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!

The benefits of having solar panels installed in your home is well known, but few people understand the way that solar panels work. It won’t make much difference to your daily life to understand photovoltaic cells, but inquiring minds will benefit from this brief discussion. Before you invest in a solar installation, take some time to understand them.

At they’re most basic, photovoltaic cells convert the energy of ultraviolet light into electricity. The sunlight hits the atoms of a semiconductor, most often silicon mixed with a very small amount of phosphorus. The phosphorus is included in the pure silicon crystal because it has an “extra” electron. When hit by sunlight, this electron is “knocked” loose. Should it find an atom lacking an electron, it would come to rest there, but the tight, perfect crystal lattice prevents that. The electron, known as a “free carrier,” continues wandering.

All the electrons excited by sunlight in a solar panel would move around aimlessy if we didn’t provide them any direction. Placing a conductor at either end of a panel allows us to dictate the direction of the electrons away from the panel and towards the batteries that are the next step in the solar installation.

Of course, this is a great reduction of the actual process of converting solar energy into electricity. The reality involves a greater understanding of physics and chemistry. Over the years, science and industry has harnessed the power of this simple interaction between a few molecules and sunlight to greater degrees, until today, when we have a finely tuned grasp on the process. Indeed, solar panels are far more efficient today than they ever have been in the past.

And that is just one of the reasons that today is the perfect time to invest in a solar installation for your home. If you’re eager to understand the power of investing in home solar, give us a call today and let us explore the options with you.

As summer winds down, you are probably just about tired of the heat and the high electrical bills of July and August. September can be pretty hot as well, but you are ready for a break from the heat and the ridiculous power bills.

Never fear, an electrician Burbank residents have been relying on for years has some tips you can use to get you through the end of summer and apply to next year’s hot months. The Electric Connection has the staff you need to help you stay cool in the summer.

1-Close the blinds and curtains early in the morning to prevent the sunlight from heating up the house. Darken the house before you leave for work and it will be much cooler in the evening.

2-Turn the AC up a couple of degrees. Wear light clothing in the house to make it more tolerable. 2 degrees can make a big difference.

3-Do not do any major cooking or clothes drying during the hottest part of the day. Save it for early in the morning or evening hours.

4-Use ceiling fans and oscillating fans to keep the house cool. Fans help move the air, creating a breeze that will keep you comfortable. If you do not have a ceiling fan, or would like additional fans installed, call your electrician. Burbank residents will appreciate the cost savings of a fan instead of solely relying on the air conditioning unit.

5-Consider having an attic fan installed. These fans are designed to pull in the cooler outdoor air from underneath a home’s roof into the attic and pushing out the hot, stuffy attic air. This can help keep the entire home much cooler without overworking the air conditioner.

If you would like to learn more about ceiling fans or attic fans, give The Electric Connection a call today.