CBSE Physics Set I Delhi Board 2010
... which the conductor PQ is free to move in a uniform magnetic field B perpendicular to the plane of the paper. The field extends from x = 0 to x = b and is zero for x > b. Assume that only the arm PQ possesses resistance r. When the arm PQ is pulled outward from x = 0 with constant speed v, obtain ...
... which the conductor PQ is free to move in a uniform magnetic field B perpendicular to the plane of the paper. The field extends from x = 0 to x = b and is zero for x > b. Assume that only the arm PQ possesses resistance r. When the arm PQ is pulled outward from x = 0 with constant speed v, obtain ...
1) In the reaction H2O + CH3COOH H3O+ + CH3COO
... Zn2+/Cu2+, in the electrolyte will be required if one wants a 1.10 V zero current potential? Assume that the temperature is 298 K and that all activity coefficients are one. Hint: What is the Q in the Nernst equation for this reaction? ...
... Zn2+/Cu2+, in the electrolyte will be required if one wants a 1.10 V zero current potential? Assume that the temperature is 298 K and that all activity coefficients are one. Hint: What is the Q in the Nernst equation for this reaction? ...
Wednesday, Feb. 25, 2015
... Planck assumed that the radiation in the cavity was emitted (and absorbed) by some sort of “oscillators” that were contained in the walls. He used Boltzman’s statistical methods to arrive at the following formula that fit the blackbody radiation data. ...
... Planck assumed that the radiation in the cavity was emitted (and absorbed) by some sort of “oscillators” that were contained in the walls. He used Boltzman’s statistical methods to arrive at the following formula that fit the blackbody radiation data. ...
Monitoring Reactions by TLC The fastest and most commonly used
... Needed equipment and supplies: (1) a TLC chamber equipped with a lid (2) silica gel plates (6 cm x 2.5 cm) impregnated with a phosphorescent dye (Merck silica gel 60 F-254 or JT-Baker Si250F, 0.25 mm thickness). (3) TLC solvents - A binary mixture of miscible solvents usually works best. TLC solvent ...
... Needed equipment and supplies: (1) a TLC chamber equipped with a lid (2) silica gel plates (6 cm x 2.5 cm) impregnated with a phosphorescent dye (Merck silica gel 60 F-254 or JT-Baker Si250F, 0.25 mm thickness). (3) TLC solvents - A binary mixture of miscible solvents usually works best. TLC solvent ...
The Balmer Lines of Hydrogen and Deuterium
... ∆λ steps may be used during wide-wavelength scans. This speeds up the scan while still detecting all lines in the spectrum. The monochromator’s light output is detected by a photomultiplier which emits a current proportional to the signal intensity. The experimenter can adjust the photomultiplier’s ...
... ∆λ steps may be used during wide-wavelength scans. This speeds up the scan while still detecting all lines in the spectrum. The monochromator’s light output is detected by a photomultiplier which emits a current proportional to the signal intensity. The experimenter can adjust the photomultiplier’s ...
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... Background: A high-average-power solid-state laser is typically pumped by injecting light from high-power two-dimensional semiconductor laser arrays. The laser arrays are frequently fitted with lenses that separately collimate the output of the bars so that the pump light is collimated well enough f ...
... Background: A high-average-power solid-state laser is typically pumped by injecting light from high-power two-dimensional semiconductor laser arrays. The laser arrays are frequently fitted with lenses that separately collimate the output of the bars so that the pump light is collimated well enough f ...
Raman spectroscopy of nanostructures and single molecules
... In this tutorial we will review scientific topics involving a most important analytical tool in which virtually any sample, crystals, liquids, solutions, pastes, powders, films, fibres, gases and surfaces can be studied using current easily available accessories. Infrared spectroscopy, spanning from ...
... In this tutorial we will review scientific topics involving a most important analytical tool in which virtually any sample, crystals, liquids, solutions, pastes, powders, films, fibres, gases and surfaces can be studied using current easily available accessories. Infrared spectroscopy, spanning from ...
AR4000
... slightly. Analog temperature and ambient light outputs allow these effects to be compensated for in software, but typically they are not significant unless the sensor is used in an environment where they vary widely. Finally, the period of the range signal (laser modulation period) is not exactly pr ...
... slightly. Analog temperature and ambient light outputs allow these effects to be compensated for in software, but typically they are not significant unless the sensor is used in an environment where they vary widely. Finally, the period of the range signal (laser modulation period) is not exactly pr ...
MICROWAVE OPTICS – THE MEASUREMENTS OF THE
... (what corresponds to the frequencies of 109-1011Hz). These waves are used in radars and other communication systems, as well as in the analyses of very fine details of atomic and molecular structure, and are also generated by electronic devices. As everybody knows interference is one of the phenomen ...
... (what corresponds to the frequencies of 109-1011Hz). These waves are used in radars and other communication systems, as well as in the analyses of very fine details of atomic and molecular structure, and are also generated by electronic devices. As everybody knows interference is one of the phenomen ...
Measurement of the Wavelength of Light
... performing a linear fit in Method B, the deviation from the true value was smaller: |λ − λB | |675 nm − 696 nm| ...
... performing a linear fit in Method B, the deviation from the true value was smaller: |λ − λB | |675 nm − 696 nm| ...
Difficulties associated with working with UV and IR optics
... Reflective coatings are limited to wavelengths greater than 0.15 microns if they are to be broadband, though narrow bandwidth filters can be designed for lower wavelengths [1]. One of the difficulties associated with coating UV optics is that coatings are applied at high temperatures, so stress is i ...
... Reflective coatings are limited to wavelengths greater than 0.15 microns if they are to be broadband, though narrow bandwidth filters can be designed for lower wavelengths [1]. One of the difficulties associated with coating UV optics is that coatings are applied at high temperatures, so stress is i ...
A new method for measuring the diffusivity of liquid binary mixtures
... where a highly sensitive CCD camera has replaced the plate as a recording medium, while the reconstruction is done by electronic processing. The basic system (figure 1) consists of a continuous wave HeNe laser to provide a cheap and rugged light source, a CCD camera, a n imaging lens, a monitor and ...
... where a highly sensitive CCD camera has replaced the plate as a recording medium, while the reconstruction is done by electronic processing. The basic system (figure 1) consists of a continuous wave HeNe laser to provide a cheap and rugged light source, a CCD camera, a n imaging lens, a monitor and ...
Chapter 38: Quantization
... It is impossible to design an apparatus to determine which hole the electron passes through, that will not at the same time disturb the electrons enough to destroy the interference pattern. ...
... It is impossible to design an apparatus to determine which hole the electron passes through, that will not at the same time disturb the electrons enough to destroy the interference pattern. ...
A nanometer notch filter with high rejection and throughput
... the context of forward scattering. Absorption filters of the same material as the lasing medium can offer considerably less than lo-nm bandwidth;lY2in the caseof ruby, the presence of two adjacent absorption lines (Rl and R2) limits the bandwidth to a few nanometers. Rejection based on grating spect ...
... the context of forward scattering. Absorption filters of the same material as the lasing medium can offer considerably less than lo-nm bandwidth;lY2in the caseof ruby, the presence of two adjacent absorption lines (Rl and R2) limits the bandwidth to a few nanometers. Rejection based on grating spect ...
EVERYDAY ENGINEERING EXAMPLES FOR SIMPLE CONCEPTS
... frequency at which they tend to vibrate. When a light wave with that same natural frequency impinges upon an atom, then the electrons of that atom will be set into vibrational motion. If a light wave of a given frequency strikes a material with electrons having the same vibrational frequencies, then ...
... frequency at which they tend to vibrate. When a light wave with that same natural frequency impinges upon an atom, then the electrons of that atom will be set into vibrational motion. If a light wave of a given frequency strikes a material with electrons having the same vibrational frequencies, then ...
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.