illuminance

Initially, the oil was used as a lubricant for the railroad industry and as an illuminance.

The Reckless Decade: America in the 1890s 1996

In average it will be 1 - 3% of the general lighting’s illuminance.

6. Installation of emergency lighting systems Werner Boschitsch 1991

With the illuminance given the light source can be found.

3. Calculation of Illuminance Frank Ponemunski 1991

Since the rated luminous flux is greater than the calculated one, it derives for the illuminance in point ‘P’: for high-pressure mercury vapour illumination 128 lx and for high-pressure sodium vapour illumination 139 lx

3. Calculation of Illuminance Frank Ponemunski 1991

It is also possible to proceed this way: Calculation from a given arrangement of illuminators and the given luminous flux per illuminator taking into consideration the light distribution of the illuminators the illuminance, for instance at a certain point of the working area.

3. Calculation of Illuminance Frank Ponemunski 1991

The illuminance of special lighting may be up to 100% of the general lighting’s illuminance.

6. Installation of emergency lighting systems Werner Boschitsch 1991

A consequence of the putting into practice of so great an illuminance is that the luminance in the range of vision can no more be an optimal one, if no coloured surfaces are used in the working room.

2. Elements Frank Ponemunski 1991

Its mean illuminance will be less than that of the general lighting.

6. Installation of emergency lighting systems Werner Boschitsch 1991

Illumination or illuminance in various systems of units lx ph fc

2. Elements Frank Ponemunski 1991

The illuminance required in a room or at a working place must be realized - according to the respective visual task - by a suitable number and type of lamps and lighting fittings and their arrangement.

3. Calculation of Illuminance Frank Ponemunski 1991