yoruglik

yorug’lik, or light in Uzbek, refers to the perception of visible electromagnetic radiation and to the broader phenomenon of illumination in daily life. In physics, it denotes the portion of the electromagnetic spectrum visible to the human eye, typically about 380 to 750 nanometers. In common usage, yorug’lik encompasses both natural light, such as daylight from the sun, and artificial light produced by lamps, LEDs, and other sources.

Light is characterized by several properties. Illuminance measures how much light lands on a surface, and is expressed in lux. Luminance describes the brightness of a surface as perceived by the eye, measured in nits or candela per square meter. Spectral composition and color temperature influence the feel and rendering of a scene; color rendering index (CRI) indicates how faithfully a light source reveals colors. Luminous flux, measured in lumens, summarizes the total perceived output of a light source.

Sources of yorug’lik are natural and artificial. Natural light varies with time of day, weather, and season. Artificial light enables visibility indoors and at night and plays a central role in lighting design, photography, theater, horticulture, and workplace productivity. Energy efficiency and environmental impact drive modernization toward LED and other low-energy technologies, while minimizing light pollution and glare.

Measurement and standards are used to plan and regulate lighting. Lux meters assess illuminance, while professional guidelines from organizations such as lighting and energy bodies help ensure adequate visibility, comfort, and safety in homes, workplaces, and public spaces.