Results 111 to 120 of about 1,141 (166)
Traveling waves link human visual and frontal cortex during working memory-guided behavior. [PDF]
Proc Natl Acad Sci U S ALuo C, Ester EF.
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Thermography and Infrared Spectroscopy in the Detection of Periodontal Inflammation In Vivo: A Systematic Review. [PDF]
Diagnostics (Basel)Guetatlia HN +6 more
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Electroencephalography and Clinical Neurophysiology, 1958
Abstract An apparatus is described providing for continuous display of 20 frequencies with a time resolving power of one second approximately. The spectrogram is directly visible on a cathode ray tube and is photographically recorded with another cathode ray tube. Spectrograms of various test signals are shown.
Bekkering, D.H. +2 more
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Abstract An apparatus is described providing for continuous display of 20 frequencies with a time resolving power of one second approximately. The spectrogram is directly visible on a cathode ray tube and is photographically recorded with another cathode ray tube. Spectrograms of various test signals are shown.
Bekkering, D.H. +2 more
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Applied Optics, 1977
A novel class of geometric optical configurations for diffraction grating spectrographs is introduced. The concentric configurations offer appreciable advantages over traditional arrangements. Excellent image quality at high numerical aperture is demonstrated experimentally.
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A novel class of geometric optical configurations for diffraction grating spectrographs is introduced. The concentric configurations offer appreciable advantages over traditional arrangements. Excellent image quality at high numerical aperture is demonstrated experimentally.
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An Electrostatic Beta-Spectrograph
Review of Scientific Instruments, 1950A beta-ray spectrograph has been constructed in which electrons move radially outward against a retarding electric field, and the current due to those electrons having more than any given energy is measured. Momentum resolution is one-third percent. The insensitivity of current collection, as compared to single particle detection, is compensated by a ...
D R, HAMILTON, L, GROSS
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The spectrograph units for the HARMONI integral field spectrograph
SPIE Proceedings, 2014The spectrograph sub-system is responsible for dispersing the light from the slicer with the required spectral resolving power and imaging the spectra on to a detector. Each image slicer creates a single exit slit feeding a single spectrograph unit containing visible (VIS) and infrared (IR) cameras.
Kieran O'Brien +7 more
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Applied Optics, 1978
The details of a new design of a fisheye field spectrograph are presented together with performance studies on the prototype. Spectra of different sources together with the microphotometer tracings for the spectra of skylight are given. Details of the calibration are also discussed. The condition for negligible astigmatism, achieved experimentally, has
G, Remus, V D, Sastri
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The details of a new design of a fisheye field spectrograph are presented together with performance studies on the prototype. Spectra of different sources together with the microphotometer tracings for the spectra of skylight are given. Details of the calibration are also discussed. The condition for negligible astigmatism, achieved experimentally, has
G, Remus, V D, Sastri
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Physics Today, 1950
A simple oscillating circuit for detecting nuclear magnetic resonance absorption has been developed that makes use of an electronic negative resistance to maintain oscillation.
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A simple oscillating circuit for detecting nuclear magnetic resonance absorption has been developed that makes use of an electronic negative resistance to maintain oscillation.
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Applied Optics, 1993
In this paper the optical system design of one of the spectrograph instruments to be employed in the General Excitation Mechanisms in Nightglow project is described. The instrument has a high throughput with a numerical aperture equivalent to ƒ/1.7 and covers the spectral range from 255 to 327.5 nm. A 3-deg line in the object space is imaged onto a two-
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In this paper the optical system design of one of the spectrograph instruments to be employed in the General Excitation Mechanisms in Nightglow project is described. The instrument has a high throughput with a numerical aperture equivalent to ƒ/1.7 and covers the spectral range from 255 to 327.5 nm. A 3-deg line in the object space is imaged onto a two-
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Grazing-incidence spectrograph
Applied Optics, 1994A novel compact spectrograph, based on double diffraction by a strip-shaped grating at a grazing angle combined with a tuning mirror, is theoretically discussed. In this configuration the emerging light illuminates a large number of grooves, leading to high spectral resolution.
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