. You could be tossing around trying to find that perfect spot, or you could be lying in your bed and finding the perfect spot at every turn.

Different from an air mattress, average spring mattresses have a support network formed by interconnected springs. These springs are made of solid metal with minimal flexibility. Springs are not capable of providing efficient support, only pressure and resistance, none of which are particularly comfortable. In the long run, these will sag, making an already bad bed, worse. It is also highly disconcerting to hear metal squeaks at ever turn you make. Spring mattresses are also prone to lumping, where the foam covering the springs get bunched up by the constant pushing and straining of the springs. The cartoon scenes in which the characters get thrown in the sky by loose bed springs are not purely fictional. These have factual basis. Though people who experienced this are not turned to specks of light in the sky, they do have nasty experiences getting poked or stabbed by the springs.

The difference between the two lie in their design. Air chambers are found in air mattresses’ core. This provides you with proper back support by ensuring the correct position and alignment of your spine and back. Plus, an air mattress is more flexible and supple than spring and foam mattresses, thus, it offers more adjustable levels of firmness. There are usually three support layers in an air mattress. A dense foam layer provides strong support as the mattress’ foundation. Two air chambers constructed to follow your shape are built over this foundation. Soft foam is built inside the fabric that surrounds the mattress as the last support layer. The layers are designed to produce a mattress capable of adapting to the shape of your physique in order to eliminate pressure and stress that can cause injuries and back pain. Air is evenly distributed to the whole mattress, and again, redistributed if you shift your weight or position; this makes air mattresses unequalled in support and comfort. For example, if you shifted to one side of an air mattress, the opposite side rise up in response to your movement. This means that the air inside the chambers reacted, and compressed the foam and air above for your hips, spine, and back to be in proper alignment, effectively reducing the necessity of turning and tossing.

Lastly, the choice between a spring mattress and an air mattress is just like choosing shoes. Choose the one that provides your body with the proper support to improve the quality of your sleep and your health. What you choose to use, reflect the care you extend to your body.

For more valuable information on air mattress please visit www.mattressair.net

If you’re planning a vacation you’ve probably already been offered travel insurance more than once. And if you’re like most people you quickly dismissed the idea and went about your business.

But don’t be so quick to decide. While travel insurance is not always a good idea, there are times when it can come in handy.

What is covered?

While coverage can vary from one carrier to another, travel insurance policies generally cover:

Trip cancellation or interruption due to weather, sickness, airline bankruptcy/strike, or terrorist activity.

Medical expenses incurred while in a foreign country. If you get sick while on African safari, you may find that your medical plan does not cover foreign care or that the coverage is severely limited.

Baggage and belongings that are lost, stolen, or damaged.

Accidental death and dismemberment if you are seriously or fatally injured while on vacation.

So when should I buy travel insurance?

Well, if you are going on a relatively inexpensive trip that is not likely to be canceled or delayed and you are young, healthy, and not planning on doing anything dangerous then you can probably skip it.

But if you are planning your honeymoon or a once in a lifetime trip, especially to a an area where weather is a concern, you should consider travel insurance. The small investment will be well worth it.

If you are elderly or in poor health you’re more likely to need medical attention while on vacation. Likewise if you are planning to take part in potentially dangerous activities such as rock-climbing or cliff diving.

Remember too that you don’t have to be doing anything risky to get hurt. You could be taking a lazy afternoon sightseeing drive and get hit by a reckless driver. If that happens, you’ll be glad you bought some extra insurance.

Mike Collins is the owner of www.thebeachesofaruba.com

Over-the-air (OTA) HDTV becomes more and more popular. For someone who is used to noisy analog TV pictures, it is hard to believe how amazing a quality of HDTV broadcasts can be. In fact, HDTV channels received over the air free of charge often have better quality than the same channels received through a paid satellite HDTV subscription. All you need to enjoy OTA HDTV is a HD television with a built-in HDTV tuner and an HDTV antenna.

Huh? Which kind of antenna?! If you have Ph.D in Electrical Engineering and have never heard about the antenna type called “HDTV antenna”, it’s not because you were a bad student. HDTV antenna has nothing to do with physics and engineering. It was invented in marketing departments. Marketing found an effective trick to boost TV antenna sales. HDTV is a hot thing these days. Call essentially the same device HDTV antenna, and it sells better. It makes people to believe they must buy an HDTV model or HDTV optimized antenna to watch HDTV broadcasts. This is very far from truth.

HDTV antenna hype created a huge misconception with regard to TV antennas used for HDTV reception. This article is an attempt to clarify this issue.

Do you know what a regular antenna is? Antenna is a piece of metal designed to resonate at a specific frequency and to be responsive over a certain range of frequencies. TV antennas are designed to work either in the range of Ultra High Frequencies (UHF), Very High Frequencies (VHF) or both. Any station transmitting in the VHF/UHF frequency bands, can be picked up by a VHF/UHF antenna and transferred to the TV set.

All television broadcasts, digital and analog, are in the VHF and UHF bands. Over 90% of the HDTV broadcasts are in the UHF, and less than 10% in the VHF band. What is important from the antenna perspective is that HDTV falls in the bandwidth of a regular VHF/UHF antenna. Not HDTV antenna, not HDTV optimized antenna, just a normal regular TV antenna. What makes a signal to be HD is its content, the way a signal is modulated, and not the carrier frequency it is transmitted on. On the contrary, the antenna knows nothing about the signal modulation and content. Hence, you don’t need an HDTV antenna to pick up the HD signal. An antenna has absolutely no idea what the signal resolution is. It can be HDTV, SDTV, NTSC, whatever. It is the job of a HDTV tuner and HD television set to demodulate the signal and to present the actual content on the screen.

Well, the antenna bandwidth and frequency response are not the only parameters that are important for clear TV reception. An antenna has other important electrical and spatial properties, such as antenna gain (directivity) and high front-to-back (F/B) ratio. One might assume that an HDTV antenna should be more powerful in terms of F/B and gain parameters. Does HDTV reception impose more stringent requirements on antenna gain and F/B ratio?

There is a wrong, yet widespread belief that you need more antenna gain to receive digital television. I don’t know where the hell this belief comes from, cause the situation is exactly the opposite. HDTV has much better noise and interference immunity than the analog television and can produce high quality video at significantly lower signal-to-noise ratios.

Another important specification, F/B ratio, has to do with the antenna ability to cope with a multi-path signal propagation from the towers to the receiving antenna. The higher F/B ratio is, the better is multi-path rejection (also known as ghost suppression). Without going into technical details, we must say that HDTV signal is a bit more sensitive to multi-path cause it has slightly larger bandwidth. Multi-path causes dips in the signal spectrum, whereas we want to keep the spectrum as flat as possible. When signal content is spread over a larger portion of spectrum it is more likely to be distorted by multi-path. Basically, what TV equipment manufacturers are trying to do in the so called HDTV optimization is to keep the spectrum flat in the whole frequency band. It is important for HDTV antenna to have a high F/B ratio in some areas where ghosts may be a problem. The point is, however, that most directional, old fashioned and cheap TV antennas have F/B ratio good enough to handle multi-path propagation of HDTV signal and keep spectrum distortion at minimum. If an antenna can handle an analog signal, it can handle a digital signal as well.

There is nothing specific about a TV antenna that is used to receive HDTV. When choosing an HDTV antenna, check the really important parameters such as directivity, gain, F/B ratio. These specifications are important for reception of both, digital and analog broadcasts. The HDTV optimization is probably the least important factor you should take into account.

HDTV Antenna Labs features step-by-step antenna selection guide and reviews.
For more information visit http://www.HDTvAntennaLabs.com/

Italy, a veritable treasure chest of culture and heritage - with its food, wine, culture and history, is always on the top of a European tour list. A tour to Italy would not be complete without going to Florence. This city is in the heart of Tuscany and is sometimes considered the birthplace of the Italian Renaissance. It is a place that is famous for its abundance of fine art and architecture and in the modern day, its fashion and leather goods.

If you are feeling a little tired out after a few days of sightseeing in Florence, a Florence hills tour can be a great way to relax and wind down. With a great ambience and an aura of solitude the hills of Florence are very popular and ideal for those who wish to take a break from the city.

If you only have a few hours to spare and don’t want to venture too far from Florence, then a trip to the town of Fiesole is highly recommended. Set amongst the hills, just 5 miles from Florence, Fiesole makes a pleasant half-day trip from Florence and provides a wonderful view of the city. You can get there by bus from the centre of Florence in around 20 minutes.

If you’re feeling more energetic or have a little more time to spare you can walk from the centre of Florence to Fiesole in around 2 hours. Once in Fiesole you can easily spend two or three hours wandering round, taking in the sights and the views of Florence and the valley below. Sights include a Roman Amphitheatre and baths dating from 1 BC, the Duomo and a few small museums.

If you have a full day to spare there are numerous tour companies that can organise day trips by bus, walking tours or biking trips. Alternatively you can hire a car and use a map to discover the delights of the Tuscan countryside for yourself.

A guided walking tour of the Florence hills will provide you with an insider’s view of Florence & Tuscany - you can discover the hidden treasures and learn of great legends and stories, giving you a more intimate experience of the region of Tuscany. A walk through the Florence hills is invigorating and you can soak up the beauty of the surroundings as you breathe in the fresh air and bask in the warm sun. You’ll also find plenty of photo opportunities as you pass by churches, castles, hill top towns and villages, olive trees and vineyards

If you’re reasonably fit and have cycling experience you may want to take a Florence Hills Tour by bike. There are many tour companies that offer guided biking expeditions of the area. With these tours you will cover more ground than the walking tours and you will see many of the different terrains and landscapes that the Florence hills have to offer. Be sure to find out as much information as possible about the cycling route before you go, as many tours of the Florence hills by bike can be arduous because of the steep climbs that you have to make.

If you want to make the most of the peace and quiet and spend a few more days enjoying the countryside you may want to book a stay in one of the many bed and breakfasts, hotels or villas in the Tuscan hills. Hiring a car will allow you to venture just that little bit further afield and visit some of the beautiful Tuscan hill towns such as San Gimignano, Colle Val D’Elsa and Monteriggioni.

Regardless of how much time you have to spend there, a trip to the hills surrounding Florence will give you a taste of the Tuscan countryside that will help to make your trip just that little bit more special.

Suzanne Morrison is a keen independent traveller and considers Florence one of her favourite European cities. Visit http://www.placestovisitinflorenceitaly.com to learn more about Florence and Tuscany

These days, speaking with most Democrats is like being “Alice, In Wonderland”. Most of them seem to be going under the old saying “Don’t Confuse Me With The Facts”, it seems that many of their statements are based on emotions instead of reality. I used to enjoy discussing politics, especially with people that disagreed with me (I felt that I might learn something new or different.). I still do, but lately I have found that, while I still enjoy discussing politics with Independents and Republicans, I no longer enjoy discussing politics with most Democrats. They almost all say the same things and they sound as if they are reading from a script.

Numerous Democrats that I have spoken with have stated, to paraphrase, “I don’t like Bush (They never say President Bush), he’s a thief and a liar and he is owned by the oil companies. He only cares about the rich. Nothing he says or does can be any good. Additionally, he is not smart enough to be President.”. The words they actually use are much worse, I just don’t wish to repeat them here.

The first thing that they all say is “Bush and his cronies stole the presidency from Vice-President Gore (They say President or Vice-President when speaking about President Clinton or Vice-President Gore.) in 2000.”. They say “Bush lied about Iraq having weapons of mass destruction.”. They say “Bush has ruined our economy”. They say “Bush was too slow in handling the Katrina disaster because he is prejudiced against blacks.” They say, “Bush has turned the world against us.”. Some are now even saying, “Bush knew that 9/11 was going to happen and did nothing to stop it so he would have an excuse for invading Iraq.”. When I ask them how they know these things they quote David Letterman, Jay Leno, Susan Sarandon, Alec Baldwin, Edward Kennedy, Nancy Pelosi, Howard Dean, Barbara Streisand and numerous other far left politicians, celebrities and newscasters.

I attempt to discover all sides of the issues so I watch NBC News, Fox News and CNN, I read the Los Angeles Times, the Wall Street Journal, Time Magazine, Forbes and other magazines and newspapers. When I ask my Democrat acquaintances if they watch Fox News, they all say “No, it’s too right wing.”. When I ask if they read the Wall Street Journal, Most say “No, it’s too biased.”, and even the ones that do admit to reading the Journal say, “I only read the financial pages.”. When I ask if they read or watch any conservative media at all, they say “No, all that you find in the conservative media are lies and cover ups.”.

When I try to counter some of their anti Bush statements with facts, they usually become upset and say “I don’t want to hear your facts, they are all lies spread by ‘big business’ and ‘right wing religious groups’, and even if they are true, I don’t care.”. “I don’t like Bush and that’s all that matters.”. When I ask them for proof of their allegations against President Bush, they usually either quote someone on the far left or say “Everyone knows it’s true.”. If I push them further they get upset and refuse to discuss the matter further. I have found that if you just listen to them and don’t disagree with them, they can talk forever about how bad President Bush and the Republican Party are. However, if you disagree with any part of anything they say, they will usually end the conversation immediately by changing the subject.

I don’t necessarily agree with, or even care for, everything that President Bush says or does, but the strident clamoring of the Democrats is forcing me to, more and more, side with him and the Republican Party. I am a Republican, but used to consider myself an Independent and voted my conscience rather than for a political party. Now, the blatant partisanship and lack of reason displayed by the Democratic Party has forced me to become an ardent Republican. The Republican Party, at least, still embraces some liberals and moderates. The Democratic Party appears to be trying to silence anyone who doesn’t agree with the far left.

David G. Hallstrom, Sr. is a retired private investigator and currently publishes several internet directories including www.resourcesforattorneys.com a legal and lifestyle resources directory for attorneys, lawyers and the internet public. For more lifestyle information see lifestyle.resourcesforattorneys.com, the Lifestyle directory from Resources For Attorneys.