doorgaan naar inhoud
Research on triplet states and photochromism for flash-blindness protection. Voorbeeldweergave van dit item
SluitenVoorbeeldweergave van dit item
Bezig met controle...

Research on triplet states and photochromism for flash-blindness protection.

Auteur: Maurice W Windsor; W R Dawson; R S Moore; D Weber; TRW SYSTEMS REDONDO BEACH CALIF CHEMICAL SCIENCES Dept.
Uitgever: Ft. Belvoir Defense Technical Information Center 30 APR 1965.
Editie/Formaat:   Boek : EngelsAlle edities en materiaalsoorten bekijken.
Database:WorldCat
Samenvatting:
A normally transparent screen is needed that can be darkened quickly enough to protect the eyes of combat pilots who may be exposed to flashes from nuclear explosions. Strong absorption of visible light from the lowest triplet level of selected aromatic compounds is a promising basis for development of the required screen for prevention of flashblindness. This triplet absorption, which may be induced by absorption  Meer lezen...
Beoordeling:

(nog niet beoordeeld) 0 met beoordelingen - U bent de eerste

Onderwerpen
Meer in deze trant

 

Zoeken naar een in de bibliotheek beschikbaar exemplaar

&AllPage.SpinnerRetrieving; Bibliotheken met dit item worden gezocht…

Details

Soort document: Boek
Alle auteurs / medewerkers: Maurice W Windsor; W R Dawson; R S Moore; D Weber; TRW SYSTEMS REDONDO BEACH CALIF CHEMICAL SCIENCES Dept.
OCLC-nummer: 227340108
Beschrijving: 72 pages

Fragment:

A normally transparent screen is needed that can be darkened quickly enough to protect the eyes of combat pilots who may be exposed to flashes from nuclear explosions. Strong absorption of visible light from the lowest triplet level of selected aromatic compounds is a promising basis for development of the required screen for prevention of flashblindness. This triplet absorption, which may be induced by absorption of ultraviolet light from microsecond flash lamps, decays in a few seconds so that transparency is spontaneously restored. A method of measuring extinction coefficients of triplet absorption and quantum yields of triplet formation has been developed. Combinations of aromatic compounds giving strong triplet absorption of visible light over the visible spectrum with minimized excitation energy are selected on the basis of these results. Two promising compounds have been synthesized. New plastics having greater solubility for large aromatic molecules than polymethylmethacrylate have been found. A method of making large sheets of polymethymethacrylate with exceptionally high transparency to ultraviolet is described. Deleterious effects of exposure of plastics, with and without aromatic solutes, to oxygen and sunlight have been studied. It was shown that diffusion of oxygen into the plastic sheets may be greatly reduced by a polyvinyl-alcohol coating. The application of these experimental results to the design of a protection device against flashblindness is discussed. (Author).

Beoordelingen

Beoordelingen door gebruikers
Beoordelingen van GoodReads worden opgehaald...
Bezig met opvragen DOGObooks-reviews...

Tags

U bent de eerste.
Bevestig deze aanvraag

Misschien heeft u dit item reeds aangevraagd. Selecteer a.u.b. Ok als u toch wilt doorgaan met deze aanvraag.

Gekoppelde data


<http://www.worldcat.org/oclc/227340108>
library:oclcnum"227340108"
library:placeOfPublication
library:placeOfPublication
owl:sameAs<info:oclcnum/227340108>
rdf:typeschema:Book
rdfs:seeAlso
schema:about
schema:about
schema:about
schema:about
schema:about
schema:about
schema:about
schema:about
schema:about
schema:contributor
schema:contributor
schema:contributor
rdf:typeschema:Organization
schema:name"TRW SYSTEMS REDONDO BEACH CALIF CHEMICAL SCIENCES Dept."
schema:contributor
schema:contributor
schema:datePublished"30 APR 1965"
schema:datePublished"1965"
schema:description"A normally transparent screen is needed that can be darkened quickly enough to protect the eyes of combat pilots who may be exposed to flashes from nuclear explosions. Strong absorption of visible light from the lowest triplet level of selected aromatic compounds is a promising basis for development of the required screen for prevention of flashblindness. This triplet absorption, which may be induced by absorption of ultraviolet light from microsecond flash lamps, decays in a few seconds so that transparency is spontaneously restored. A method of measuring extinction coefficients of triplet absorption and quantum yields of triplet formation has been developed. Combinations of aromatic compounds giving strong triplet absorption of visible light over the visible spectrum with minimized excitation energy are selected on the basis of these results. Two promising compounds have been synthesized. New plastics having greater solubility for large aromatic molecules than polymethylmethacrylate have been found. A method of making large sheets of polymethymethacrylate with exceptionally high transparency to ultraviolet is described. Deleterious effects of exposure of plastics, with and without aromatic solutes, to oxygen and sunlight have been studied. It was shown that diffusion of oxygen into the plastic sheets may be greatly reduced by a polyvinyl-alcohol coating. The application of these experimental results to the design of a protection device against flashblindness is discussed. (Author)."
schema:exampleOfWork<http://worldcat.org/entity/work/id/766625560>
schema:inLanguage"en"
schema:name"Research on triplet states and photochromism for flash-blindness protection."
schema:publisher
rdf:typeschema:Organization
schema:name"Defense Technical Information Center"

Content-negotiable representations

Venster sluiten

Meld u aan bij WorldCat 

Heeft u geen account? U kunt eenvoudig een nieuwe gratis account aanmaken.