Vibrating-membrane electrometer has high conversion gain

Vibrating-membrane transducer in a circuit can measure current below 10 to-the-minus 17 ampere. This electrometer has a high conversion gain and a minimum internal power consumption

Vibrating element electrometer with output signal magnified over input signal by a function of the mechanical Q of the vibrating element Patent

Vibrating element electrometer producing high conversion gain by input current control of elements resonant frequency displacement amplitud

Natural Color Preservation

Specimens are preserved, primarily, in order to demonstrate or study at some future time, their appearance, shape, and structure as found in the living state. Heretofore, no one method of procedure or preservative has completely fulfilled all of these requirements. The development of such an ideal preservative has been unsuccessfully sought since the time of the ancient Egyptians, when the now lost art of embalming mummies was in vogue. The writer recalls reading some of the scientific articles dealing with natural colors in tissues, at about the same time an article appeared in one of the leading popular journals. This article described how the Russians had so ably preserved the body of Nicolai Lenin. It was stated that only one or two Russian scientists were allowed to know the method used. After 24 years of preservation, Lenin\u27s body is still seen in its original lifelike appearance by the hundreds of Russians who daily file by his mortal remains