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Thursday, May 7, 2020 | History

1 edition of Optical radiation emissions from selected sources found in the catalog.

Optical radiation emissions from selected sources

Optical radiation emissions from selected sources

  • 320 Want to read
  • 16 Currently reading

Published by U.S. Dept. of Health and Human Services, Public Health Service, Food and Drug Administration, Center for Devices and Radiological Health in Rockville, Md .
Written in English

    Subjects:
  • Fluorescent lamps,
  • Electric lighting, Mercury vapor,
  • Radiation -- Measurement

  • Edition Notes

    Other titlesHigh intensity discharge lamps
    SeriesHHS publication -- FDA 81-8136, HHS publication -- FDA 85-8236, DHHS publication -- no. (FDA) 85-8236, DHHS publication -- no. (FDA) 81-8136
    ContributionsMohan, Kishitij, Center for Devices and Radiological Health (U.S.), United States. Bureau of Radiological Health.
    The Physical Object
    Paginationv :
    ID Numbers
    Open LibraryOL14270143M

    In the figure at right, CUVOB stands for the cosmic ultraviolet and optical background. The diffuse extragalactic background light (EBL) is all the accumulated radiation in the Universe due to star formation processes, plus a contribution from active galactic nuclei (AGNs). This radiation covers the wavelength range between ~ microns (these are the ultraviolet, optical, and infrared. Emissions come principally from three automotive sources: the exhaust, the fuel system (evaporative), and crankcase ventilation gases. To give the standard (maximum allowable level of emission in grams per mile) operational meaning, two major aspects must be defined: the driving cycle and the emissions sampling method.

    Estimated values of the source and receiver characteristics necessary for implementation of optical communication on scattered radiation in the atmosphere. M. V. Tarasenkov, E. S. Poznaharev, V. V. Belov. Proc. SPIE , 25th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics, (18 December ); doi: Use the Stored Emissions Files in Logger Pro. Logger Pro contains a folder of emissions graphs from selected discharge tubes, including: argon, helium, hydrogen, mercury, oxygen, sodium, and xenon. You can display and analyze these graphs without a spectrometer connected to your computer.

      Radiation reaching the monochromator comes from three sources: (1) attenuated beam from the HCL (specific emission), (2) emission from sample atoms (including both analyte and non-analyte atoms) that were excited by the flame (nonspecific emission), and (3) radiation resulting from the combustion of the fuel to create the flame (nonspecific Cited by: 3. Nuclear winter is a severe and prolonged global climatic cooling effect hypothesized to occur after widespread firestorms following a nuclear war. The hypothesis is based on the fact that such fires can inject soot into the stratosphere, where it can block some direct sunlight from reaching the surface of the Earth. It is speculated that the resulting cooling would lead to widespread crop.


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Optical radiation emissions from selected sources Download PDF EPUB FB2

Optical radiation emissions from selected sources. Rockville, Md.: U.S. Dept. of Health and Human Services, Public Health Service, Food and Drug Administration, Center for Devices and Radiological Health, (OCoLC) Material Type: Government publication, National government publication: Document Type: Book: All Authors / Contributors.

Get this from a library. Optical radiation emissions from selected sources. Part I, Quartz halogen and fluorescent lamps. [Kshitij Mohan; United States. Bureau of Radiological Health.;]. This book analyzes existing, real-life radiation results from survivors of Hiroshima and Nagasaki, Chernobyl and Fukushima, and examines studies of radiation effect on patients, radiologists, crews of long-distant flights and astronauts, on miners of uranium copies, on workers of nuclear industry and on militaries, exposed to ionizing radiation.

measurement and assessment of personal exposures to incoherent optical radiation - part 2: visible and infrared radiation emitted by artificial sources in the workplace EN MEASUREMENT AND ASSESSMENT OF PERSONAL EXPOSURES TO INCOHERENT OPTICAL RADIATION - PART 4: TERMINOLOGY AND QUANTITIES USED IN UV- VISIBLE AND IR-EXPOSURE.

Author(s): Mohan,Kshitij,; United States. Bureau of Radiological Health. Title(s): Optical radiation emissions from selected sources. A laser is a device that emits light through a process of optical amplification based on the stimulated emission of electromagnetic term "laser" originated as an acronym for "light amplification by stimulated emission of radiation".

The first laser was built in by Theodore H. Maiman at Hughes Research Laboratories, based on theoretical work by Charles Hard Townes and Arthur. Optical Radiation Sources: For FAAS and FAES, the wavelengths of interest are in the UV and visible range.

There are three basic types of radiation sources that are utilized in these instruments: continuous sources, line sources, and laser sources. A continuous source, also referred to as a. It was as early as that Einstein first predicted the existence of two different kinds of processes by which an atom can emit radiation; these are called spontaneous and stimulated emissions.

The fact that the stimulated emission process could be used in the construction of coherent optical sources was first put forward by Townes and. Aerosol particles in the atmosphere are produced both in nature and by people.

A global aerosol optical depth of about is suggested. These aerosols increase the reflected solar radiation at the top of the atmosphere by about 3 W m −2 globally. Anthropogenic sources contribute significantly to the global aerosol optical depth. @article{osti_, title = {Greenhouse effect}, author = {Bolin, B and Doos, B R}, abstractNote = {The authors analyze the problems of increasing atmospheric carbon dioxide concentrations in the Earth's atmosphere and the possible future climatic changes which may ensue.

They consider such issues as the quantity of CO2 likely to be released into the atmosphere as a result of fossil fuel. There are still many scientific questions concerning multiscale and multiphysics phenomena that govern the emissions, transport, and fate of pollutants in the atmosphere.

This Special Issue is devoted to research that aims to improve our understanding of physical mechanisms controlling emissions, transport, and deposition of airborne pollutants. Optics is the branch of physics that studies the behaviour and properties of light, including its interactions with matter and the construction of instruments that use or detect it.

Optics usually describes the behaviour of visible, ultraviolet, and infrared light. Because light is an electromagnetic wave, other forms of electromagnetic radiation such as X-rays, microwaves, and radio waves. The word "laser" is an acronym for Light Amplification by Stimulated Emission of Radiation.

Lasers are finding ever increasing military applications -- principally for target acquisition, fire control, and training. These lasers are termed rangefinders, target designators, and direct-fire simulators. Emission definition is - an act or instance of emitting: emanation.

How to use emission in a sentence. measurement and assessment of personal exposures to incoherent optical radiation - part 2: visible and infrared radiation emitted by artificial sources in the workplace: bs en safety of machinery - visual danger signals - general requirements, design and testing: bs en iso The receiving nanoantenna is a device effectively converting incident light (optical frequency radiation) into a strongly confined field.

Conversely, the transmitting antenna converts the strongly confined field in the optical frequency range created by a certain (weakly emitting or.

If the CO2 effect was saturated, adding more CO2 should add no additional greenhouse effect. However, satellite and surface measurements observe an enhanced greenhouse effect at the wavelengths that CO2 absorb energy.

This is empirical proof that the CO2 effect is not saturated. Selected Publications. Book Series. Mitra, K., and Miller, Assessment of Signals Resulting from A Human Tissue Phantom Subjected to Radiation Sources of Temporal Spans of the Order of A Nano- a Pico- and a Femto-Second – A numerical Study.

Experimental Simulation of Lightning Optical Emissions in Clouds. Journal of Physics D: Applied. Some key examples that are explored in detail in this book include scanners based on positron emission tomography, as well as radiation therapy for cancer treatment.

Even the collaborative model of particle physics is proving to be effective in catalysing multidisciplinary research for medical applications, ensuring that pioneering physics. Spectroscopy / s p ɛ k ˈ t r ɒ s k ə p i / is the study of the interaction between matter and electromagnetic radiation (via electron spectroscopy, atomic spectroscopy, etc).

Historically, spectroscopy originated through the study of visible light dispersed according to its wavelength, by a the concept was expanded greatly to include any interaction with radiative energy as a.

The selected sites concerned inland/central and southern Italy, including urban, peri-urban, rural and coastal settings. The seasonal and site-specific particulate matter (PM) variations were analyzed outdoors and indoors, by estimating the impact of the main macro-sources and the contribution of the macro- and micro-components.Black-body radiation is the thermal electromagnetic radiation within or surrounding a body in thermodynamic equilibrium with its environment, emitted by a black body (an idealized opaque, non-reflective body).

It has a specific spectrum of wavelengths, inversely related to intensity that depend only on the body's temperature, which is assumed for the sake of calculations and theory to be.An aurora (plural: auroras or aurorae), sometimes referred to as polar lights, northern lights (aurora borealis), or southern lights (aurora australis), is a natural light display in the Earth's sky, predominantly seen in the high-latitude regions (around the Arctic and Antarctic).

Auroras are the result of disturbances in the magnetosphere caused by solar wind.