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Exam 1 Goals
Exam 1 Goals

... i. How is it calculated? b. What is hydration? i. What determines the size of the hydration sphere? c. What is the ionic atmosphere? i. How is this related to ionic strength? d. How is activity related to hydration shell and ionic atmosphere? e. How is activity related to ionic strength? i. Relation ...
Construction of a 408 nm Laser System for Use in Ion Interferometry
Construction of a 408 nm Laser System for Use in Ion Interferometry

... The central feature of any interferometer is that there is a travelling wave that is split and sent along two distinct paths. At some later point, the waves from the two paths are recombined. The output of the interferometer depends on the relative phase acquired by the wave as it travels along the ...
Comprehensive and reliable diagnostics for the corona of laser
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... pulses at with pulse energy of 500 mJ, pulse duration varying from 150 to 550 ps. When it is used as probe laser, the shortest pulse duration is always selected. Second and fourth harmonics are available, the corresponding energies are 240 and 60 mJ respectively. The line width is less than 0.1 cm-1 ...
Inducing Vortices in a Bose-Einstein Condensate using light beams
Inducing Vortices in a Bose-Einstein Condensate using light beams

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... Phase profiles are imprinted on the wavefront of a collimated beam from a continuous wave ytterbium-doped fiber laser (IPG Photonics, λ = 1064 nm) using an electronically addressed, reflective SLM (P512-1064, Boulder Nonlinear Systems). The SLM is operated in a phaseonly mode which controls the phas ...
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Holographic beam - Meadowlark Optics

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... As a result of their complete ionization, the concentration of ions in the solution is proportional to the concentration of LiClO4(s) added into the solvent. Kohlrausch suggested an empirical relationship as shown in eqn. 3. Therefore, this equation can be used to determine the validity of the condu ...
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... gap sizes ranging from 24 to 55 nm at a step around 10 nm [Fig. 2(c)]. All the arrays have a period of 600 nm, which is much larger than the size of the loop, such that the near field coupling among the neighboring antennas is negligible. The measured far-field transmission spectra for these arrays ...
Far-field measurement of ultra-small plasmonic mode volume Shuang Zhang, Yong-Shik Park,
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... gap sizes ranging from 24 to 55 nm at a step around 10 nm [Fig. 2(c)]. All the arrays have a period of 600 nm, which is much larger than the size of the loop, such that the near field coupling among the neighboring antennas is negligible. The measured far-field transmission spectra for these arrays ...
AP® Chemistry
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... Many students wonder whether or not to guess the answers to the multiple-choice questions about which they are not certain. It is improbable that mere guessing will improve a score. However, if a student has some knowledge of the question and is able to eliminate one or more answer choices as wrong, ...
AP® Chemistry
AP® Chemistry

... Many students wonder whether or not to guess the answers to the multiple-choice questions about which they are not certain. It is improbable that mere guessing will improve a score. However, if a student has some knowledge of the question and is able to eliminate one or more answer choices as wrong, ...
sensors Chemical Sensing Using Fiber Cavity Ring-Down Spectroscopy
sensors Chemical Sensing Using Fiber Cavity Ring-Down Spectroscopy

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Ultraviolet–visible spectroscopy



Ultraviolet–visible spectroscopy or ultraviolet-visible spectrophotometry (UV-Vis or UV/Vis) refers to absorption spectroscopy or reflectance spectroscopy in the ultraviolet-visible spectral region. This means it uses light in the visible and adjacent (near-UV and near-infrared [NIR]) ranges. The absorption or reflectance in the visible range directly affects the perceived color of the chemicals involved. In this region of the electromagnetic spectrum, molecules undergo electronic transitions. This technique is complementary to fluorescence spectroscopy, in that fluorescence deals with transitions from the excited state to the ground state, while absorption measures transitions from the ground state to the excited state.
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