Definition of Amorphous. Meaning of Amorphous. Synonyms of Amorphous
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Definition of Amorphous
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Amorphous sulphurSulphur Sul"phur, n. [L., better sulfur: cf. F. soufre.]
1. (Chem.) A nonmetallic element occurring naturally in large
quantities, either combined as in the sulphides (as
pyrites) and sulphates (as gypsum), or native in volcanic
regions, in vast beds mixed with gypsum and various earthy
materials, from which it is melted out. Symbol S. Atomic
weight 32. The specific gravity of ordinary octohedral
sulphur is 2.05; of prismatic sulphur, 1.96.
Note: It is purified by distillation, and is obtained as a
lemon-yellow powder (by sublimation), called flour, or
flowers, of sulphur, or in cast sticks called roll
sulphur, or brimstone. It burns with a blue flame and a
peculiar suffocating odor. It is an ingredient of
gunpowder, is used on friction matches, and in medicine
(as a laxative and insecticide), but its chief use is
in the manufacture of sulphuric acid. Sulphur can be
obtained in two crystalline modifications, in
orthorhombic octahedra, or in monoclinic prisms, the
former of which is the more stable at ordinary
temperatures. Sulphur is the type, in its chemical
relations, of a group of elements, including selenium
and tellurium, called collectively the sulphur group,
or family. In many respects sulphur resembles oxygen.
2. (Zo["o]l.) Any one of numerous species of yellow or orange
butterflies of the subfamily Pierin[ae]; as, the clouded
sulphur (Eurymus, or Colias, philodice), which is the
common yellow butterfly of the Eastern United States.
Amorphous sulphur (Chem.), an elastic variety of sulphur of
a resinous appearance, obtained by pouring melted sulphur
into water. On standing, it passes back into a brittle
Liver of sulphur. (Old Chem.) See Hepar.
Sulphur acid. (Chem.) See Sulphacid.
Sulphur alcohol. (Chem.) See Mercaptan.
Sulphur auratum [L.] (Old Chem.), a golden yellow powder,
consisting of antimonic sulphide, Sb2S5, -- formerly a
Sulphur base (Chem.), an alkaline sulphide capable of
acting as a base in the formation of sulphur salts
according to the old dual theory of salts. [Archaic]
Sulphur dioxide (Chem.), a colorless gas, SO2, of a
pungent, suffocating odor, produced by the burning of
sulphur. It is employed chiefly in the production of
sulphuric acid, and as a reagent in bleaching; -- called
also sulphurous anhydride, and formerly sulphurous
Sulphur ether (Chem.), a sulphide of hydrocarbon radicals,
formed like the ordinary ethers, which are oxides, but
with sulphur in the place of oxygen.
Sulphur salt (Chem.), a salt of a sulphacid; a sulphosalt.
Sulphur showers, showers of yellow pollen, resembling
sulphur in appearance, often carried from pine forests by
the wind to a great distance.
Sulphur trioxide (Chem.), a white crystalline solid, SO3,
obtained by oxidation of sulphur dioxide. It dissolves in
water with a hissing noise and the production of heat,
forming sulphuric acid, and is employed as a dehydrating
agent. Called also sulphuric anhydride, and formerly
Sulphur whale. (Zo["o]l.) See Sulphur-bottom.
Vegetable sulphur (Bot.), lycopodium powder. See under
Paramorphous Par`a*mor"phous, a. (Min.)
Relating to paramorphism; exhibiting paramorphism.
Red or AmorphousPhosphorus Phos"phor*us, n.; pl. Phosphori. [L., the morning
star, Gr. ?, lit., light bringer; ? light + ? to bring.]
1. The morning star; Phosphor.
2. (Chem.) A poisonous nonmetallic element of the nitrogen
group, obtained as a white, or yellowish, translucent waxy
substance, having a characteristic disagreeable smell. It
is very active chemically, must be preserved under water,
and unites with oxygen even at ordinary temperatures,
giving a faint glow, -- whence its name. It always occurs
compined, usually in phosphates, as in the mineral
apatite, in bones, etc. It is used in the composition on
the tips of friction matches, and for many other purposes.
The molecule contains four atoms. Symbol P. Atomic weight
3. (Chem.) Hence, any substance which shines in the dark like
phosphorus, as certain phosphorescent bodies.
Bologna phosphorus (Chem.), sulphide of barium, which
shines in the dark after exposure to light; -- so called
because this property was discovered by a resident of
Bologna. The term is sometimes applied to other compounds
having similar properties.
Metallic phosphorus (Chem.), an allotropic modification of
phosphorus, obtained as a gray metallic crystalline
substance, having very inert chemical properties. It is
obtained by heating ordinary phosphorus in a closed vessel
at a high temperature.
Phosphorus disease (Med.), a disease common among workers
in phosphorus, giving rise to necrosis of the jawbone, and
Red, or Amorphous, phosphorus (Chem.), an allotropic
modification of phosphorus, obtained as a dark red powder
by heating ordinary phosphorus in closed vessels. It is
not poisonous, is not phosphorescent, and is only
moderately active chemically. It is valuable as a chemical
reagent, and is used in the composition of the friction
surface on which safety matches are ignited.
Solar phosphori (Chem.), phosphorescent substances which
shine in the dark after exposure to the sunlight or other
Meaning of Amorphous from wikipedia
- In condensed matter physics
science, an amorphous
(from the Gr**** a, without, morphé, shape, form) or non-crystalline solid
is a solid
- Amorphous silicon
(a-Si) is the non-crystalline form of silicon
used for solar cells
and thin-film transistors
in LCDs. Used as semiconductor
- An amorphous metal
gl**** or gl****y metal) is a solid metallic
an alloy, with disordered
diseases, such as lupus
of amorphous silicon
dioxide, in high doses, leads
to non-permanent short-term inflammation...
ice (non-crystalline or "vitreous" ice) is an amorphous solid
form of water. Common
ice is a crystalline material wherein
- Amorphous carbon
is free, reactive carbon
that does not have any crystalline
structure. Amorphous carbon materials
may be stabilized
- Amorphous computing refers
to com****tional systems
that use very large numbers
of identical, parallel processors
each having limited
- third category
have no periodic structure
of amorphous solids include
gl****, wax, and...
such a disordered structure
and readily convert
solids. In other
polymers, the chains rearrange
- semi-crystalline or amorphous
. Semi-crystalline polymers
can undergo crystallization
transitions, whereas amorphous polymers
do not. In polymers...
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