SRH Aquatics World » electronics

Led Aquarium

Oscar — Fri, 28 Jan 2011 07:58:15 +0000

Account limit of 2000 requests per hour exceeded.

Led Aquarium

Install some trendy and glowing Fish aquarium lights

An aquarium is an important addition to your room and hence should be considered by all. The dazzling fishes not only add to the charm of the house or the room where it is kept by the smooth swirling movement in the water will surely make you fall in love with the beautiful creature. The fishes come in different colors and sizes and they indeed look beautiful and enhance the appearance of your house. The most important aspect of making your aquarium look good, apart from lovely fishes, is to install some trendy and glowing fish aquarium lights. This aspect of the aquarium beautification is often overlooked and hence it leaves most of the aquarium looking rather shoddy.

It is often observed that a most beginner often tend to ignore the issue of fish aquarium lights and so the whole concept looks so shoddy. There are many options that are available when it comes to fish aquarium lights. The best option is to indulge in prior research so as to gather sufficient amount of data and facts about the fish aquarium lights. Internet is the best place to indulge in research because it offers an array of data and facts which are helpful in proving useful info the fish aquarium enthusiasts. There are many options available and hence the best bet is to choose correctly otherwise there is every chance that you can be swindled as there are many wrong doers who look for opportunity for rob your money. There are indeed many types of aquarium lights available and the most popular among them are as follows;

1> The regular lights or the fluorescent lights as it is also known as are very popular. These are used by most aquarium owners.

2> The compact fluorescent is another important addition to the tally which helps to illuminate the fish aquarium and makes it look really good.

3> The fluorescent with high output is also an important product that is used by aquarium owners rampantly.

4> The metal halide lamps are also very effective and are very economical and take care of your purse to a larger extent. Many opt for these lights to brighten up their aquarium because it is cheap and provides effectiveness for money.

5> The LED bulbs are also commonly sold and are getting popular among masses. This is an important addition to the options as it is highly effective as it provides the much needed lights and it illuminates the aquarium making it look good. And the best part about the LED bulbs is that it is economical in the sense that it consumes less power and is highly cost effective. It is also helpful for the environment as it emits less of green house gas.

These are various options that are available to you and hence you can look to choose from them. The choice literally depends on your taste and preference. For people who are new to fish aquarium it must be said that all proper care must be taken to make sure that all the lights are properly installed. Fish aquarium lights are essential as they help to enhance the entire look of the aquarium interiors.

About the Author

Fisher is the author of this article on Freshwater Fish Tanks. Find more information about Fish Tanks For Beginners here.

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Light Bulb

Oscar — Mon, 27 Dec 2010 16:23:28 +0000

Account limit of 2000 requests per hour exceeded.

Light Bulb

A short history of the light bulb

The electric light bulb is one the most abiding symbols of technical advancement. From its early conception at the turn of the 19th century to the present day where the image of the light bulb is still used to represent the notion of a good idea, the design of the light bulb has changed relatively little. However, with efficiency requirements and customer tastes becoming more advanced lighting technology is once again changing rapidly. In this article I will chart the progress of the light bulb, starting with the earliest experiments with platinum filaments to today’s most advanced LED bulbs.

One of the most consistent and interesting themes in this subject area is the aversion to change that inventors and innovators contend with at each new technological advancement. This point can be illustrated with the candle light bulb; the bulb was designed to replicate the aesthetics of a candle in fittings such as chandeliers (the earliest chandeliers were purely functioning as a way of increasing the light output from candles). The candle shaped bulb is now one of the most popular CFL styles due to the potential cost savings from multiple bulb fittings.

When discussing the incandescent lamp one name features more prolifically than any other, Thomas Edison. Historians Robert Friedel and Paul Israel named over twenty inventors of the light bulb before Edison, however they concluded that Edison’s design surpassed earlier attempts because of effective incandescent material, a higher vacuum and higher resistance making the bulb easy to power and therefore economically viable.

Thomas Hughes ascribed the success of Edison’s design to the fact he had invented an entire lighting system, ‘other inventors with generators and incandescent lamps, and comparable ingenuity and excellence, have long been forgotten because their creators did not preside over their introduction in a system of lighting’ (Hughes).

The first incandescent light was created by Humphry Davy in 1802, 45 years before Edison was born, by passing an electric current through a thin strip of platinum, chosen for its high melting point. The light produced was not bright enough nor did it last long enough to be practical.

James Lindley took up the baton in 1835 demonstrating his electric light at a public meeting; however he then turned his attention to other fields leaving the way clear for Walter De la Rue. In 1840 De la Rue passed an electrical current through a coiled platinum filament- enclosed in a vacuum. The theory being that an evacuated bulb would contain fewer gas molecules to react with the platinum, thus prolonging its illumination time. This was a significant advancement; however the use of platinum made the design unfeasible for commercial use.

In 1858 Joseph Wilson Swan began working with carbonised paper filaments but was hindered by the lack of a good vacuum until he teamed up with Charles Stearn, an expert on vacuum pumps. Swan then turned his attention to efficiency, producing better carbon filaments, and in 1880 he began installing light bulbs in his home in Gateshead, England.

Thomas Edison began research into the incandescent lamp in 1878, settling on the carbon filament. His first test in 1879 lasted for 13.5 hours, however several months later Edison discovered that a carbonised bamboo filament could last for over 1200 hours.

Meanwhile in the U.S Hiram S. Maxim started his United States Electric Lighting Company becoming the second man, after Edison, to install incandescent lamps at the Mercantile Safe Deposit Company in New York City. Edison and Swan joined forces to form Ediswan (later to become Thorn lighting), and eventually Edison acquired all of Swan’s interests in the company.

Advancements continued and in 1910 William David Coolidge invented a method of making tungsten filaments more efficient, making the light bulb even more cost effective.

From 1913 to 1930 innovators turned their attentions to the use of inert gases in the bulb to improve efficiency further. In 1930, Imre Brody settled on a mix of krypton and xenon and to reduce costs, also developed a method of capturing krypton from air at his factory in Ajka, Hungary.

The latest significant development in the lighting sector has been the introduction of ‘energy saving’ light bulbs or compact florescent light bulbs (CFLs). Although they are considered a relatively modern invention CFLs were first conceived by Pete Cooper in the late 1980s and were originally used in the photography industry. The first practical florescent lamp was designed by George Inman from General Electric and became the blueprint for the modern CFL invented by Ed Hammer and General Electric in response to the 1973 oil crisis. Although the design met all of its requirements, it was never mass manufactured due to the cost of mass production, however the design was subsequently leaked and copied.

The steady increase in CFL production continues to this day but with the phasing out of inefficient incandescent bulbs, consumption is expected to increase more sharply. By September 2012 no incandescent bulbs will be available reducing carbon emissions and consumer energy costs.

So what is the future of electric lighting? Many people believe that the answer lies with LED bulbs. Originally used in devices such as alpha numerical displays and pocket calculators the LEDs have recently seen successful application in commercial and domestic lighting. LEDs can last for up to 50,000 times as long as incandescent bulbs and the most advanced bulbs can produce a high light output while consuming a fraction of the energy. Although the initial cost of the lighting is high, the bulbs will more than pay for themselves in their lifetime. LED bulbs have a fast on/off time and can withstand a high frequency of cycling making them ideal for car headlights, theatrical spotlights, traffic lights and dynamic road signs as well as household and domestic lighting.

It is clear that lighting technology has come a long way since Edison’s first experiments and the contact we have with lighting everyday encourages advancements to continue.

Please visit Greenhouse Organisation for all your energy saving light bulbs.

About the Author

Greenhouse Organisation is a web-based business selling Energy Saving Light Bulbs. We stock traditional bulbs for all your household light fittings including candle bulbs, dimmable bulbs, spotlights, and the latest LED lamps. Use our Energy Saving Calculator to see how much you can slash your energy bills by. We ship Energy Efficient Light Bulbs across the UK.

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Year Warranty

Oscar — Fri, 05 Nov 2010 11:38:38 +0000

Account limit of 2000 requests per hour exceeded.

Year Warranty

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White Led

Oscar — Sat, 07 Aug 2010 21:15:14 +0000

Account limit of 2000 requests per hour exceeded.

White Led

LED Lighting - Enlightening the World

Light Emitting Diode, which is conveniently called as LED lights in electronic term is a semi conductor light that emits light as soon as an electric current is applied to it. They are extensively used as indicator lights on electronic devices and also in higher power applications as in case of flashlights and area lighting. As per the technological methodology, an LED is a light source which can be infrared, visible or ultra violet. The color is determined by the composition and condition of the semi conducting material used. Discovered in the year 1907 by H.J Round, a British experimenter, earlier these bulbs were used as replacements for incandescent indicators only.

Methodology

The white color of the LED bulbs come from a narrow band blue that is emitted naturally by GaN LEDs. The yellow on the other hand is generated by a phosphor coating on the die which absorbs a proportion of the blue and converts it to yellow. These GaN die are able to produce operational wavelengths from green to ultraviolet by varying the relative amounts of indium and gallium during production. When electric applied in the forward direction of the device it results in a form of electro luminescence where incoherent and narrow-spectrum light is discharged from the p-n junction in a solid state material.

Advantages

LED technology has taken the world to a whooping stage of development as it is very useful in conservation of energy and pollution. Some of the important advantages of the bulb are -

1. LED lights are more efficient when compared to the conventional bulbs and tube lights. They produce more light per watt against an incandescent bulb and this facet makes it very useful when used in battery powered or energy-saving devices.

2. This technology has the capacity of emitting various colors of light without the use of colors filters that traditional lighting methods require, thus saving initial costs.

3. Due to their small size, they can be easily placed and they also light up very quickly and achieve full brightness in microseconds.

4. These LED light have a better cycling life as compare to incandescent bulbs and also radiate much less heat in the process of switching on and off.

5. They have a better life span around 35,000 to 50,000 hours of useful life and LEDs mostly fail by dimming over time, rather than the abrupt burn-out of incandescent bulbs as in comparison to incandescent lights.

6. These lights are shock resistant and the solid package of the LED can be designed to focus its light. The fact that they are non toxic (do not contain mercury) also favors the application of these bulbs.

Disadvantages

However, withstanding all the advantages, there are certain short comings faced by these LED lights as well. they are listed below -

1. As compared to incandescent bulbs the LEDs are much more expensive and its execution largely depends on the ambient temperature of the operating environment. They require adequate heat sinking in order to make it more durable.

2. These LEDs are also voltage sensitive and one needs to be vigilant as they involve series of resistors or current-regulated power supplies. As they work on the mechanism of area light source, it becomes difficult for them to operate in spherical light field.

3. Of recent it is being observed by the scientists that blue and cool white LEDs emit blue light hazard that is unsafe for eyes. The cool white LED lights should not be used for outdoor lighting near astronomical observatories. Together these lights have certain limitations that are termed as blue pollution.

Applications

LED lights are perhaps the most advanced technology that is taking its tool over the people all over the world. Their application is diverse and hence they can be divided in three distinct categories - Visual signal application where the lights transpires from the bulb to the human eyes directly, Illuminations where LED light is reflected from an object to give visual response and finally, technological approach that does not require the contact with human visual system as in case of light photosynthesis in plants.

Products and Evolution

In the past decade, LED technology has expanded its scope to almost every household in the world. From little red spots that tells one that the wi fi connection is on, to the excellent light source that we see in our rooms just by switching on a plug, applications of LED is ubiquitous. Production quality LEDs are now capable of efficiencies of around 70 lm/W, compared with 12 lm/W for incandescent light bulbs, and single die devices are producing over 100 lm.

Today one can find the implication of these LED lights in many areas. Be it the LCD screen of the computers or the latest version of the mobile phones, be it Ipods or safety and security hardware like LED enabled drainage system or Led micro lights for reading at nights, LED technology is vast and growing by leaps and bounds. The newest trend in the electronic market is the green influence that has not left the LED world bereft. The most recent launches in the LED market are theLight bulbs that can help one save up to 90% of electricity costs plus reduce the heat output and even more than this the bulbs claim to last up to 10 times longer than a standard Light Bulb or compact florescent. Some of the most advanced LED enabled products in the electronic world are -

LED enabled Faucet Lights - Install this in your homes to give a new look to the monotonous water taps. Available in red and blue they are heat sensitive and alarm the user by changing colors, as soon as the water temperature goes above 89 degrees centigrade.

LED Jellyfish Mood Lamps - These are unique desktop tank that plays trick with the eyes by displaying three jellyfish that swim, with the aid of the 6 bright colorful LEDS that are placed at the top of the tank.

Sony's Walkman - Sony, the largest supplier of electronic goods has launched a new Walkman called NWZ-X1000 that features an OLED (Organic light emitting diode) touchscreen.

About the Author

I am a product analyst for b2b industry. My core profile is to understand industry, develop information architecture and plan the product. Developed many B2b verticals. My core interest is research and analyse industry trends, latest updates in market, industry product information. Based on my experience i have studied harwdare product industry and my interest is to share that information and develop network for harwdare industry so that business manufaturers, suppliers, traders can benefit from this resource.

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Lcd Thermometer

Oscar — Thu, 03 Jun 2010 12:16:32 +0000

Lcd Thermometer

Account limit of 2000 requests per hour exceeded.

Lightweight Television Comparison

In the past, televisions have been heavy and bulky because a regular cathode ray tube (CTR) TV needed the extra room to enable the visible screen and its scanning picture process the room to work. Today we have the convenience of having magnificent color as well as a lightweight television. These lightweight colorful televisions are Plasma, LCD and DLP TV's.

1) How Plasma, LCD and DLP work

Plasma - Florescent light is the sustaining component of a Plasma TV. Florescent is a matter of gas. Launching electrons into the florescent gas causes the electrons to react quickly. The electrons slam into the atoms, it is much like watching a pinball game in action.

In plasma connected to electricity the negative and positive particles are running at each other. While they are running at each other, they are of course bumping into each other. While striking against each other they display an illustrious intensity of ultraviolet light. This is then displayed upon a screen by several layers of glass with contained gas cells and electrode grids.

LCD - Liquid Crystal Diode - Liquid Crystal is one of those amazing things that are in a state of being more than one matter. Liquid Crystal is multi mattered, just as we are. People are solid, liquid and gaseous, yet we are neither. Therefore, it should not be so hard to understand that LCD is multi mattered.

A heat process that by nature transforms liquid crystal into another aspect of itself that is heat changes the Liquid Crystal into a more liquid than solid matter. As a result, anything made of LCD is temperature sensitive. For instance, a computer monitor or thermometers reaction to hot and cold, as people do shiver and swelter. Liquid crystal is used for many things because of its nature when introduced to polymers, such as bulletproof vests and sails for boats.

With the use of electricity, LCD is able to cast a picture by distributing the crystal-clear sequence or design of blocked light molecules. This in turn manipulates light intensity of its pixels that forms upon the colorful screen face.

DLP - Digital Light Processing

Digital light processing uses technology that is based on optical semiconductors. This digital micro mirror device uses tilting mirrors of aluminum, which uses reflected light and a color filter wheel, to create a picture. The mirrors are laid out in a matrix pattern and each mirror equals one pixel. It is like looking at a photo where each piece displays a small square shaped light reflection. The further away you are from the TV screen the more the picture appears to blend together.

The reflected light is directed through a lens and then onto the TV screens producing the images we see.

DLP TV's are not prone to phosphor burn in, nor are they vulnerable to pixilation where the find lines of the pixels separate.

Current DLP TV's are now made slimmer and more lightweight than in the recent past.

DLP technology is used in many ways besides TV screens, which range from business projectors, video walls and home theaters with more experiments in future uses. DLP is also used for commercial entertainment applications and projection systems used for large group viewing.

About the Author

David Tanguay is dedicated in providing research, reviews & helpful information to consumers and businesses. To research, review and purchase your next TV, please visit Flat Panel TV Reviews at http://plasmatv-compare.com

Digital Compact LCD Thermometer with Outdoors Remote Sensor

LCD Digital Thermometer Aquarium Freezer Refrigerator Probe Sensor 1 Meter
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New Black TM 3 Digital Submersible Fish Tank Water Aquarium LCD Thermometer S
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New Digital LCD Thermometer for Aquarium Freezer H155
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New Yellow TM 3 Digital Submersible Fish Tank Water Aquarium LCD Thermometer S
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Digital LCD Submersible Thermometer for Fish Tank USA
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Convenient Use Fish Tank Aquarium Submersible Hydrometer LCD Digital Thermometer
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