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UPS in the gas phase, IPREM, Pau, France, Dr. JM Sotiropoulos, CNRS The ultraviolet photoelectron spectroscopy (UPS) was pioneered by Feodor I. Vilesov , a physicist at St. Petersburg (Leningrad) State University in Russia (USSR) in 1961 to study the photoelectron spectra of free molecules in the gas phase.
Unit price information printed on supermarket shelf labels (price tickets) illustrates the quantity of product by a unit of measure (price per 100 g, price per 100 ml). Unit pricing was originally designed as a device to enable customers to make comparisons between grocery products of different sizes and brand, hence enabling informed purchase ...
A rubber or plastic rack protects the cuvette from accidentally hitting and being scratched by the machine casing. The solvent and temperature can also affect measurements. [4] Cuvettes to be used in circular dichroism [5] experiments should never be mechanically stressed, as the stress will induce birefringence [6] in the quartz and affect ...
Action describes energy summed up over the time a process lasts (time integral over energy). Its dimension is the same as that of an angular momentum.. A phototube provides a voltage measurement which permits the calculation of the quantized action (Planck constant) of light.
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