NATIONAL HIGH SCHOOL CHEMISTRY EXAMINATION (1995
... 14. Solid CO2 is called "dry ice", because it changes directly from a solid to a gas at –78°C without ever becoming liquid (at 1 atm pressure). When solid CO2 becomes a gas: A. Its energy decreases and its entropy decreases B. Its energy is constant and its entropy increases C. Its energy decreases ...
... 14. Solid CO2 is called "dry ice", because it changes directly from a solid to a gas at –78°C without ever becoming liquid (at 1 atm pressure). When solid CO2 becomes a gas: A. Its energy decreases and its entropy decreases B. Its energy is constant and its entropy increases C. Its energy decreases ...
Measurement of Colloidal Forces with TIRM
... separated by an aqueous solution. Both glass and PS are more dense than water, so a single sphere of several microns size, constructed of either material, will settle by gravity to the bottom of the container, which is usually a glass microscope slide. We arrange the experimental conditions so the s ...
... separated by an aqueous solution. Both glass and PS are more dense than water, so a single sphere of several microns size, constructed of either material, will settle by gravity to the bottom of the container, which is usually a glass microscope slide. We arrange the experimental conditions so the s ...
Title Photochemical chlorination of methane Author(s) Tamura, Mikio
... sent the reaction velocity at the moment of shutting off light, then T is given by ...
... sent the reaction velocity at the moment of shutting off light, then T is given by ...
Design and analysis of a low-threshold polymer circular-grating distributed-feedback laser
... design working lasers with polymers and other organic materials continue. Although considerable success has been achieved with optically excited organic distributedfeedback (DFB) lasers,1,2 lasing in an electrically pumped amorphous polymer laser has yet to be demonstrated. The main obstacle to desi ...
... design working lasers with polymers and other organic materials continue. Although considerable success has been achieved with optically excited organic distributedfeedback (DFB) lasers,1,2 lasing in an electrically pumped amorphous polymer laser has yet to be demonstrated. The main obstacle to desi ...
Rejection of two-photon fluorescence background in
... where ~ρ and z are coordinates relative to the laser beam focus (i.e. the surface of the sample is located at a negative z). This is the surviving portion of the laser intensity that has not incured scattering on its Rpassage to depth z. The lateral beam profile is written as PSF(~ρ , z), which we n ...
... where ~ρ and z are coordinates relative to the laser beam focus (i.e. the surface of the sample is located at a negative z). This is the surviving portion of the laser intensity that has not incured scattering on its Rpassage to depth z. The lateral beam profile is written as PSF(~ρ , z), which we n ...
Reflection and Refraction of Plane Waves
... Reflectance and Transmittance • The Fresnel formulas give the ratios of the amplitude of the reflected wave and the transmitted wave to the amplitude of the incident wave. • The power flow parallel to the boundary surface is unaffected and is a constant throughout the medium. • As far as the reflec ...
... Reflectance and Transmittance • The Fresnel formulas give the ratios of the amplitude of the reflected wave and the transmitted wave to the amplitude of the incident wave. • The power flow parallel to the boundary surface is unaffected and is a constant throughout the medium. • As far as the reflec ...
Example 4
... • The Molarity of a solution is the number of moles of solute per litre of solution • A 1 molar solution is a solution which contains one mole of solute per litre of solution also, - a solution which contains 2 moles of solute in a litre of solution is said to be 2 molar (2M) - a solution which cont ...
... • The Molarity of a solution is the number of moles of solute per litre of solution • A 1 molar solution is a solution which contains one mole of solute per litre of solution also, - a solution which contains 2 moles of solute in a litre of solution is said to be 2 molar (2M) - a solution which cont ...
Skin Color Measurements: Usefulness of the Metric Hue
... medicine, as well as computer rendering [1, 2]. The diversity of skin colors among people, or according to different locations on the same person, at different times depends mostly on three main characteristic parameters. The concentration of melanosomes, the concentration of red blood cells, and th ...
... medicine, as well as computer rendering [1, 2]. The diversity of skin colors among people, or according to different locations on the same person, at different times depends mostly on three main characteristic parameters. The concentration of melanosomes, the concentration of red blood cells, and th ...
Spectroscopic Characterization of Mixed Fe−Ni
... occurs simultaneously with hydrogen evolution. The hydrogen evolution reaction is a relatively simple reaction that readily occurs at low overpotential on many metals.1 The oxygen evolution mechanism, in contrast, has several steps that have large reaction barriers, which lead to large required over ...
... occurs simultaneously with hydrogen evolution. The hydrogen evolution reaction is a relatively simple reaction that readily occurs at low overpotential on many metals.1 The oxygen evolution mechanism, in contrast, has several steps that have large reaction barriers, which lead to large required over ...
The Michelson Interferometer Wavelength Meter
... Wavelength Measurement with Respect to a Wavelength Standard The interferogram of the unknown signal is compared to that of the known standard The wavelength of the unknown signal can be calculated by comparing fringe counts in the unknown and the reference signal paths and taking the ratio of count ...
... Wavelength Measurement with Respect to a Wavelength Standard The interferogram of the unknown signal is compared to that of the known standard The wavelength of the unknown signal can be calculated by comparing fringe counts in the unknown and the reference signal paths and taking the ratio of count ...
Chemical equations and stoichiometry
... product) is specified. Find out mass of another chemical required or produced in the reaction (assuming just enough of each reactant is present). Must use a balanced chemical equation. ...
... product) is specified. Find out mass of another chemical required or produced in the reaction (assuming just enough of each reactant is present). Must use a balanced chemical equation. ...
ANALYST
... the same way. Sequential injection goes one step further, by exploiting stopped flow to gain sufficient time for chemical reactions to produce a desirable amount of detectable compound. If this amount is produced by a fast reaction already during the mixing stage, then the reacted zone flows continu ...
... the same way. Sequential injection goes one step further, by exploiting stopped flow to gain sufficient time for chemical reactions to produce a desirable amount of detectable compound. If this amount is produced by a fast reaction already during the mixing stage, then the reacted zone flows continu ...
Attosecond lighthouse driven by sub-two
... using an a few-cycle infrared driver than are the beamlets produced with an 800 nm driver [15, 16]. Second, we show that long wavelength drivers allow us to apply the attosecond lighthouse to low ionization potential molecules. This opens a pathway for measuring important polar molecules where subse ...
... using an a few-cycle infrared driver than are the beamlets produced with an 800 nm driver [15, 16]. Second, we show that long wavelength drivers allow us to apply the attosecond lighthouse to low ionization potential molecules. This opens a pathway for measuring important polar molecules where subse ...
Spatial amplitude and phase modulation using commercial twisted
... By combining four neighboring pixels into one superpixel, we decouple the modulation of the phase and the amplitude, thereby achieving full independent phase and amplitude control of light. Any arbitrary complex amplitude can be synthesized even though each individual pixel on the SLM has a limited ...
... By combining four neighboring pixels into one superpixel, we decouple the modulation of the phase and the amplitude, thereby achieving full independent phase and amplitude control of light. Any arbitrary complex amplitude can be synthesized even though each individual pixel on the SLM has a limited ...
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.