MADE IN INDONESIA

MADE IN INDONESIA

Mengukur Jarak Planet dari Matahari

Untuk menentukan jarak planet dari Matahari, ada sebuah metode sederhana yang dikenal dengan hukum Titius – Bode. Metode ini ditemukan oleh seorang astronom Jerman yang bernama Johann Daniel Titius pada tahun 1766 dan diperkenalkan oleh rekannya pada tahun 1772, yaitu Johann Elert Bode. Tuliskan sebuah deret 0,3,6,12,24, dan seterusnya, kemudian tambahkan setiap bilangan dengan 4. Hasilnya bagikan dengan 10. Secara matematis, hokum Titius – Bode ini dapat kita tuliskan dengan persamaan sebagai berikut,

r = (n+4)/10 ; n = 0,3,6,12,24, dengan n = deret bilangan r = jarak planet dari Matahari dalam satuan AU

matahari-dan-planet-planet-yang-mengelilinginya-beserta-lintasan-orbit.JPG

Jika kita perhatikan, 7 angka pertama dari deret Titius – Bode , akan menghasilkan nilai yang hampir mendekati (0,4; 0,7; 1,0; 1,6; 2,8; 5,2; 10,0) dengan nilai sesungguhnya jarak Planet Merkurius, Venus, Bumi, Mars, Jupiter, dan Saturnus dari Matahari (0,39; 0,72; 1,0; 1,52; 5,20; 9,54). Pada nilai 2,8, dikemudian hari, para astronom menemukan sabuk asteroid yang jarak sebenarnya adalah antara 2,2 sampai 3,3 AU dari Matahari.

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November 9, 2008 Posted by | Uncategorized | Tinggalkan komentar

the legend of karimunjava island

once upon a time in muria mountain, there lived the family of sunan muria. amir hasan or called as sunan nyamplungan is the son of sunan muria.

he was very spoiled by his mother. because of that, he became a naughty boy.

then his father, sunan muria asked him to study in kudus. he studied islamic religion to his uncle, sunan kudus. after some time, he became an obedient young man. sunan muria was very proud of him.

one day, sunan muria asked amir hasan to go to somewhere to spread islamic religion. his father asked him to go to an island that could be seen from muria mountain. it was on the west – north of jepara. this island seemed to be fade (kremun-kremun in javanese). and from that time, people called the island as karimunjava island.
amir hasan followed by his mate went to karimunjava island. they sailed to the island day and night and finally they reached the island. then they did what his father said. amir hasan and his people lived in the island ever after.

September 12, 2008 Posted by | Uncategorized | Tinggalkan komentar