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Untitled - Sciencemadness Dot Org

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Estane<br />

EXON-461<br />

FEFO<br />

HNAB<br />

Bis-HNAB<br />

HNB<br />

HNBP<br />

Indices of :refraction<br />

Kel-F 800<br />

Kel-F 827<br />

LX-09<br />

LX-14<br />

MAN<br />

NC<br />

NONA<br />

A polyester polyurethane<br />

A fluorinated thermoplastic resin<br />

Bis( 1-fluoro-2,2-dinitroethyl) formal, C,H,N,O,,F,<br />

2,2’,4,4’,6,6’-Hexanitroazobenzene, C,2H,N,0,,<br />

2,2’,2”,2”‘,4,4’,4”,4”‘,6,6’,6”,6”’- Dodecanitro-3,3’-<br />

bis(phenylazo) biphenyl, C,,H,N,,02,<br />

Hexanitrobenzene, C,N,O,,<br />

2,2’,4,4’,6,6’-Hexanitrobiphenyl, C,2H,N,0,,<br />

The ratio of the velocity of light in two contrasting sub-<br />

stances is a constant and is called the refractive index. The<br />

absolute refractive index of a substance is its index with<br />

respect to a vacuum; this has practically the same value as<br />

the index against air. Solid crystalline materials are either<br />

isotropic or anisotropic. Isotropic materials have a single<br />

index of refraction. Anisotropic crystals of hexagonal or<br />

tetragonal systems exhibit, for monochromatic light<br />

vibrating parallel to the ‘c’ axis, a unique index of refrac-<br />

tion customarily symbolized as epsilon. For all vibrations<br />

directed at 90” to the ‘c’ axis the refractive indices all equal<br />

a common value symbolized as omega. Anisotropic biaxial<br />

crystals belong to the orthorhombic, monoclinic, or triclinic<br />

system and possess three significant indices of refraction<br />

symbolized as alpha, beta, and gamma.<br />

Chlorofluoroethylene polymers<br />

A high-explosive formulation developed by the Lawrence<br />

Livermore Laboratory consisting of 93 wt% HMX, 2.4 wt%<br />

FEFO, and 4.6 wt% DNPA<br />

A high-explosive formulation developed by the Lawrence<br />

Livermore Laboratory consisting of 95.5 wt% HMX and 4.5<br />

wt% Estane<br />

Methyl amine nitrate, CH,N,O,<br />

Nitrocellulose<br />

2,2’,2”,4,4’,4”,6,6’,6”-Nonanitroterphenyl, C,,H,N,O,,<br />

463

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