Fluorescent tube

Piezoelectric buzzer LED laser Fluorescent tube EL display... 

These restrictions do not apply to the less intense fluorescent tubes installed in the UVIS or MinUVIS (Fig. 6) or Universal UV lamps (Fig. 7). Black glass surrounds or screens serve as filters. Unfortunately account is often not taken of the fact that the transparency for short-wavelength UV light decreases appreciably with increasing duration of irradiation (Fig. 8). So it is advisable to change the filters of lamps intended for short-wavelength radiation at regular intervals. They can... 

The /ac-isomers are conveniently made by a general reaction involving irradiation (fluorescent tube) of a solution of the wer-isomer [155]... 

Fluorescent tubes come in different colors. Cool white is most... 

Replacing a light bulb is a simple task, but it should be noted that the new bulb must not be of higher wattage. When replacing fluorescent tubes, special care must be used, since serious injury could result from breakage. It is not advisable to mix tubes of different colors when replacement becomes necessary. 

Of other concern are mercury-containing lamps. At the end-of-life, compact fluorescent lamps/fluorescent tube lights (CFLs/FTFs) are either disposed in bulk (sold in auction) or disposed individually along with municipal waste. Proper and safe collection of these products would mean its intact collection, transportation and recovery of different components including mercury. The case study outlines the possible hazardous consequences due to improper handling of EoL CFLs and FTLs and proposes a future safe collection, recycling and disposal plan. 

Filter combinations with 40 nm band width 20 W fluorescent tube. 15 ft candles constant incident intensity [Gracilis] [LL] [Li]. Double light trap selection method. Relative accumulation after time. Visual evaluation. Wolken and Shin109)... 

The general requirements for accelerated weathering apparatus are given in ISO 4892-1 [29], whilst ISO 4892 Parts 2-4 [26-28] deal more specifically with xenon arcs, fluorescent tubes and carbon arcs respectively. ISO 4892 refers to ISO 9370 [30] (Instrumental determination of radiant exposure in weathering tests), and CIE publication 85 (Solar spectral irradiance) [31]. 

In a Rapra study both natural PP and HDPE were tested together with similar materials containing carbon black as a stabiliser. The carbon black containing materials showed essentially no change in tensile strength after 1,035 days exposure in the UK, 510 days in Australia and 200 days in various accelerated exposures using QUVA lamps (fluorescent tubes which stimulate the UV sector (<400 nm wavelength)) and Xenon arc equipment (which stimulates the solar system). 

In another series of trials, geotextiles were exposed in two natural weathering sites one in southern France and the other in Berlin [13]. At the same time they were exposed to three methods of accelerated testing, with either xenon arcs or fluorescent tubes. 

Irradiation Mercury lamps Mercury lamps Fluorescent tubes Black fluorescent lamps Black fluorescent lamps Solar... 

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