Salahuddin and Datta found that, under certain conditions, the use of ferroelectric materials leads to a negative capacitance (that is, the voltage of the capacitor decreases as charge is added).
However, the market is flooded with various hygrometers, and all of them claim to be the best, which can be quite confusing. This article will help you find the best hygrometer for your needs ...
IN connexion with Dr. J. Grant's letter 1, on paper hygrometers, some experiments made some months ago on an experimental paper-operated indicating hygrometer may be of interest. The instrument ...