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Anuncio de los artculos posteados el: 01/01/2001

Mayo042015

Does Wearing Headphones Increase the Amount of Bacteria in your Ears?

So, the short answer to your question is that anything you put in your ear will increase the bacteria levels present, simply by sheer dint of the introduction of a foreign object to your ear. You can consider this to also be true for cotton buds, earplugs and, of course, your index finger. Microorganisms tend to reproduce well in hot and humid environments and the ear, like the mouth and nose, certainly have all the right conditions for a germ-orgy of sorts (sorry for the image).


It has been said that using headphones increases the bacteria levels in your ears over 700 times.


To whatever degree this somewhat alarming statistic is true or false is, quite frankly, virtually impossible to determine. Put simply, there are just too many variables in the equation. Issues arise like ‘how many other people have used the headphones (are they shared devices like audio museum tours)?’ ‘How much bacteria is in the average person’s ear in the first place?’ or even ‘where are the headphones stored when not in use?’


All of these questions (and many, many more) would need satisfactory answers before we could start picking our way toward a definitive answer. According to our old friend Cecil Adams of www.straightdope.com, the ‘700 times’ factoid has its origins in a 1992 study in which experts measured bacteria found on 20 headsets of the type used by commercial airlines. According to Adams, the amount of microorganisms present on the ‘phones increased by 11 times, not 700 (as is often reported). A year later, the New York Times ran an article that is, according to Adams, the root of the old ‘700 times’ bit.




However, it should also be said that many different kinds of bacteria are vital to living organisms like us and, at any given time, there is an almost indescribably huge level of bacteria operating in your body. Yes, there is an increase in your in-ear bacteria if you use headphones, but it’s really not much different from the bacteria levels you encounter in your day-to-day life.


You may worry that this increase in bacteria can be damaging to your health (that is, after all, a reasonable concern). However, unless you suffer from regular ear infections, or any other easily aggravated ear-related ailments, the answer is a pretty definitive ‘no’.


Maybe if you dangle your headphones in the toilet before use, or get a flu-riddled relative to cough on them, you may have some trouble, but otherwise, the content of your ear is likely to be far more bacteria-friendly than the contents of your pockets (where the headphones are usually kept before use - if I’m any guide, that is).


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Avr252015

Meanwhile...Back In Outer Space

If you could see directly upwards from where you are now using some sort of cinematic super-eyesight, at about 20,000km above the Earth’s surface you’d find a network of man-made satellites orbiting our little blue planet like steadfast tin soldiers of a forgotten era. A vigil of artificial warriors like those found in the tomb of the first Qin Emperor.


These silent space sentries are constantly transmitting data from their memory banks as a way of helping lost travellers, just as the Buddha of compassion is said to guide weary journeymen/women to their destinations.




Here at best sat nav, we act as earthbound agents for these satellites by helping you, the traveller, find the right sat nav for the best price. At best sat nav, we’re mad about sat nav and we want you to be, too.


Trawling across the endless digital wastelands of the Internet for you, the diligent staff at best sat nav will compare all aspects of the market. best sat nav aims to be the best buyer’s guide on the Internet.


best sat nav is the coolest such site on the web. That’s a guarantee. At best sat nav, we’ll do the hard work, so all you have to do is move the mouse a bit. As the metal monoliths drift like uncharted continents above our heads, understand that here at best sat nav, we want to help you get home as quickly as possible.



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Avr182015

How does an aeroplane’s black box work?

After doing a little research, I can now tell you (basically) everything you ever wanted to know about black boxes...




In the average commercial aircraft, you’ll find the presence of multiple (usually four) microphones in the cockpit at any given time. They are located in the pilot and co-pilot’s headsets, as well as in the cockpit itself. Not only do these microphones record conversations between the pilots and cabin crew, they also record any ambient noise (such as switches being thrown or sounds generated by technical issues). The microphones all connect to the cockpit voice recorder (CVR), a master unit that stores the last 30 minutes of sound. The tape operates on a loop, essentially erasing itself every half hour.


This device is known colloquially, but a little misleadingly, as the black box (it is usually quite brightly coloured in order to make it easier to find in the unlikely event of an accident). Another device also referred to as a black box, is the flight data recorder (FDR), which automatically records data regarding the plane’s flight path, speed and movements in the air. Although the devices are distinct from one another, the information they record goes to the same place and is used for the same purpose, thus their shared name of black box.


In recent years, manufacturers have moved away from magnetic tape-based CVRs and FDRs and towards solid state technology boxes. These improved devices store the relevant data on memory boards, which can hold up to two hours of cockpit recording and 25 hours of flight data. The solid-state devices are also sturdier than their tape-based counterparts.




Crash survivable memory units (CMSUs), are large cylinders that back up all the relevant data and are designed to withstand extreme heat, pressure and violent impact. They are typically contained within the box itself. In the more severe accidents, the CMSU is all that survives of the black box.


The black box, then, simply records all the relevant data before an accident occurs. This serves to provide engineers with an explanation for a crash, as well as providing investigators and regulators with the same information.


So there you have it, of course, a lot of information is stored in an aircraft’s black box (much more than I’ve detailed here), but as a general example, that’s what it is and how it works. Hope that helps.


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Avr102015

Evaluation of the portable GP340 2 way radio

Recently we celebrated the 40th celebration for the world’s initial mobile phone communication. Inevitable, it was a Motorola employee who completed the historic phone call and, more unsurprisingly, the call was made on the Motorola phone (or, in this instance, prototype telephone). If you are taking one thing from this introductory piece, it ought to be this: Motorola are chief, and when it comes to communications.


With that in mind, I reviewed the GP340 Portable Radio, the standard in a long line of excellent Motorola radio devices. The following is what I thought about it.


THE SPECS


With up to eleven hours of battery, signal encryption and a selection of VHF or UHF bands, the GP340 hits the ground successively and goes from there. A well-built, slightly military-esque device gives the GP340 a professional appearance and facilitates for significant sturdiness across numerous environments.


At 137mm high, 57mm wide and weighing just 420 grams, the GP340 is also naturally moveable, which adds to the complete feel of this two way radio as an ‘action’ radio, possibly better matched than most 2 way radios to more involved use.


What is further, you get sixteen audio channels, as well as a ‘channel scan’ function.


There’s no screen to be found here, which is possibly a shame, but I disbelief this will influence the device in any major way, to be frank.


THE PRICE


Someplace between £230 and £280, depending on where you search. It pays to run a thorough web search at this point, because there looks to be quite a few offers going on at the moment.


THE PERFORMANCE


The GP340 is certainly more of a team walkie talkie, especially if that company happens to be posted a considerable distance away. To quote directly from the Motorola website,


“Streamlining operations with two way radio communication increases productivity and can outline part of an businesses health and safety structure that is particularly significant for individuals who work on their own or isolated from the squad”.


This is incredibly true, as the inclusion of a dazzling orange ‘emergency button’ as well as an ATEX-approved ‘mandown’ option board capably demonstrates Motorola’s commitment to user security. If you're a organisation owner and shopping to outfit a group (particularly one going into a probably dangerous situation) with 2 way radio units, you could do a lot worse than a set of Gp 340s.


In addition, the audible ‘low battery’ alerts are helpful and typically unobtrusive. On the other hand, if you use the changeable power level use, you can make the battery life survive that little longer and save yourself the sound.


The ‘Call Forward’ function is also an conclusive treat, allowing you to, in essence ‘leave a message’ for a user who is otherwise indisposed.


THE VERDICT


This looks like one more great 2 way radio from Motorola. The numerous, well-designed and considerate security features on this one are a real plus point, as is the universal durability and craftsmanship inherent to almost all Motorola 2 way radios.


The whole impression of this 2 way radio is one of carefulness and consideration. Workers can feel that their employer genuinely needs to keep them secure at all times and employers can recognize that their labor force are continuously contactable, especially in an crisis.


It lacks the crystal clarity and audio-level adjustment of the DP3400, but that’s about the only weakness I can discover with it. Even then, the signal is normally clear and passable. This premium level of presentation, along with a pail load of features to aid everything from user safety to battery life, is what makes the Motorola gp340 a real winner.

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Avr062015

A Personal experience of a doorman using an earpiece

Communication, as you all know is so vital in all aspects of our lives. In any security set up, whether you are protecting high profile personnel or you are carrying out a covert operation or even just working as a doorman, one thing has been clear to me; that communication between you and your team or your bosses is vital as well in ensuring that things run smoothly. However, communication may be interrupted depending on the working environment. Other days you may find yourself in rather noisy crowds. When this happens, it is important that you choose the right communication device and accessories that will make your work easier. An earpiece has been one of my favorite working gadgets for a very long time.


Why Do I like the doorman earpiece


Ever since I started using doorman earpiece, things have really been smooth for me and my work. An earpiece makes it practically simple to communicate and coordinate things between me and my colleagues together with my employers. Among the things that make these earpieces interesting and fun to work with include:


* They are en suite with excellent quality Kevlar cabling and strain relief that are long lasting which protects them from spoiling when pushed to the extreme.


* Doorman earpieces have excellent audio quality that easily neutralise any surrounding noise allowing an operative to hear everything said to them in a very clear and loud manner. In addition, most of them are fitted with microphones making it easier for a two way communication.


* They are compatible with a lot of gadgets and even more comforting is the fact they can easily be replaced at a very affordable price.


* Unlike many electronic gadgets, doorman earpiece is pretty easier to configure and use. It will interest you to know that no skill or knowledge is required to set it up and make it work.


What to look for when purchasing an earpiece


Technology keeps changing from time to time, and so are needs. As a doorman/bouncer, there are specific things you ought to look for when purchasing a doorman earpiece. These are features that are needs to be compatible, rather friendly with your working environment and your preference as a person. For instance, if your work is based in a noisy environment like say a club, you will need very fine audio quality sets that fit properly in your ear preventing any interruption from outside. In addition, you may consider the cords strength if you are working in a hostile environment where people keep getting in fights.


Compatibility is another important thing to look for in a earpiece. Note that there are earpieces that are compatible with nearly all types of gadgets while others are restricted to only specified gadgets. For flexibility be keen to purchase an earpiece is works with wide range of gadgets. Finally, the cost is equally as important. Contrary to what many people believe, expensive doesna€™t always mean better, the same way inexpensive doesna€™t necessarily mean something is of poor quality. Compare features and always go for one that looks a bit refined for a better experience.


Conclusion


It is clear that every one working in security should absolutely have a set of doorman earpieces. It is not only efficient, but also profoundly valuable to this line of work. Take your time, and determine what will work for and get the earpiece that will make your work easier.

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