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LASER PHYSICS
LASER PHYSICS

... transparency windows in Figs. 3. The measured FWHMs are (b) 23 kHz, (c) 30 kHz, and (d) 63 kHz. All the EIT linewidths are much narrower than the laser jitter and comparable to the spin inhomogeneous linewidth (29 kHz) of the 10.2 MHz transition. This insensitivity to correlated laser jitter is the ...
chapter15-burno.1348..
chapter15-burno.1348..

A Basic Introduction to BRDF-Based Lighting
A Basic Introduction to BRDF-Based Lighting

... contact with a certain material. Similarly, a BTDF (Bi-directional Transmission Distribution Function) describes how much light is transmitted when light makes contact with a certain material. In general, the degree to which light is reflected (or transmitted) depends on the viewer and light positio ...
che 3221-analytical chemistry ii - UR-CST
che 3221-analytical chemistry ii - UR-CST

... c. How might the number of theoretical plates in a chromatographic column be determined? (2 marks) d. State classification of analytical methods by filling the following table with required information: (4 marks) Name of the method Basic principle Electroanalytical methods Determination of the mass ...
A New Fiber Optic Spring
A New Fiber Optic Spring

... springs are used for a large variety of functions in sensor applications such as the measurement of force, acceleration, vibration, and pressure. Although they provide different information, coiled metal springs have been used for at least 500 years in a variety of machine design applications and me ...
Lecture 5. Interstellar Dust and Extinction 1. Introduction 2. Extinction
Lecture 5. Interstellar Dust and Extinction 1. Introduction 2. Extinction

... wide distribution of grain sizes are involved. • A substantial fraction of the heavy elements are bound up in dust. • The 220 nm bump and the 9.7 &18μm features Indicate that dust contains C and Si, respectively, Ay216 ...
Chemistry 400
Chemistry 400

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Exam No. 1
Exam No. 1

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Structure of Optical Vortices
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Photoelectric Effect
Photoelectric Effect

... respectively. If both metals are illuminated by white light (wavelengths between 400nm and 700nm), which one gives off photoelectrons with the greater maximum kinetic energy? Assuming electrons are ejected from both metals, the answer should be cadmium, because it has a lower work function – less en ...
7.1 textbook answers - aiss-science-9
7.1 textbook answers - aiss-science-9

... Answers to Science Focus 3 second edition Student Book questions Suggested answers 1 The greater the angle of the ruler, the more the ruler appears to bend. 2 The ruler appears to be larger under water because of the light rays bending as they pass through one medium into another. 3 The more water ...
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File - Chem with Appleby

... As you can see, the ratio of ________________ to ___________ remains constant at this temperature no matter what the initial concentrations of NO2 and N2O4 are. ...
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Kinetics MC Questions

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Optical metamaterials at near and mid-IR range fabricated by nanoimprint lithography
Optical metamaterials at near and mid-IR range fabricated by nanoimprint lithography

... low-cost posed another challenge, especially for metamaterials operating in the infrared or visible range: nanoscale patterning resolution is required, since these feature sizes are smaller than the resolution of state-of-the-art photolithography due to the diffraction limit. Most of the previous wo ...
Optical metamaterials at near and mid-IR range fabricated by nanoimprint lithography
Optical metamaterials at near and mid-IR range fabricated by nanoimprint lithography

... low-cost posed another challenge, especially for metamaterials operating in the infrared or visible range: nanoscale patterning resolution is required, since these feature sizes are smaller than the resolution of state-of-the-art photolithography due to the diffraction limit. Most of the previous wo ...
Measuring Rates
Measuring Rates

... The integrated rate law for a chemical reaction expresses how the concentration of a relevant reacting species changes as a function of time. Thus, it can be used to predict the time it will take for a reactant or product to reach a given concentration, or to predict such concentration at a selected ...
Ocean optics estimation for absorption, backscattering, and phase
Ocean optics estimation for absorption, backscattering, and phase

Wavelength swept amplified spontaneous emission source
Wavelength swept amplified spontaneous emission source

... OFDI [7]) offer several potential advantages: (i) The realization of dual balanced detection is easier, suppressing noise and auto-correlation artifacts; (ii) SS-OCT systems often have a longer ranging depth because of the narrow linewidth and long instantaneous coherence length of the applied laser ...
Single-particle-sensitive imaging of freely propagating ultracold atoms
Single-particle-sensitive imaging of freely propagating ultracold atoms

... signal variance [21]. In appendix C, we lay out the calibration procedure of the camera used to reconstruct photon number expectation values from the amplifier output. The remaining major technical noise caused by the camera are clock-induced charges (CIC) which are created by the pixel row shifting ...
Section 1 Bohr`s Model of the Atom: Practice Problems
Section 1 Bohr`s Model of the Atom: Practice Problems

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... In the process of cheese making a bacterial culture is added to milk, which causes the milk to separate into the curds (solid cheese) and whey (remaining liquid). During this process the bacteria convert the lactose present in milk, into lactic acid, CH3CHOHCOOH. Lactic acid is a weak, monoprotic, o ...
Bending What is Optical Fiber Dispersion?
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Balanced homodyne detection with high common mode rejection
Balanced homodyne detection with high common mode rejection

... Electronic noise and gain of the photodetector set a strong limit to the measurement of quantum noise. In order to reduce the influence of the electronic noise on the measured value, the photodetector should be designed to make the clearance between shot noise and electronic noise much higher than t ...
introduction - Academic Science,International Journal of Computer
introduction - Academic Science,International Journal of Computer

... transmission property due to resonant tunneling between the quantized states, experimentally confirmed by Xu [14] at lower wavelength region. Lin [15] suggested high-Q resonant cavity can be formed using photonic bandgap quantum confined structures whose reflectivity is dependent on cavity modal fre ...
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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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