. Compendium of meteorology. Meteorology. Fig. 1.—Schematic diagram of a quadrant Fig. 2.—Wulf's bifilar electrometer. mately 80 per cent. Figuie 4 gives one example of a suitable form of open-air insulator which has held up well in practice. To combat insects and spiders it is helpful to paint the metal parts about the air gap with an adhesive substance (fly-paper glue) and also with aromatic insect repellants. To eliminate air-borne spider threads in summer and fall, mechanical methods must be applied. In all electrostatic measurements it is essential to maintain good groundin
. Compendium of meteorology. Meteorology. Fig. 1.—Schematic diagram of a quadrant Fig. 2.—Wulf's bifilar electrometer. mately 80 per cent. Figuie 4 gives one example of a suitable form of open-air insulator which has held up well in practice. To combat insects and spiders it is helpful to paint the metal parts about the air gap with an adhesive substance (fly-paper glue) and also with aromatic insect repellants. To eliminate air-borne spider threads in summer and fall, mechanical methods must be applied. In all electrostatic measurements it is essential to maintain good grounding of all parts to be maintained at zero potential. In general, grounding to a water pipe is satisfactory. It is particularly important that all parts to be grounded are connected to the same ground. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original American Meteorological Society. Committee on the Compendium of Meteorology; Malone, Thomas F. Boston : American Meteorological Society
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