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- W4247391678 abstract "An automatic snow-depth meter was constructed using an infrared beam from a gallium-arsenide photo-emission diode and an infrared detector consisting of a silicon photocell. As the field of view of both photoelectric elements is 30°, high mechanical accuracy is not required. The equipment consists of two poles of the same size, 4.8 m high and 20 cm by 20 cm wide, an operation controller, and a digital recorder. The two poles were set up on the ground facing each other at a distance of 5 m. One pole has the photo-emission diode and the other the infrared detector. In each pole, a long slit 4 cm wide and 4 m long was installed. Through one slit the infrared beam comes out and is received through the other slit. To avoid catching snow or rain in the slits, air was ejected through them." @default.
- W4247391678 created "2022-05-12" @default.
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- W4247391678 date "1975-01-01" @default.
- W4247391678 modified "2023-10-16" @default.
- W4247391678 title "An Automatic Snow Depth Meter By An Infrared Technique" @default.
- W4247391678 doi "https://doi.org/10.3189/s0022143000034754" @default.
- W4247391678 hasPublicationYear "1975" @default.
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