What's the difference between electrometer and electroscope?
Electrometer
Definition:
(n.) An instrument for measuring the quantity or intensity of electricity; also, sometimes, and less properly, applied to an instrument which indicates the presence of electricity (usually called an electroscope).
Example Sentences:
(1) The response of the hexose monophosphate shunt in erythrocytes was studied with the ionization chamber-electrometer apparatus to measure continuously 14CO2 derived from 14C-labeled substrates.
(2) System (chamber plus electrometer) factors as provided by three of the five ADCLs had a maximum discrepancy of 1.51%.
(3) The influence of doping material, doping level, various effects of radiation damage, mechanical construction, detector size, statistical noise and connection to the electrometer is discussed.
(4) The mechanism of this electrometer is based upon the relationship between the red cell content and the electrical conductivity of the blood.
(5) The remaining charge on the electret is read by an electrometer, through further irradiation.
(6) The system may be rapidly and easily constructed using a standard recording pH electrometer and a commercially available Pco2 electrode.
(7) A vibrating reed electrometer and current digitiser were used to measure the current produced by completely stopping the alpha particles in a large cylindrical ionisation chamber.
(8) One of the principal concerns of a physicist responsible for calibrating megavoltage radiotherapy equipment is the validity and stability of the 60Co exposure correction factor assigned to his ionization-chamber and electrometer system.
(9) Photoinduced generation of electric current by bacteriorhodopsin, incorporated into the planar phospholipid membrane, has been directly measured with conventional electrometer techniques.
(10) The PC monolayer was formedon 145 mM KCL in a teflon trough and the surface change was measured by means of a Kiethley electrometer, with the high impedence output connected to an Americium 241 air electrode and the low impedence output to a calomel reference electrode.
(11) The rate of HMPS activity was measured by the production of radioactive CO2 from 14C-1-glucose or 14C-1-ribose using a vibrating reed electrometer and ionization chamber.
(12) These exposure measurements then were repeated with various ionization chamber systems, including two Victoreen R meters (25- and 100-R chambers), a Capintec 192 dosimeter with a Farmer 0.6-cm3 probe, a PTW transit dose probe, and an EG and G IC-18 probe with a Keithley 610-B electrometer.
(13) In the recently published AAPM protocol for the dosimetry of high-energy photons and electrons, the response of an ionization chamber is defined as the dose to the gas in the chamber per unit electrometer reading, Ngas.
(14) The reported electrometer factor had a maximum discrepancy of only 0.50%.
(15) Using a sensitive electrometer and recording instrument, the subsequent change in hydrogen ion concentration is recorded as a function of time.
(16) A simple box of electronics, incorporating an integrated ratio circuit and 13 integrated circuit comparators, interfaces the electrometers to the scanner's printing mechanism.
(17) The chamber and electrometer calibration factor provided by each of the five ADCLs were analyzed for consistency.
(19) A system of regional facilities has been developed for radiation protection calibrations; each facility is supplied with a set of 137Cs sources and an ionization chamber and electrometer for use with x-rays.
(20) Eight years of data have been analyzed for two ion chambers (and their associated electrometers) irradiated at fixed geometry in such a device.
Electroscope
Definition:
(n.) An instrument for detecting the presence of electricity, or changes in the electric state of bodies, or the species of electricity present, as by means of pith balls, and the like.
Example Sentences:
(1) Precordial leads were first used by Waller, whose capillary electroscope was too insensitive to detect the electric forces emanating from the human heart unless the electrode was placed over the precordium as near to the heart as possible.
(2) Historical data for 32P activity induced in sulfur by fast neutrons have been corrected for decay with a recent half-life value of 32P and recalculated with an experimentally determined efficiency ratio of the electroscope for beta rays from 32P and natural uranium used as a standard.
(3) A new electroscope has been designed from the conventional Haslinger tubes.
(4) Radiation detectors have progressed from photographic plates and the gold leaf electroscope to the routine use of improved scintillation detectors for imaging the three-dimensional distribution of radioactive materials in the body as a function of space and time.