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What is Kelvin

Horace He

Last Updated: December 26, 2023

What is Kelvin

Kelvin is a unit of measurement used to quantify the color temperature of light sources. It is the SI unit of thermodynamic temperature and is denoted by the symbol K. The kelvin scale is an absolute scale that starts at 0 kelvin, representing absolute zero, which is the point at which a thermodynamic system has its lowest energy. The kelvin scale is different from the Fahrenheit and Celsius temperature scales as it is not expressed in degrees and does not have negative values.

The color temperature of a light source is a characteristic that describes the color appearance of the light emitted. It is measured in kelvin and indicates whether the light appears warm or cool. Lower color temperatures, such as 2700K to 3000K, are associated with warm or yellowish light, similar to the color of incandescent bulbs. Higher color temperatures, such as 5000K to 6500K, are associated with cool or bluish light, similar to daylight or natural sunlight.

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Understanding the color temperature of light sources is important in lighting design as it can greatly impact the mood, ambiance, and functionality of a space. Different applications may require different color temperatures to achieve the desired lighting effect. For example, warm color temperatures are often used in residential settings to create a cozy and inviting atmosphere, while cool color temperatures are commonly used in commercial and task lighting to promote alertness and productivity.

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Frequently Asked Questions

Is 5000K Light Bad for Your Eyes

Above a color temperature of 5000K, such as in parking lots, industrial lighting, and other large outdoor venues, or in certain cases where high intensity lighting is required, it is not recommended to work for extended periods of time as it can be detrimental to the eyes.

Which Is Brighter 3000K or 5000K

A 5000K LED bulb emits a bright daylight color. This type of color temperature is ideal for areas where you need a well-lit and energizing environment.

Which Is Brighter Cool White or Neutral White

Installing cool white LEDs will provide a more intense and clearer illumination. Consider places like hospitals or professional kitchens, where it is crucial to have bright and clear lighting for visibility. On the Kelvin scale, this type of white light typically falls within the range of 5000-6500K.

What LED Light Is Closest to Daylight

By definition, a LED bulb that emits light with a color temperature of 6500K, known as daylight white, will have a similar appearance to natural daylight.

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