Huntington II Simulation Program - SLITS (Resource Handbook). A computer simulation of Young's Double-Slit Experiment. Digital Equipment Corporation. From The David H. Ahl Collection.
Topics: DEC, EDU, BASIC, AHL, HUNTINGTON, SLITS
Huntington II Simulation Program - SLITS (Teacher's Guide). A computer simulation of Young's Double-Slit experiment. Digital Equipment Corporation Education. From The David H. Ahl Collection.
Topics: DEC, EDU, AHL, BASIC, HUNTINTON, SLITS
4
4.0
Apr 20, 2021
04/21
by
ty harness (tyh)
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Fairly self explanatory It's the algebra that's the interesting part - please see the scad file. I used to be a sheet metal worker way back in the 20th C. and it's surprising how many kids don't know how to set up equispaced holes, bars, slits etc. Well none of us paid enough attention in algebra 1 did we. Always room for improvement, T Harness April 19
Topics: thingiverse, stl, grill, louvre, slits, Parts
4
4.0
Mar 15, 2021
03/21
by
OrangePiWeb JaviPSantos (OrangePiWeb)
data
eye 4
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Saeteras para Exin Castillos (no es Lego), abertura alta y estrecha en el muro de una fortificación por la que se disparaban saetas. An arrowslit is a narrow vertical aperture in a fortification through which an archer can launch arrows or a crossbowman can launch bolts.
Topics: saetera, exin, thingiverse, Buildings & Structures, castle, slits, castillo, arrow, windows,...
Journal of Research of the National Institute of Standards and Technology
Topics: diffraction, pseudo-vectorial theory, narrow slits, optics, polarization
121
121
Apr 5, 2020
04/20
by
The Slits
movies
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Music video, as broadcast on an episode of "rage", the ABC's late night music video show. Digital TV recording from ABC TV in Perth, Australia on the 16th of February, 2008. (Uploader note: publication dates on "rage" video uploads tend to refer to the music video itself rather than the particular episode of rage it was recorded from) Contains an introduction from The Gossip, who were guest programming this episode of rage (16/02/2008)
Topics: rage, ABC, music video, The Slits, The Gossip
sparrowsnest 9341
Topics: newmatics, ana, music, band, androids, sinatras, bands, songs, vocals, slits
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33
Jun 1, 2022
06/22
by
Albertine, Viv, 1954-
texts
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ix, 421 pages : 24 cm
Topics: Albertine, Viv, 1954-, Slits (Musical group), Punk rock musicians -- Great Britain -- Biography
Journal of Research of the National Institute of Standards and Technology
Topics: boundary value theory, scalar wave functions, circular apertures, diffraction, Kirchhoff, Rayleigh,...
192
192
May 23, 2011
05/11
by
Horack, John M.; Koshut, Thomas M.; Mallozzi, Robert S.; Emslie, A. Gordon; Meegan, Charles A
texts
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The distance scale to cosmic gamma-ray bursts (GRB's) is still uncertain by many orders of magnitude; however, one viable scenario places GRB's at cosmological distances, thereby permitting them to be used as tracers of the cosmological expansion over a significant range of redshifts zeta. Also, several recent measurements of the Hubble constant H(sub 0) appearing in the referred literature report values of 70-80 km/s /Mpc. Although there is significant debate regarding these measurements, we...
Topics: THIN FILMS, THICKNESS RATIO, INTERFACIAL TENSION, LIQUID FLOW, SLITS, STABILITY TESTS, SHEETS,...
467
467
May 23, 2011
05/11
by
Moulot, Jacques; Faur, Mircea; Faur, Maria; Goradia, Chandra; Goradia, Manju; Bailey, Sheil
texts
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It is well known that the behavior of III-V compound based solar cells is largely controlled by their surface, since the majority of light generated carriers (63% for GaAs and 79% for InP) are created within 0.2 micron of the illuminated surface of the cell. Consequently, the always observed high surface recombination velocity (SRV) on these cells is a serious limiting factor for their high efficiency performance, especially for those with the p-n junction made by either thermal diffusion or...
Topics: IMAGING SPECTROMETERS, BACKGROUND RADIATION, THERMAL RADIATION, ASTRONOMICAL SPECTROSCOPY, INDIUM...
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225
May 23, 2011
05/11
by
Liemohn, M. W.; Khazanov, G. V.; Moore, T. E.; Guiter, S. M
texts
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The effects of self-consistently including superthermal electrons in the definition of the ambipolar electric field are investigated for the case of plasmaspheric refilling after a geomagnetic storm. By using the total electron population in the hydrodynamic equations, a method for incorporating superthermal electron parameters in the electric field and electron temperature calculation is developed. Also, the ambipolar electric field is included in the kinetic equation for the superthermal...
Topics: MOLECULAR IONS, RADICALS, HIGH RESOLUTION, ABSORPTION SPECTROSCOPY, LASER SPECTROSCOPY, SLITS,...
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569
Jun 1, 2011
06/11
by
Ginsburg, Ambrose; Creagh, John W. R.; Ritter, William K
texts
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An investigation was conducted on a large centrifugal compressor from an experimental turbojet engine to determine the performance of the compressor and to obtain fundamental information on the aerodynamic problems associated with large centrifugal-type compressors. The results of the research conducted on the compressor indicated that the compressor would not meet the desired engine-design air-flow requirements (78 lb/sec) because of an air-flow restriction in the vaned collector (diffuser)....
Topics: RESONATORS, DIRECT NUMERICAL SIMULATION, FLOW DISTRIBUTION, SLITS, ACOUSTIC IMPEDANCE, WHITE NOISE,...
Tool produces slits of 0.0305 mm widths in materials up to RC 50 hardness, minimizes material waste and improves precision. Device may be used for general metal cutting and for producing simulated cracks in metal samples used in fatigue tests.
Topics: NASA Technical Reports Server (NTRS), CRACKS, CUTTING, FATIGUE TESTS, LUBRICANTS, MACHINE TOOLS,...
The present invention provides a light direction sensor for determining the direction of a light source. The system includes an image sensor; a spacer attached to the image sensor, and a pattern mask attached to said spacer. The pattern mask has a slit pattern that as light passes through the slit pattern it casts a diffraction pattern onto the image sensor. The method operates by receiving a beam of light onto a patterned mask, wherein the patterned mask as a plurality of a slit segments....
Topics: NASA Technical Reports Server (NTRS), LIGHT SOURCES, DIFFRACTION PATTERNS, SLITS, SPACERS,...
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200
May 22, 2011
05/11
by
Degennaro, Stephen V
texts
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Spoken language is the most convenient and natural means by which people interact with each other and is, therefore, a promising candidate for human-machine interactions. Speech also offers an additional channel for hands-busy applications, complementing the use of motor output channels for control. Current speech recognition systems vary considerably across a number of important characteristics, including vocabulary size, speaking mode, training requirements for new speakers, robustness to...
Topics: COHERENT RADIATION, COLLAPSE, WAVE FUNCTIONS, NONLINEAR OPTICS, NONLINEARITY, OPTICAL MEASUREMENT,...
Slits for imaging spectrometers can now be fabricated to a precision much greater than previously attainable. What makes this possible is a micromachining process that involves the use of microlithographic techniques.
Topics: NASA Technical Reports Server (NTRS), IMAGING SPECTROMETERS, MICROMACHINING, SLITS, FABRICATION,...
A dual acting control system for mass spectrometers is described, which permits adjustment of the collimating slit width and centering of the collimating slit while using only one vacuum penetration. Coaxial shafts, each with independent vacuum bellows are used to independently move the entire collimating assembly or to adjust the slit dimension through a parallelogram linkage.
Topics: NASA Technical Reports Server (NTRS), COLLIMATION, CONTROL EQUIPMENT, MASS SPECTROMETERS, SLITS,...
Electro-Expulsive Separation System, a low power electro-thermal deicer, was invented by Leonard A. Haslim from the Ames Research Center, who was named 1988 NASA Inventor of the Year for his work. Sold under license by Dataproducts New England, Inc., it consists of an elastic, rubber-like deicer boot on the wing's leading edge with copper ribbons embedded in it. Conductors are separated by slits in between and parallel to the ribbons. When the system is switched on, a bank of capacitors in the...
Topics: NASA Technical Reports Server (NTRS), DEICERS, AIRFOILS, FLIGHT SAFETY, ICE, SEPARATORS, EMBEDDING,...
Our purpose in examining this test problem is to measure directly the effect of mesh refinement and the resulting mesh interfaces on a known wave that is sensitive to phase errors, while concurrently being able to visually display a meaningful picture of the effects of the refinement induced error on the solution. The refined mesh must be able to adequately capture the diffraction behavior, so that the plane wave front bends as it passes through the slit. Given that the coarse and refined...
Topics: NASA Technical Reports Server (NTRS), DIFFRACTION, GRID GENERATION (MATHEMATICS), PHASE ERROR,...
An imaging spectrometer has fore-optics coupled to a spectral resolving system with an entrance slit extending in a first direction at an imaging location of the fore-optics for receiving the image, a convex diffraction grating for separating the image into a plurality of spectra of predetermined wavelength ranges; a spectrometer array for detecting the spectra; and at least one concave sperical mirror concentric with the diffraction grating for relaying the image from the entrance slit to the...
Topics: NASA Technical Reports Server (NTRS), CAMERAS, CONVEXITY, IMAGING SPECTROMETERS, IMAGING...
Sides of spatial filter slits are shaped so that their contribution to signal is reduced, thus minimizing the number of scanning errors.
Topics: NASA Technical Reports Server (NTRS), ALIGNMENT, DEFECTS, INTEGRATED CIRCUITS, OPTICAL FILTERS,...
Spectrographs have traditionally suffered from the inability to obtain line intensities, widths, and Doppler shifts over large spatial regions of the Sun quickly because of the narrow instantaneous field of view. This has limited the spectroscopic analysis of rapidly varying solar features like, flares, CME eruptions, coronal jets, and reconnection regions. Imagers have provided high time resolution images of the full Sun with limited spectral resolution. In this paper we present recent...
Topics: NASA Technical Reports Server (NTRS), SLITS, SPECTRA, SPECTROGRAPHS, SPECTROSCOPY, SUN, SOLAR...
The basic concept of an optical slit sensor as a standard altitude sensor is considered for any missions using a spinning spacecraft or where rotating sensors or mirrors could be used. Information available from a single sensor or from two sensors is analyzed. A standard slit sensor package is compared with the altitude package flown on the first synchronous meteorological satellite.
Topics: NASA Technical Reports Server (NTRS), OPTICAL SCANNERS, SATELLITE ATTITUDE CONTROL, SLITS, ATTITUDE...
An external flow, liquid sheet radiator apparatus adapted for space applications has as its radiating surface a thin stable liquid sheet formed by fluid flow through a very narrow slit affixed to the sheet generator. As a result of surface tension forces, the sheet has a triangular shape and is collected into a simply designed collector positioned at the apex of the triangle. The specific power for the liquid sheet is virtually the same as the droplet sheet specific power.
Topics: NASA Technical Reports Server (NTRS), FLUID FLOW, RADIANT COOLING, SPACECRAFT RADIATORS, THIN...
Two-phase choked flow rate and pressure distribution data are reported for subcooled nitrogen flowing through a slit. The slip was a narrow rectangular passage of equal length and width. The inlet stagnation pressure ranged from slightly above saturation to twice the thermodynamic critical pressure. Four stagnation isotherms were investigated covering a range which spanned the critical temperature. The results suggested a uniform two-phase flow pattern with vaporization occurring at or near the...
Topics: NASA Technical Reports Server (NTRS), FLOW VELOCITY, GAS FLOW, NITROGEN, PRESSURE DISTRIBUTION, TWO...
The basic concepts of influencing boundary layers are summarized, especially the prevention of flow detachment and the reduction of frictional resistance. A mathematical analysis of suction through a slit is presented with two parameters, for thickness and for shape of the boundary layer, being introduced to specify the flow's velocity profile behind the slit. An approximation of the shape parameter produces a useful formula, which can be used to determine the most favorable position of the...
Topics: NASA Technical Reports Server (NTRS), APPROXIMATION, BOUNDARY LAYERS, FRICTION REDUCTION, SLITS,...
Folkscanomy Electronics Articles: A Horizontally Polarized Omni-Directional Antenna
Topics: hsmm, slot, antenna, vertical, coax, slits, impedance, copper, length, tubing, vertical slot, water...
8
8.0
Jun 30, 2022
06/22
by
Albertine, Viv, 1954- author
texts
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ix, 421 pages : 24 cm
Topics: Albertine, Viv, 1954-, Slits (Musical group), Punk rock musicians -- Great Britain -- Biography,...
A hyperspectral imaging spectrometer was breadboarded. Key innovations were use of a sapphire prism and single InSb focal plane to cover the entire spectral range, and a novel slit optic and relay optics to reduce thermal background. Operation over a spectral range of 450 - 4950 nm (approximately 3.5 spectral octaves) was demonstrated. Thermal background reduction by a factor of 8 - 10 was also demonstrated.
Topics: NASA Technical Reports Server (NTRS), IMAGING SPECTROMETERS, BACKGROUND RADIATION, THERMAL...
Dennis Bovell's youthful exuberance belies a long and distinguished career taking in some surprisingly far-flung corners of the music industry. Responsible for more or less inventing the lovers rock sound with the three-part harmonies of Matumbi, Dennis went on to produce some of the defining records of British reggae. But as well as his work with artists like Linton Kwesi Johnson and Janet Kay, Dennis produced classic records with the Slits, rock band Orange Juice, afrobeat legend Fela Kuti,...
Topics: Youtube, video, Entertainment, “red bull music academy”, “red bull”, Dennis Bovell,...
A method is described for making a structure with a cavity and a thin wall with a precisely shaped slit. An object with a cavity having two openings, one of which is to be closed by a thin wall with a slit, is placed on the surface of a fixture. The fixture surface has a slot conforming to the size and shape of the slit to be formed in the thin wall.
Topics: NASA Technical Reports Server (NTRS), SLITS, THIN WALLS, CAVITIES, FABRICATION, SURFACE PROPERTIES,...
The Deformed Ellipsoidal Grating Blank (DEGB) is the primary component in an ultraviolet spectrometer. Since one of the major concerns for these instruments is throughput, significant efforts are made to reduce the number of components and subsequently reflections. Each reflection results in losses through absorption and scattering. It is these two sources of photon loss that dictated the requirements for the DEGB. The first goal is to shape the DEGB in such a way that the energy at the...
Topics: NASA Technical Reports Server (NTRS), GRATINGS (SPECTRA), LIGHT SCATTERING, ULTRAVIOLET REFLECTION,...
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12
Jan 13, 2021
01/21
by
Sean Goodman (amarand)
data
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It's one of the ten commandments! "Honour thy father and thy mother." I grabbed a more British version of that bible quote because I think the thees and thys are a little cooler, plus, you get honor with a "u!" Why did I quote the bible today, when I'm usually quoting my favorite video game? "We don't understand! You're totally not religious!" I know, but I don't believe any of Stephen King's books but I quote them too. The bible is a fantastic work of fiction - of...
Topics: custom, holder, Tool Holders & Boxes, block, screwdrivers, desk organizer, thingiverse, tools,...
The pseudoslit spectrometer is a conceptual optoelectronic instrument that would offer some of the advantages, without the disadvantages, of prior linear-variable etalon (LVE) spectrometers and prior slit spectrometers. The pseudoslit spectrometer is so named because it would not include a slit, but the combined effects of its optical components would include a spatial filtering effect approximately equivalent to that of a slit. Like a prior LVE spectrometer, the pseudoslit spectrometer would...
Topics: NASA Technical Reports Server (NTRS), OPTICAL EQUIPMENT, SPECTROMETERS, SLITS, FIELD OF VIEW,...
A spatially developing direct numerical simulation has been performed for flow over a flat plate that is subjected to a one-time fluid injection through an elongated slit in the wall. The flow parameters have been chosen to closely approximate the experimental conditions of Haidari, Taylow, and Smith (AIAA-89-0964). A hairpin vortex quickly develops near the upstream end of the slit, and a pair of necklace vortices form around the slow-moving injection fluid. As seen in the experiments and...
Topics: NASA Technical Reports Server (NTRS), HORSESHOE VORTICES, DIRECT NUMERICAL SIMULATION, BOUNDARY...
The core of the proposed work was to observe the lunar sodium atmosphere with our classical Lyot coronagraph and specially-built grating spectrograph on Mount Lemmon, a 9400-foot peak about an hour's drive from Tucson. It is optimized for low scattered light and for observing from the Moon's limb to an altitude of approx. 1 lunar radius. The grating has 600 lines/mm and a blaze angle of 49 deg, and is used with a somewhat wide slit at a resolving power of about 5000. It is called DARRK for the...
Topics: NASA Technical Reports Server (NTRS), CORONAGRAPHS, LUNAR ATMOSPHERE, SODIUM, DATA REDUCTION, CCD...
Many so called paradoxes of quantum mechanics are clarified when the measurement equipment is treated as a quantized system. Every measurement involves nonlinear processes. Self consistent formulations of nonlinear quantum optics are relatively simple. Hence optical measurements, such as the quantum nondemolition (QND) measurement of photon number, are particularly well suited for such a treatment. It shows that the so called 'collapse of the wave function' is not needed for the interpretation...
Topics: NASA Technical Reports Server (NTRS), COHERENT RADIATION, NONLINEAR OPTICS, NONLINEARITY, OPTICAL...
Long-slit spectra of two peripheral regions around the Crab Nebula show no H(alpha) emission down to a flux level of 1.5 x 10(exp -7)erg/sq cm s sr (0.63 Rayleigh), corresponding to an emission measure limit of 4.2 cm(sup - 6) pc (3(sigma)) assuming A(sub V)= 1.6(sup m) and T(sub e)=7000 K. This is below the flux levels reported by Murdin & Clark (Nature, 294, 543 (198 1)) for an H(alpha) halo around the Crab. Narrow H(beta) emission as described by Murdin (MNRAS, 269, 89 (1994)) is...
Topics: NASA Technical Reports Server (NTRS), OPTICAL MEASUREMENT, STELLAR ENVELOPES, CRAB NEBULA, SPECTRA,...
A hybrid photochemical-machining process is coupled with precision stack lamination to allow for the fabrication of multiple ultra-high-resolution grids on a single array substrate. In addition, special fixturing and etching techniques have been developed that allow higher-resolution multi-grid collimators to be fabricated. Building on past work of developing a manufacturing technique for fabricating multi-grid, high-resolution coating modulation collimators for arcsecond and subarcsecond x-ray...
Topics: NASA Technical Reports Server (NTRS), COLLIMATORS, FABRICATION, GAMMA RAYS, X RAY IMAGERY,...
Graphite-epoxy panels with S glass buffer strips were tested in tension and shear to measure their residual strengths with crack-like damage. The buffer strips were regularly spaced narrow strips of continuous S glass. Panels were made with a uniweave graphite cloth where the S glass buffer material was woven directly into the cloth. Panels were made with different width and thickness buffer strips. The panels were loaded to failure while remote strain, strain at the end of the slit, and crack...
Topics: NASA Technical Reports Server (NTRS), CRACK PROPAGATION, FRACTURE STRENGTH, GRAPHITE-EPOXY...
We report here, preliminary data from an experiment studying flow of superfluid helium through a slit orifice (of sub-micron width) very close to T(sub lambda). Critical supercurrent (I(sub c)) data is obtained from a step function drive to the diaphragm in a Helmholtz resonator cell. The superfluid density (rho(sub s)) data can be obtained from the resonant frequency of the Helmholtz oscillator, as determined by transfer function of the resonator or from the free ringing after the step...
Topics: NASA Technical Reports Server (NTRS), HYDRODYNAMICS, LIQUID HELIUM 2, SUPERFLUIDITY, PARALLEL FLOW,...
An analysis is given of the errors in Hadamard spectroscopy that are caused by transparent slits in the mask being systematically wider or else narrower than they should be. It is shown that if the input spectrum consists of a single line, the distorted spectrum that is actually calculated consists of this line, plus four small blips. When the transparent slits are too wide, these blips are of equal height and the same sign, one pair surrounding the line, and another pair displaced a certain...
Topics: NASA Technical Reports Server (NTRS), ERROR ANALYSIS, MASKS, SLITS, SPECTROMETERS, CALIBRATING,...
The high-resolution capabilities of the Interface Region Imaging Spectrometer (IRIS) mission have allowed the exploration of the finer details of the solar magnetic structure from the chromosphere to the lower corona that have previously been unresolved. Of particular interest to us are the relatively short-lived, low-lying magnetic loops that have foot points in neighboring moss regions. These inter-moss loops have also appeared in several AIA pass bands, which are generally associated with...
Topics: NASA Technical Reports Server (NTRS), LOOPS, SLITS, PIXELS, DETECTION, IRIS SATELLITES, SOLAR...
A tool has been developed for the special purpose of inserting the terminus of an optical fiber in a cable connector that conforms to NASA Specification SSQ- 21635. What prompted the development of the tool was the observation that because of some aspects of the designs of fiber-optic termini and of springs, sealing rings, and a grommet inside the shell of such a connector, there is a tendency for the grommet to become damaged and detached from the sealing rings during installation. It is...
Topics: NASA Technical Reports Server (NTRS), FIBER OPTICS, CONNECTORS, INSTALLING, TOOLS, PROTECTION,...
From P/Halley, long slit spectroscopic exposures on 12 dates, extending from Oct. 1985 to May 1986, spatial profiles were obtained for emissions by C2, CN, NH2, and OI ((sup 1)D). Examples of our derived spatial profiles are given. The qualitative trend of the scale lengths for the different species is nicely exemplified in this example. C2 has the longest parent scale length followed by CN and NH2. OI which tracks the parent H2O distribution is quite narrow but slightly wider than the...
Topics: NASA Technical Reports Server (NTRS), ABSORPTION SPECTROSCOPY, AMINO RADICAL, CYANOGEN, HALLEY'S...
High resolution spectra of the 11.3 micron emission band in M82 and NGC 7027 were obtained using the University of Texas IR echelle spectrometer on the IRTF in April 1988. The spectral resolution was 0.004 micron, with coverage from 11.0 to 11.6 microns. Spectra were measured at ten positions along a 10 min. long slit. Analysis of the data is still in progress, but initial results show no clear evidence of narrow structure within the feature. The analysis will involve comparison of the observed...
Topics: NASA Technical Reports Server (NTRS), EMISSION SPECTRA, HIGH RESOLUTION, HYDROCARBONS, SPECTRAL...
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780
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Topics: scientific, patent, barrel, american, apparatus, steam, device, tion, american supplement,...
Thin metal shutter that is forced into angled optical slit isolates spectrograph from high speed shock tube both optically and mechanically so neither radiation nor particulate material enters spectrograph.
Topics: NASA Technical Reports Server (NTRS), COMPENSATORS, COPPER, ELECTRIC PULSES, ELECTROMAGNETIC...
The objective of the study reported here was to acquire detailed acoustic data and limited and flow visualization data for numerical validation a new model of sound absorption by a very narrow rectangular slit backed by a cavity. The sound absorption model is being developed by Dr. C. K. W. Tam of Florida State University. This report documents normal incidence impedance measurements of a singular rectangular slit orifice with no mean flow. All impedance measurements are made within a 1.12 inch...
Topics: NASA Technical Reports Server (NTRS), CAVITIES, ORIFICES, SLITS, AMPLITUDES, ACOUSTIC ATTENUATION,...
