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Describes the time it takes for a monitor to respond to a change in the input signal.

The LAI (Guidelines on the Measurement, Assessment and Mitigation of Light Pollution issued by the Federal/State Working Group on Pollution Control) is intended to protect the general public and local communities…

The protection and sustainable use of land are key aspects of environmental protection. Land – whether in the form of agricultural land, woodland, wetlands or urban areas – is a vital resource that fulfils a wide…

Light pollution must be taken into account as a potentially harmful environmental impact within the framework of land-use planning/approval procedures (environmental report, etc.). Assessment of existing light…

According to the Federal Nature Conservation Act, the landscape is to be protected, preserved and developed in all its diversity, distinctiveness and beauty. The preservation of the landscape is essential for…

The LASAT programme is an alternative to carrying out propagation calculations in accordance with TA Luft and can be used in the same way as AUSTAL, for which LASAT is the parent model.

A measuring instrument for non-contact vibration measurement. The measurement is based on the laser Doppler principle. Particularly suitable for vibration measurements at more distant or hot measurement points, or…

The time delay involved in the transmission of data.

A display technology in which liquid crystals control the light from a backlight.

Lead is a toxic heavy metal. It rarely occurs in its elemental form but is usually found in compounds with other substances. In the air, lead is detected in the form of particulate matter.

The light colour of a light source (from warm to cool) is described by its colour temperature in kelvins. It is measured using a spectroradiometer.

Translucent backlighting on televisions, which usually occurs at the edges of the screen and is caused by tension during installation.  

A collective term for the metrological determination of light emissions (light sources) and light immissions (residents, protected areas, etc.) in accordance with DIN 5032, Part 7, the LAI Light Guideline, DIN…

A light rail vehicle for local transport, which operates predominantly on tracks separate from the road and at ground level.   

Creation of three-dimensional calculation models (taking into account luminous flux and illuminance distribution). Optimisation of lighting design (optimised layout, appropriate selection of lamps and luminaires,…

The list of substances in Annex I to the StörfallV sets out the hazard categories and specifically named substances together with their respective quantity thresholds.

Presentation of sounds for comparison and for the subjective assessment of sound quality or other acoustic characteristics.

Areas where substances hazardous to water in containers or packaging are handled during loading, unloading, storage or transport.

A technique used in LCDs whereby individual areas of the backlight are dimmed to increase the contrast.

Measurements taken with a sound level meter at a specific location, where necessary while following the employee’s movements with the microphone.

Three-dimensional representations of buildings at various levels of detail.

A psychoacoustic parameter that describes the subjective perception of the intensity of a sound. It is expressed in sone.

The design of a workplace or workstation to minimise the impact of noise on employees. This can be achieved as early as in the planning stage by, for example, selecting low-noise machinery or installing physical…

The lower explosive limit (LEL) is the lowest concentration of a flammable gas or combustible dust in the air at which an explosion is possible. Below this limit, the mixture is too lean to cause an explosion. The…

In a lower-class operating area, hazardous substances are present in quantities that reach or exceed the quantity thresholds specified in column 4 of the list of substances stated in Annex I to the Major Accidents…

The luminance (unit: cd/m²) of a light source or an illuminated surface determines the perceived brightness. Determination of luminance at workstations, advertising displays, glare surfaces, etc. Measurements using…