Humidifiers: Air moisture eases skin, breathing symptoms

Humidifiers can ease problems caused by dry air. But they need regular maintenance. Here are tips to ensure your humidifier doesn’t become a household health hazard.

Dry sinuses, bloody noses and cracked lips — humidifiers can help soothe these familiar problems caused by dry indoor air. Humidifiers can also help ease symptoms of a cold or another respiratory condition.

But be cautious: Although useful, humidifiers can actually make you sick if they aren’t maintained properly or if humidity levels stay too high. If you use humidifiers, be sure to monitor humidity levels and keep your humidifier clean. Dirty humidifiers can breed mold or bacteria. If you have allergies or asthma, talk to your doctor before using a humidifier.

What are humidifiers?

Humidifiers are devices that emit water vapor or steam to increase moisture levels in the air (humidity). There are several types:

  • Central humidifiers are built into home heating and air conditioning systems and are designed to humidify the whole house.
  • Ultrasonic humidifiers produce a cool mist with ultrasonic vibration.
  • Impeller humidifiers produce a cool mist with a rotating disk.
  • Evaporators use a fan to blow air through a wet wick, filter or belt.
  • Steam vaporizers use electricity to create steam that cools before leaving the machine. Avoid this type of humidifier if you have children; hot water inside this type of humidifier may cause burns if spilled.

Ideal humidity levels

Humidity is the amount of water vapor in the air. The amount of humidity varies depending on the season, weather and where you live. Generally, humidity levels are higher in the summer and lower during winter months. Ideally, humidity in your home should be between 30 and 50 percent. Humidity that’s too low or too high can cause problems.

  • Low humidity can cause dry skin, irritate your nasal passages and throat, and make your eyes itchy.
  • High humidity can make your home feel stuffy and can cause condensation on walls, floors and other surfaces that triggers the growth of harmful bacteria, dust mites and molds. These allergens can cause respiratory problems and trigger allergy and asthma flare-ups.

How to measure humidity

The best way to test humidity levels in your house is with a hygrometer. This device, which looks like a thermometer, measures the amount of moisture in the air. Hygrometers can be purchased at hardware stores and department stores. When buying a humidifier, consider purchasing one with a built-in hygrometer (humidistat) that maintains humidity within a healthy range.

Humidifiers, asthma and allergies

If you or your child has asthma or allergies, talk to your doctor before using a humidifier. Increased humidity may ease breathing in children and adults who have asthma or allergies, especially during a respiratory infection such as a cold. But dirty mist or increased growth of allergens caused by high humidity can trigger or worsen asthma and allergy symptoms.

When the air’s too damp: Dehumidifiers and air conditioners

Just as air that’s dry can be a problem, so can air that’s too moist. When humidity gets too high — common during summer months — it’s a good idea to take steps to reduce indoor moisture. There are two ways to reduce humidity:

  • Use an air conditioner. Central or window-mounted air conditioning units dry the air, keeping indoor humidity at a comfortable and healthy level.
  • Use a dehumidifier. These devices collect excess moisture from the air, lowering humidity levels. Dehumidifiers work like air conditioners, without the “cooling” effect. They’re often used to help dry out damp basements.

Keep it clean: Dirty humidifiers and health problems

Dirty reservoirs and filters in humidifiers can quickly breed bacteria and mold. Dirty humidifiers can be especially problematic for people with asthma and allergies, but even in healthy people humidifiers have the potential to trigger flu-like symptoms or even lung infections when the contaminated mist or steam is released into the air. Steam vaporizers or evaporators may be less likely to release airborne allergens than may cool-mist humidifiers.

Tips for keeping your humidifier clean

To keep humidifiers free of harmful mold, fungi and bacteria, follow the guidelines recommended by the manufacturer. These tips for portable humidifiers also can help:

  • Use distilled or demineralized water. Tap water contains minerals that can create deposits inside your humidifier that promote bacterial growth. And, when released into the air, these minerals often appear as white dust on your furniture. You may also breathe in some minerals that are dispersed into the air. Distilled or demineralized water has a much lower mineral content compared with tap water. In addition, use demineralization cartridges or filters if recommended by the manufacturer.
  • Change humidifier water often. Don’t allow film or deposits to develop inside your humidifiers. Empty the tanks, dry the inside surfaces and refill with clean water every day if possible, especially if using cool mist or ultrasonic humidifiers. Unplug the unit first.
  • Clean humidifiers every three days. Unplug the humidifier before you clean it. Remove any mineral deposits or film from the tank or other parts of the humidifier with a 3 percent hydrogen peroxide solution, which is available at pharmacies. Some manufacturers recommend using chlorine bleach or other disinfectants.
  • Always rinse the tank after cleaning to keep harmful chemicals from becoming airborne — and then inhaled.
  • Change humidifier filters regularly. If the humidifier has a filter, change it at least as often as the manufacturer recommends — and more often if it’s dirty. Also regularly change the filter in your central air conditioning and heating system.
  • Keep the area around humidifiers dry. If the area around a humidifier becomes damp or wet — including windows, carpeting, drapes or tablecloths — turn the humidifier down or reduce how frequently you use it.
  • Prepare humidifiers for storage. Drain and clean humidifiers before storing them. And then clean them again when you take them out of storage for use. Throw away all used cartridges, cassettes or filters.
  • Follow instructions for central humidifiers. If you have a humidifier built into your central heating and cooling system, read the instruction manual or ask your heating and cooling specialist about proper maintenance.
  • Consider replacing old humidifiers. Over time, humidifiers can build up deposits that are difficult or impossible to remove and encourage growth of bacteria.

read more: http://www.mayoclinic.com/health/humidifiers/HQ00076

Whats the Difference Between Active and Passive 3D TV Glasses?

        One of the first questions viewers ask when thinking about 3 D TV is “What is the difference between active 3 D glasses and passive 3 D glasses?” After all, it is the glasses that make it possible for the viewer to actually see the 3D image produced by the high-end home theater system. They can also be a major factor in the cost, as every viewer needs a pair of 3D glasses, which can add up, particularly for those with large households. The basic answer is that the active glasses do more to produce the 3D effect for the viewer while passive glasses simply work because of what they are rather than what they do. The most important thing to remember is that the two kinds of glasses work with radically different 3D implementations, and it is very important to make sure the glasses match the technology of the television.

How Do 3D TVs Work?

In order to choose between 3D glasses, it is important to understand how they work, and it is impossible to fully understand how the glasses work without understanding the basics of 3D. Humans perceive objects in three dimensions because the human brain synthesizes a single image out of two disparate ones. This works because the human vision system is based around the eyes, which are both not in the exact same place on the head, so no object is perceived at exactly the same distance with both eyes, making it easier for the brain to place them in a 3D space. This also makes it possible to judge relative distance between objects. Unfortunately, it is very difficult to reproduce this when viewing images on a screen, as every component of the image is the same distance from the viewer’s eye.

Basics of 3D TV

Just as the human eye perceives three dimensions due to the differences in perception from one eye to the other, 3D TV and 3D movies, attempt to create the illusion of three dimensions by providing different images to each eye. While the methods may change, every system designed to create 3D images from a two-dimensional display is based around this same principle. This was how the red and blue glasses of the 1950s worked, and it is how both active and passive 3D TVs work.

How Passive 3D TV Works

Passive 3D TV works exactly the same way that 3D works in the movies, using polarized lenses to provide different images to each eye. With a passive system, the TV screen is coated so that light from alternate scan lines is polarized differently. The TV then interlaces two images on the screen, one for each eye. Meanwhile, the polarization in the lenses, which matches the coating on the screen, ensures that the proper image is delivered to each eye. It is a simple and elegant system that relies on basic optics. Passive 3D is currently only used on some LCD TV and LED LCD TV models, and it is not available on plasma TVs. Due to the fact that it requires a screen coating, it may never be available for projectors.

How Active 3D TV Works

Active 3D TV uses a much more complex system to achieve the same goals. Rather than interleaving two half-resolution images in space, it interleaves two full resolution images in time. The TV rapidly alternates showing images for the left and right eye, while the glasses use electronic shutters synchronized to the TV to ensure that each eye sees a different image. This system is more complex but allows for a higher resolution 3D image. The only real technological requirement for the TV is that it be able to refresh the screen quickly enough to supply images for both eyes. Another thing to consider is that active 3D is the only form available on projection and plasma TVs, as well as LCD and LED LCD models. Regardless of the technology the viewer prefers, there is probably an active 3D TV available for their needs.

Comparing Active and Passive 3D Glasses

ainSonic 3D Rechargeable Active Shutter Glasses

SainSonic 3D Rechargeable Active Shutter Glasses For Sharp LC-60LE847U TV

One thing that should be noted before comparing active and passive 3D glasses is that the choice of which glasses to buy is as much about choosing which 3D TV implementation as it is about the glasses themselves. The following table provides a handy feature comparison for the two different types of 3D glasses.

Feature

Active

Passive

Weight Heavy, glasses have to contain both the shutter mechanism and battery. Light, thin plastic lenses and frames are the only components required.
Image Quality Very good, provides full resolution high-definition image. However, some viewers may notice flickering due to the shutter mechanism, which may also lead to headaches. Lower effective frame rate can also lead to jerkiness in the image during fast pans and other movement. Average, provides half-resolution high-definition image. This means that depending on where the viewer is sitting, they may see either black lines on the screen like some old video games, or noticeable jaggedness. This can be minimized either through the use of a smaller screen or by sitting farther away from the screen.
Price High, active glasses are complex electronic devices with wireless communication abilities. May be cost prohibitive if many pairs are needed for a big family. Low, passive glasses have no moving parts or electronics.
Ease of Use Average, active glasses require connection and synchronization before use. Easy, passive glasses only require wearing. No need for connection or synchronization.
Compatibility Low, the majority of glasses only work with TVs from the same manufacturer. There is a plan for a universal active 3D glasses standard but not all TVs may follow it. High, passive 3D glasses use the same system found in movie theaters. It is a common standard, and all modern passive 3D glasses are compatible with all TV sets that use the system.
Availability High, active 3D can be used with any TV technology, including both projection and plasma as well as LCD. Average, passive 3D only works with LCD-based TVs. It specifically does not work with projection or plasma TVs.
Brightness Average, the shutter mechanism in active 3D glasses causes a measurable reduction in light transmission, producing a dimmer image. This is particularly noticeable when watching in brightly lit conditions. Good, the polarizing filters in passive 3D glasses have a minimal effect on the transmission of light. While they do cut out some light, images do appear brighter than when using an active 3D system.

Both active and passive 3D glasses have advantages and disadvantages in both casual and regular use. Passive glasses require less set up but work with fewer technologies, while active glasses provide a crisper image at the cost of brightness and possible flickering.

Conclusion

The biggest difference between active and passive 3D glasses is that active glasses use power and passive ones do not. Each technology has its advantages and disadvantages, and neither is a perfect solution for all users. Passive 3D glasses are lighter weight and more suitable for extended viewing; they are also easier to use: simply put them on and start watching. Active 3D glasses provide a higher quality image without the jagged lines associated with passive 3D glasses. They also require synchronization with the TV and sufficient power for the entire viewing session. Passive 3D glasses require that the TV have a special coating on the screen that is only available on LCD and LED LCD TVs, while active 3D glasses can work with both projection and plasma TVs as well as the LCD variants. Consumers wishing the absolute highest quality 3D image and those who wish to use a TV other than an LCD-based 3D TV should choose a solution using active 3D glasses. Those looking for a solution that is less expensive and easier to implement may be better off with passive 3D glasses.

read more:http://www.ebay.com/gds/Whats-the-Difference-Between-Active-and-Passive-3D-TV-Glasses-/10000000177630831/g.html

3D Printed Shoes Feature iPhone Holster

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3D Printed Shoes by designer Alan Nguyen, and exhibited at the Milan Design Week in 2012 and the Maison et Objet show in Paris, again in 2012. The shoes were commissioned by Freedom of Creation for FreshFiber, a company that makes “personalized 3D accessories.” This 3D Printed Mashup Shoe celebrates a collection of the most successful iPhone cases from FreshFiber. This 3D printed mash up shoe holds your iPhone on the side, cool?

Aroma Diffuser Air Humidifier—make your room better

SainSonic LM-001BM Ultrasonic 100ML LED Aroma Diffuser Air Humidifier

Features:

100ml water capacity that can continue use up to 3 hours each time; Colorful changing LED lamp, romantic and convenient
Aromatherapy: Enjoy the ultimate aromatherapy experience from this little sleek device using your favorite fragrance without any heating elements making this diffuser safe to use. The advanced ultrasonic technology used, produces vibrations at high frequency turning the water into mist creating a soothing and therapeutic atmosphere
Humidifier: Moisturizes and refreshes the quality of air we breathe. This feature is important as it humidifies the hot and dry air in the room during summer and winter when heating is switched on
Application: Beauty salon, SPA, Yoga, Bedroom, Living room, Conference room, Office, Reception center, Corridor, Pet room, Toilet, baby room, Hotel, Hospital or any other private / public circumstance

Usage: The cool mist air filter humidifier improves the atmosphere of any room you place it in. This electric aroma diffuser is very comfortable and can be considered as a mist humidifier.

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bendier phone concepts

Young Sohn, a senior executive from Sumsung, unveiled a lighter and bendier phone concept on Tuesday in San Francisco. “We think the health area is a really key area of innovation,” said Sohn. The concept shows off future of wearables and phone displays. Its wearable sensors that allow you to monitor your health stats on the go and send the results directly to a doctor.

Samsung-s-bendier-phone-concepts

Wooden Watches

maybe you have seen watches made by metal and plastics, but what about wood.

Beautiful watches crafted out of wood by talented Ukrainian artist, carpenter, and watchmaker Valerii Danevych.

Functional wristwatches made of wood take hundreds of hours to complete.

The body, strap, gears, and internal parts are all handcrafted out of wood.

Each creation is a work of art. Valerii Danevych also makes unique clocks, beautiful timepieces, and wooden pocket watches.

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