:)

wif beloved best friends :)


left to right :
wenny , tiffany , vivi , me , selvia , andriani , thalia , n sylvia

monalisa :D

The Mona Lisa (also called La Giocconda which in Italian means happy or joyful woman) is an early sixthteenth century portrait by Leonardo da Vinci. It is one of the most famous paintings in the world. Vasari, who was Leonardo's first biographer (a person who writes about the life of another person), thought the painting was of a person named Lisa Gherardini. Speculation over the painting's model was solved in 2008 by Dr Armin Schlechter, a manuscript expert. Notes discovered in Heidelberg University Library which were written by Agostino Vespucci, a Florentine city official, reinforced Vasaril's earlier indentification of the model. Lisa was the wife of Francesco del Giocondo a wealthy silk merchant, who lived in Florence.
Scholars have been of many minds, identifying several people as the painting's subject. There are scholars who think that the Mona Lisa is Leonardo's mother Caterina in a distant memory.
Leonardo began to paint the Mona Lisa in 1503 and finished it about three or four years later. The painting was brought to France by Leonardo in 1516 and it was bought by Francis I of France.
The Mona Lisa used to hang in the Chateau Fontainebleau and was then moved to the Palace of Versailles. After the French Revolution, Napoleon I of France had it hanging in his bedroom in the Tuileries Palace, but it was later moved to the Louvre where it is still hanging today.

 Stolen

On August 21, 1911, the Mona Lisa was stolen. The Louvre museum thought it was being photographed, but when they checked, it wasn't there. The Louvre closed for one week to help look for it.
People thought Guillaume Apollinaire, a French poet, stole it. He was put into jail, and tried to make people think his friend Pablo Picasso did it, and he was questioned. It wasn't either of them, though.
It was lost for two years, and everybody thought it would be lost forever. A worker at the Louvre, named Vincenzo Peruggia, had actually stolen it. He had hidden it in his coat and walked out with it after the museum had closed. He wanted the painting to go back to Italy and be shown in an Italian museum. After hiding it in his apartment for two years, he grew impatient and tried to sell it to a gallery in Florence, but was caught. It was shown all over Italy before going back to the Louvre. People thought Vincenzo was a hero who loved Italy, so he only spent a few months in jail. The Mona Lisa is very mysterious.

hukum pascal

Bunyi Hukum Pascal

"Jika suatu zat cair dikenakan tekanan, maka tekanan itu akan merambat ke segala arah dengan tidak bertambah atau berkurang kekuatannya".

Penemu Hukum Pascal

Blaise Pascal (1623-1662) berasal dari Perancis. Minat utamanya ialah filsafat dan agama, sedangkan hobinya yang lain adalah matematika dan geometri proyektif.

Penurunan Rumus

Pascal disimbolkan dengan Pa satuan turunan SI untuk tekanan atau tegangan.
Satuan ini dinamakan menurut nama Blaise Pascal, seorang matematikawan, fisikawan dan filsuf Perancis.

• 1 Pa
– = 1 N/m² = 1 (kg•m/s²)/m² = 1 kg/m•s²
– = 0,01 millibar
– = 0,00001 bar

DONGKRAK HIDROLIK

Berbentuk Silinder dengan silinder (garis tengah) yang diketahui. Dengan pengisap 1 berdiameter D1 dan pengisap 2 berdiameter D2, maka :

Maka Didapatkan Persamaan
SECARA MATEMATIS, HUKUM PASCAL DIRUMUSKAN SEBAGaI BERIKUT.

F1 = D1/D2 * F2

KET :
F1 = gaya pada permukaan A (N)
F2= gaya pada permukaan B (N)
A1 = Luas permukaan A (m2)
A2 = luas permukaan B (m2)
D1 = diameter permukaan A (m)

Aplikasi Hukum Pascal

- Dongkrak Hidrolik
- Pompa Hidrolik
- Mesin Hidrolik Pengangkat Mobil
- Pengepresan Kapas