The London Olympics are certainly on the tip of nearly everyone’s tongue (and Courtesy of FrenchArt-Deco.com

This piece, entitled “Swimming Pool” by French artist Albert Decaris won gold in the Engravings and Etchings competition.

In 1949, the International Olympic Committee decided to stop all art competitions, reasoning that it was illogical to let professional artists compete, while only amateur athletes were eligible. Instead, cultural festivals replaced the art competitions, and still do to this day. There’s still a chance for the best of the best artists and entertainers to showcase their stuff on an international stage, and for lighting designers, this is certainly a world class exhibition. 

LED is the light source that’s in it to win it this summer, wowing Olympic fans with spectacular light shows and festive monuments alike.

At the opening ceremony, LEDs were at the center of almost everything. The dove bikes used LEDs to light up their wings as they performed a circuit of the stadium.

LEDs lit the screen showing the Queen’s acting debut, with none other than James Bond.

Even on the sidewalk outside the main Olympic Stadium, there are 20 circular slabs that capture the kinetic energy of pedestrians’ footsteps to light up nearby LED lamps for 30 seconds at a time!

Almost everything nowadays operates on electricity. The modern conveniences that drive our world depend on electricity. Without a constant supply, our world grinds to a halt, as massive blackouts have proven in the past. Electricity has two forms in modern electronics: AC and DC.

AC (alternating current), is most frequently used in devices that require high amounts of power to operate.

DC (direct current), is more commonly found in devices requiring smaller amounts of power to operate.

DC was the original electricity that was created by Thomas Edison. This style of electricity sends a current in only a single direction, from a power source and to the power source again in a loop. Today, DC is used to power electronics that require batteries. Any device in your home that uses batteries uses DC current. Interesting to note, if your battery is plugged into the power supply to recharge, it transforms AC current into DC.

Direct current is also used in manufacturing situations where electricity is generated on site for personal use. Factories and mills that require vast amounts of energy often create their own DC current to power their machinery. Most commonly, DC is found in steel mills, aluminum production, and is used to power mass transportation in large urban centers in the form of electric streetcars.

AC power is easier to generate, which is why we use it as our standard electricity nowadays. The alternating current design allows energy to flow in both directions, making electricity easier to create and use in society. Regardless of where the current is moving, it is always moving in both directions at once. This results in current being present at every point in the power grid at every time as long as the connection to the generation unit is intact. The power that comes from the power plants, down the lines to our homes, is always AC in nature, thanks to the way our modern power grid is set up.

The power grid operates by creating AC current and sending it down the power lines. This current can be at whatever intensity the power company chooses.

Frequently, the electricity coming from these lines is far too powerful to be used in our homes. The transformers that we see on power poles transform the electricity from its high-powered state into something that our homes can use. Without the transformers, we wouldn’t be able to use the power that our society depends on.

Regardless of the style that we use in our devices and our homes, electricity plays an important role in society. Without both AC and DC electricity, we wouldn’t have those things that make modern life as comfortable as it is.

Do you own electrical equipment that is overheating? If you’ve noticed any of your electrical devices, like a toaster or a radio, overheating you may have a serious electrical problem on your hands. Fortunately, at Kolb Electric, we have just the tools to diagnose and fix the problem.

Overheating of electrical devices can be caused by a number of problems. From faulty wiring to an outdated electrical system, it’s important to get to the bottom of an overheating electrical device.

At Kolb Electric, we offer thermographic inspections for your home or business. A thermographic electrical inspection will test the equipment’s temperature against the temperature of surrounding components. Significant variations in temperature indicate electrical problems in your appliances and equipment. Temperature abnormalities are often due to defective or failing components. By catching problems early on, they can be corrected before they can cause even greater damage later.

If you manage a home-based business that relies on several pieces of electrical equipment, it is especially important that you routinely schedule thermographic electrical inspections in MD, VA, or DC in order to prevent your important equipment from malfunctioning.

A thermographic inspection is completely non-contact and safe to perform on energized electrical systems. Thermographic electrical inspections can be conducted while your equipment is still in operation, which means you won’t lose time by having to shut down your equipment.

When combined with traditional home inspection techniques, the infrared thermography inspection method reveals considerably more about your house than can be seen with conventional inspection tools. Some things our infrared thermography inspections have detected include:

Water leaks: using an infrared camera to scan the inside of your home can reveal moisture leakage around plumbing systems, the roof, any windows, etc. We’ll be able to see them because areas with more moisture will appear darker than surrounding warmer, dry areas.

Insulation deficiencies: our scanners will reveal large temperature differences within your home where insulation is deficient or absent.

Roof leaks: we’ll be able to spot water and moisture intrusion and accumulation below the surface of your roof, which can help you pinpoint leaks and lessen their effects before they do major damage to your home.

Electrical system problems: one of the best things about an infrared thermography scan is that it helps you see any deficiencies in your electrical system, including loose connections that could cause certain appliances to run inefficiently (or to not run at all).

Structural issues: finally, infrared thermography scans will help locate structural issues within your home, including poor heat transfer, bad conductivity, and more. We may even be able to detect missing or damaged structural components.

For all your infrared thermography needs in Maryland, Virginia, and Washington, DC, contact the electricians at Kolb Electric today—877-287-1179877-287-1179 or click here!

The jargon in the lighting world can often get mixed up. Color rending index (CRI) and color temperature are one of the most to be confused with each other. This post is going to clarify what the different between CRI and Color Temperature is so we can end this confusion.

Here is a short explanation why the CRI is more important to focus on before deciding for a color temperature. The color rendering index is the most important feature in certain applications as it determines the appearance of objects, faces and spaces. If this aspect is not relevant, the CRI can be as low as 60 or even 40.

The color rendering index (CRI) is a numeric evaluation of the light color accuracy with the reference of daylight (numbered 100). Sunlight and its broad spectrum will enable a person with normal vision to see 68 different colors in a color chart, but if the chart is illuminated by a light source of one wavelength only, each color from the color chart will appear as a different brightness of that one color. Some activities, such as walking or operating a vehicle, do not require the accurate perception of surface colors while others such as product selections in shops benefit from better color rendering features. Look at the application of the lighting installation. If the visual tasks are easy to perform the CRI doesn’t need to be high. In areas like offices, handcraft manufacturing and surgery, the requirements for visibility, contrast, visual guidance as well as face recognition need to be provided by a lighting system with a good CRI of >80 or even >90.

How much is the light color affecting the space? The term color temperature describes the temperature of objects by which they emit light, modeled through the “blackbody radiator”. When increasing the temperature of a “blackbody”, it starts to emit visible light in a continuous spectrum. The filament of a 60W incandescent lamp heats up to about 3000°F, as a result the lamp emits light with a color temperature of 3000K. Many of our artificial light sources do not create light by heating up a material until it glows like an incandescent lamps. Instead of creating a continuous spectrum, they generate an assortment of color emission lines. A blackbody color temperature cannot be directly given to this non-blackbody type of emission, generated by high intensity discharge and fluorescent lamps for example. For those light sources, a correlated color temperature (CCT) is indicated, based on the blackbody color temperature. A cool white fluorescent lamp has a CCT of about 5000K. The lamps light spectrum is different from a blackbody one but has the same temperature.

The light color influences the atmosphere in a space. The more cozy the ambiance the warmer the light color (lower color temperature) should be and the more dynamic the scene the cooler the light source (higher color temperature). The CRI is the most important factor to watch when choosing light sources. How good is the light source representing faces, colors and contrasts? The easier the visual task and perception the lower the CRI can be. The color temperature needs to be watched second, it is supporting the space’s atmosphere.

Conclusion

There you have it; an explanation of both the Color Rending Index and Color Temperature.

Have anymore questions or thoughts? Comment them down below!