Main information:
Product name:ZAMAK COFFIN DECORATION
Other names: Zamak screw, Coffin lid screw
Model: D005
Brand: B&R
Application: European style coffin
Origin: China
Manufacturer: Sumer International (Beijing) Trading Co.,Ltd
Product detail:
Size: 2.6*9 cm
Material: Zamak (Zinc alloy)
Color: Gold, Silver or Bronze (Optional)
Attached on coffin by screw
MOQ:2000 pcs
Packing: Carton
Main feature:
Professionally engaged in funeral field over 10 years;
Customized products acceptable;
Good quality and competitive price;
More Information:
Orientation
Historically, Christian burials were made supine east-west, with
the head at the western end of the grave. This mirrors the layout
of Christian churches, and for much the same reason; to view the
coming of Christ on Judgment day (Eschaton). In many Christian
traditions, ordained clergy are traditionally buried in the
opposite orientation, and their coffins carried likewise, so that
at the General Resurrection they may rise facing, and ready to
minister to, their people.
In Islam, the grave should be aligned perpendicular to the Qibla
(i.e. Mecca) and the face turned to the right and facing Qibla.
Inverted burial
For humans, maintaining an upside down position, with the head
vertically below the feet, is highly uncomfortable for any extended
period of time, and consequently burial in that attitude (as
opposed to attitudes of rest or watchfulness, as above) is highly
unusual and generally symbolic. Occasionally suicides and assassins
were buried upside down, as a post-mortem punishment and (as with
burial at cross-roads) to inhibit the activities of the resulting
undead.
In Gulliver's Travels, the Lilliputians buried their dead upside
down:
They bury their dead with their heads directly downward, because
they hold an opinion, that in eleven thousand moons they are all to
rise again; in which period the earth (which they conceive to be
flat) will turn upside down, and by this means they shall, at their
resurrection, be found ready standing on their feet. The learned
among them confess the absurdity of this doctrine; but the practice
still continues, in compliance to the vulgar.
— Jonathan Swift, Gulliver's Travels, Part I, Chapter VI
Swift's notion of inverted burial might seem the highest flight of
fancy, but it appears that among English millenarians the idea that
the world would be "turned upside down" at the Apocalypse enjoyed
some currency. There is at least one attested case of a person
being buried upside down by instruction; a Major Peter Labilliere
of Dorking(d. 4 June 1800) lies thus upon the summit of Box Hill.
Similar stories have attached themselves to other noted eccentrics,
particularly in southern England, but not always with a foundation
in truth.
| General properties |
| Name, symbol | zinc, Zn |
| Pronunciation | /ˈzɪŋk/
zingk |
| Appearance | silver-gray |
|
| Zinc in the periodic table |
|
| Atomic number (Z) | 30 |
| Group, block | group 12, d-block |
| Period | period 4 |
| Element
category | transition metal, alternatively considered a post-transition metal |
| Standard atomic
weight (±) (Ar) | 65.38(2) |
| Electron
configuration | [Ar] 3d10 4s2 |
| Electrons per shell | 2, 8, 18, 2 |
| Physical properties |
| Phase | solid |
| Melting point | 692.68 K (419.53 °C, 787.15 °F) |
| Boiling point | 1180 K (907 °C, 1665 °F) |
| Density near r.t. | 7.14 g/cm3 |
| when liquid, at m.p. | 6.57 g/cm3 |
| Heat of fusion | 7.32 kJ/mol |
| Heat of
vaporization | 115 kJ/mol |
| Molar heat capacity | 25.470 J/(mol·K) |
Vapor pressure | P (Pa) | 1 | 10 | 100 | 1 k | 10 k | 100 k | | at T (K) | 610 | 670 | 750 | 852 | 990 | 1179 |
|
| Atomic properties |
| Oxidation states | -2, 0, +1, +2 (anamphoteric oxide) |
| Electronegativity | Pauling scale: 1.65 |
| Ionization energies | 1st: 906.4 kJ/mol
2nd: 1733.3 kJ/mol
3rd: 3833 kJ/mol
(more) |
| Atomic radius | empirical: 134 pm |
| Covalent radius | 122±4 pm |
| Van der Waals radius | 139 pm |
| Miscellanea |
| Crystal structure | hexagonal close-packed (hcp) |
| Speed of soundthin rod | 3850 m/s (at r.t.) (rolled) |
| Thermal
expansion | 30.2 µm/(m·K) (at 25 °C) |
| Thermal conductivity | 116 W/(m·K) |
| Electrical
resistivity | 59.0 nΩ·m (at 20 °C) |
| Magnetic ordering | diamagnetic |
| Magnetic
susceptibility(χmol) | −11.4·10−6 cm3/mol (298 K) |
| Young's modulus | 108 GPa |
| Shear modulus | 43 GPa |
| Bulk modulus | 70 GPa |
| Poisson ratio | 0.25 |
| Mohs
hardness | 2.5 |
| Brinell hardness | 327–412 MPa |
| CAS Number | 7440-66-6 |
| History |
| Discovery | Indian
metallurgists(before 1000 BCE) |
| First isolation | Andreas Sigismund Marggraf (1746) |
| Recognized as a unique metal by | Rasaratna Samuccaya(800) |
| Most stable isotopes of zinc |
| iso | NA | half-life | DM | DE (MeV) | DP | | 64Zn | 49.2% | is stable with 34 neutrons | | 65Zn | syn | 244 d | ε | 1.3519 | 65Cu | | γ | 1.1155 | – | | 66Zn | 27.7% | is stable with 36 neutrons | | 67Zn | 4.0% | is stable with 37 neutrons | | 68Zn | 18.5% | is stable with 38 neutrons | | 69Zn | syn | 56 min | β− | 0.906 | 69Ga | | 69mZn | syn | 13.8 h | β− | 0.906 | 69Ga | | 70Zn | 0.6% | is stable with 40 neutrons | | 71Zn | syn | 2.4 min | β− | 2.82 | 71Ga | | 71mZn | syn | 4 d | β− | 2.82 | 71Ga | | 72Zn | syn | 46.5 h | β− | 0.458 | 72Ga |
|
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