TY - JOUR AU - Mellanby, Kenneth AB - A method is described by which the humidity of the air in very small spaces can be measured. Paper is a hygroscopic substance which absorbs an amount of water from the air proportional to the relative humidity. Using a torsion balance, it is possible to measure the change in weight of a piece of paper which weighs about 10 mg. with sufficient accuracy to measure the relative humidity of the air to 2 per cent. TI - A simple hygrometer for use in small spaces JF - Journal of Scientific Instruments DO - 10.1088/0950-7671/10/11/304 DA - 1933-11-01 UR - https://www.deepdyve.com/lp/iop-publishing/a-simple-hygrometer-for-use-in-small-spaces-QHGa0ao0g3 SP - 349 VL - 10 IS - 11 DP - DeepDyve ER -