منابع مشابه
Gabriel Lippmann and the Capillary Electrometer
Early workers in the field of potentiometry faced a serious problem. The type of cell commonly used in potentiometric studies could supply only a tiny current and often had a high internal electrical resistance. If the electromotive force (emf) of such a cell is to be measured accurately, the apparatus must draw essentially no current from the cell. One obvious approach is to oppose this emf wi...
متن کاملPortable capillary-based (non-chip) capillary electrophoresis
Miniaturized, portable instrumentation has been gaining popularity in all areas of analytical chemistry. Capillary electrophoresis (CE), due to its main strengths of high separation efficiency, relatively short analysis time and low consumption of chemicals, is a particularly suitable technique for use in portable analytical instrumentation. In line with the general trend in miniaturization in ...
متن کاملELECTROMETER Definition
An electrometer is an electrical instrument for measuring electric charge or electrical potential difference. There are many different types, ranging from historical hand-made mechanical instruments to high-precision electronic devices. Modern electrometers based on vacuum tube or solid state technology can be used to make voltage and charge measurements with very low leakage currents, down to ...
متن کاملThe Displacements of the Capillary Electrometer, for Progressive Dilutions of the Electrolyte.
College of Agriculture, University of Illinois. The senior author is alone responsible for the manuscript and any views or shortcomings it may contain. 2 Detlefsen, A., These PROCUSDINGS, 6, 1920 (663-670). 8Weinstein, A., Genetics, 3, 1918 (135-174). 4Sturtevant, A. H., These PROCERDINGS, 7, 1921 (181-183). 6 Sturtevant, A. H., Carnegie Institution, Washington, Publ., No. 278, 1919 (305-341). ...
متن کاملNanoscale optical electrometer.
We propose and demonstrate an all-optical approach to single-electron sensing using the optical transitions of a semiconductor quantum dot. The measured electric-field sensitivity of 5 (V/m)/√Hz corresponds to detecting a single electron located 5 μm from the quantum dot-nearly 10 times greater than the diffraction limited spot size of the excitation laser-in 1 s. The quantum-dot-based electrom...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The London, Edinburgh, and Dublin Philosophical Magazine and Journal of Science
سال: 1903
ISSN: 1941-5982,1941-5990
DOI: 10.1080/14786440309462938