Thursday, September 15, 2011

BAHAS TOTAL

Bukan rahasia lagi kalau materi pelajaran eksak (Matematika, Fisika, Biologi, Kimia) masih menjadi hal yang menakutkan bagi sebagian besar siswa. Padahal kalau kita paham materi pelajarannya, hal itu tidak akan terjadi. 


Dalam buku ini disajikan materi singkat yang mempermudah siswa memahaminya dan disertai dengan berbagai macam jenis soal dan pembahasan dengan tingkat kesulitan yang beragam yang akan melatih siswa dalam memahami dan mengerjakan soal yang dihadapi dalam ujian.

Saturday, April 30, 2011

Jenis batu mulia dan kekerasannya

Gemstone NameSpecific GravityMohs HardnessIndex of RefractionGemstone Family
Achorite3.03 - 3.257.0 - 7.5 Mohs1.610-1.661Tourmaline
Agate2.657.0 Mohs1.530 - 1.550Quartz
Alexandrite3.68 - 3.788.5 Mohs1.746 - 1.755Chrysoberyl
Almandine3.50 - 4.306.5 - 7.5 Mohs1.750 - 1.830Garnet
Almandine Spinel3.58 - 4.068.0 Mohs1.708 - 1.735Spinel
Almandine-Spessartine3.50 - 4.306.5 - 7.5 Mohs1.750 - 1.830Garnet
Amazonite2.55 - 2.766.0 - 6.5 Mohs1.518 - 1.526Feldspar
Amethyst2.657.0 Mohs1.532 - 1.554Quartz
Andradite3.50 - 4.306.5 - 7.5 Mohs1.880 - 1.940Garnet
Aquamarine2.63 - 2.917.5 - 8.0 Mohs1.567-1.590Beryl
Balas Ruby3.58 - 4.068.0 Mohs1.708 - 1.735Spinel
Black Opal1.98 - 2.255.5 - 6.5 Mohs1.440 - 1.460Opal
Bloodstone2.657.0 Mohs1.535 - 1.539Quartz
Brazilian Emerald3.03 - 3.257.0 - 7.5 Mohs1.610 - 1.640Tourmaline
Cairngorm2.657.0 Mohs1.540 - 1.550Quartz
Carnelian2.657.0 Mohs1.530 - 1.550Quartz
Cat's Eye3.68 - 3.788.5 Mohs1.746 - 1.755Chrysoberyl
Chalcedony2.657.0 Mohs1.544 - 1.553Quartz
Chlorspinel3.58 - 4.068.0 Mohs1.712 - 1.717Spinel
Chrome Pyrope3.50 - 4.306.5 - 7.5 Mohs1.730 - 1.760Garnet
Chrysoberyl3.68 - 3.788.5 Mohs1.746 - 1.755Chrysoberyl
Chrysoprase2.657.0 Mohs1.530 - 1.550Quartz
Citrine2.657.0 Mohs1.532 - 1.554Quartz
Color-Change Garnet3.50 - 4.306.5 - 7.5 Mohs1.730 - 1.760Garnet
Demantoid3.50 - 4.306.5 - 7.5 Mohs1.880 - 1.900Garnet
Diamond3.5110 Mohs2.417Diamond
Dravite3.03 - 3.257.0 - 7.5 Mohs1.610-1.661Tourmaline
Emerald2.63 - 2.917.5 - 8.0 Mohs1.560 - 1.605Beryl
Feldspar2.55 - 2.766.0 - 6.5 Mohs1.518 - 1.572Feldspar
Fire Opal1.98 - 2.255.5 - 6.5 Mohs1.430 - 1.460Opal
Garnet3.50 - 4.306.5 - 7.5 Mohs1.730 - 1.760Garnet
Ghanospinel3.58 - 4.068.0 Mohs1.712 - 1.747Spinel
Goshenite2.63 - 2.917.5 - 8.0 Mohs1.570 - 1.600Beryl
Green Quartz2.657.0 Mohs1.540-1.550Quartz
Grossular3.50 - 4.306.5 - 7.5 Mohs1.880 - 1.940Garnet
Heliodore2.63 - 2.917.5 - 8.0 Mohs1.570 - 1.600Beryl
Heliotrope2.657.0 Mohs1.535 - 1.539Quartz
Hessonite3.50 - 4.306.5 - 7.5 Mohs1.730 - 1.760Garnet
Hyacinth4.60 - 4.707.5 Mohs1.777 - 1.987Zircon
Indicolite3.03 - 3.257.0 - 7.5 Mohs1.610 - 1.640Tourmaline
Jade2.90 - 3.106.0 Mohs1.640 - 1.667Jade
Jadeite2.90 - 3.106.0 Mohs1.640 - 1.667Jade
Jargon4.60 - 4.707.5 Mohs1.777 - 1.987Zircon
Jasper2.657.0 Mohs1.540 - 1.550Quartz
Labradorite2.55 - 2.766.0 - 6.5 Mohs1.560 - 1.572Feldspar
Lapis Lazuli2.70 - 2.905.0 - 5.5 Mohs1.500 - 1.550Lapis Lazuli
Malaia3.50 - 4.306.5 - 7.5 Mohs1.880 - 1.940Garnet
Matura Diamond4.60 - 4.707.5 Mohs1.777 - 1.987Zircon
Moonstone2.55 - 2.766.0 - 6.5 Mohs1.518 - 1.526Feldspar
Morganite2.63 - 2.917.5 - 8.0 Mohs1.585 - 1.594Beryl
Morion2.657.0 Mohs1.540 - 1.550Quartz
Nephrite2.90 - 3.106.0 Mohs1.600 - 1.641Jade
Onyx2.657.0 Mohs1.531 - 1.539Quartz
Opal1.98 - 2.255.5 - 6.5 Mohs1.440 - 1.460Opal
Orthoclase2.55 - 2.766.0 - 6.5 Mohs1.518 - 1.526Feldspar
Peridot3.22 - 3.457.0 Mohs1.635 - 1.690Peridot
Peristerite2.55 - 2.766.0 - 6.5 Mohs1.560 - 1.572Feldspar
Praziolite2.657.0 Mohs1.540 - 1.550Quartz
Pyrope3.50 - 4.306.5 - 7.5 Mohs1.730 - 1.760Garnet
Pyrope-Almandine3.50 - 4.306.5 - 7.5 Mohs1.730 - 1.760Garnet
Pyrope-Spessartine3.50 - 4.306.5 - 7.5 Mohs1.730 - 1.760Garnet
Quartz2.657.0 Mohs1.544 - 1.553Quartz
Red Beryl2.63 - 2.917.5 - 8.0 Mohs1.570 - 1.598Beryl
Rhodolite3.50 - 4.306.5 - 7.5 Mohs1.740 - 1.770Garnet
Rock Crystal2.657.0 Mohs2.000Quartz
Rose Quartz2.657.0 Mohs1.540 - 1.550Quartz
Rubellite3.03 - 3.257.0 - 7.5 Mohs1.610 - 1.640Tourmaline
Rubicelle3.58 - 4.068.0 Mohs1.712 - 1.717Spinel
Ruby3.96 - 4.059.0 Mohs1.757 - 1.779Corundum
Sapphire3.96 - 4.059.0 Mohs1.757 - 1.779Corundum
Sapphire Spinel3.58 - 4.068.0 Mohs1.712 - 1.747Spinel
Siberite3.03 - 3.257.0 - 7.5 Mohs1.625-1.675Tourmaline
Smoky Quartz2.657.0 Mohs1.540 - 1.550Quartz
Spessartine3.50 - 4.306.5 - 7.5 Mohs1.790 - 1.810Garnet
Spinel3.58 - 4.068.0 Mohs1.712 - 1.717Spinel
Sunstone2.55 - 2.766.0 - 6.5 Mohs1.560 - 1.572Feldspar
Topaz3.50 - 3.608.0 Mohs1.607 - 1.627Topaz
Topazolite3.50 - 4.306.5 - 7.5 Mohs1.880 - 1.940Garnet
Tourmaline3.03 - 3.257.0 - 7.5 Mohs1.603 - 1.655Tourmaline
Tsavorite3.50 - 4.306.5 - 7.5 Mohs1.739 - 1.744Garnet
Turquoise2.60 - 2.805.0 - 6.0 Mohs1.610 - 1.650Turquoise
Uvarovite3.50 - 4.306.5 - 7.5 Mohs1.740 - 1.870Garnet
Verdilite3.03 - 3.257.0 - 7.5 Mohs1.612-1.638Tourmaline
Water Opal1.98 - 2.255.5 - 6.5 Mohs1.440 - 1.460Opal
White Opal1.98 - 2.255.5 - 6.5 Mohs1.440 - 1.460Opal
Zircon4.60 - 4.707.5 Mohs1.777 - 1.987Zircon

Wednesday, March 30, 2011

April Mop

April Mop
Pada tanggal 1 April orang-orang diperbolehkan menipu dan berbohong kepada orang lain. April Mop merupakan hari kemenangan atas dibunuhnya ribuan umat Islam Spanyol oleh tentara Salib lewat cara-cara penipuan. Sebab itulah, mereka merayakan April Mop dengan cara melegalkan penipuan dan kebohongan walau dibungkus dengan dalih sekedar hiburan atau keisengan belaka.