Example: tourism industry
The Sodium D Lines
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Safety Tips for Using UV Lamps - Berkeley Lab
www2.lbl.govsodium iodide. Once the arc tube reaches its running temperature, the sodium dissociates from the iodine, which adds orange and red to the lamp’s spectrum from the sodium D line as the metal ionizes. As a result, metal halide lamps produce an intense white light and have high luminous efficacy at
<781> OPTICAL ROTATION - DrugFuture
www.drugfuture.comlight so that the transmitted light emerges at a measurableson, the D-line of the sodium lamp at the visible wavelength angle to the plane of the incident light. This property is of 589 nm was most often employed. Specific rotation de-characteristic of some crystals and of many pharmaceutical termined at the D-line is expressed by the symbol: