Rabu, Maret 26, 2008

LapTop Jadul

LapTop Jadul

Osborne 1

Commodore SX 64
RAM 64 K


IBM 5100 tahun 1975
harga = US$ 8,000-20,000 tergantung opsi yg di pilih
Berat = 25 Kg
Memory = 64 Kb
Tape drive bisa 204 Kb

IBM 5100 dan Tape Drive

Suasana pengunaan IBM 5100 di tahun 1975

coca cola ad's

iklan coca cola dari dari tahun 1900an - 1990an

Selasa, Maret 25, 2008

Lights in the sky

"On a Friday, we saw three suns in the sky for a good long time, about an hour... Even though the other two suns were not as bright as the one, they were clearly visible. I feel this was no small miracle..." These were the words Jacob Hutter employed to describe a sun dog in the sky in the 16th century. The phenomenon had been described by men for a long time. "What the facts are in regard to that second sun that has been reported to the Senate?" - asked Marco Tulio Cicerón at the city of Rome in 129 BC.

According to Wikipedia, the morning April 20th 1535, the skies over Moravia were also filled with white circles and arcs crossing the sky, while additional suns appeared around the sun. The phenomenon quickly resulted in rumours of an omen of God's forthcoming revenge on King for having introduced Protestantism in the country.

A sun dog or sundog (scientific name parhelion) is an atmospheric optical phenomenon associated with the refraction of sunlight by small ice crystals that make up cirrus or cirrostratus clouds.

The word "parhelion" (from Greek: para-, beside + hēlios, sun) means "close to the sun". The sundogs are formed by light passing through ice crystals inclined at 60° to each other. These ordinary parhelia appear 22 degrees on either side of the sun

In this post you can see some interesting photographs and you can check out some more information if you click on them. Recently English Russia published a video with a fantastic scene of sun dogs.

More info and sources: 1, 2, 3, 4

The flipping ship

The FLIP research vessel (Floating Instrument Platform) is the only ship in the world having the ability to flip from a horizontal position to a vertical position while at sea.

The FLIP ship is designed to study wave height, acoustic signals, water temperature and density, and for the collection of meteorological data.

FLIP is 108 meters long and weighs 700 long tons. According to Alan Bellows, "when in horizontal traveling mode, the long, hollow ballast area trails behind. When it reaches the desired location, the "tail" is flooded until the nose sticks straight up into the air, taking about twenty-eight minutes to reach vertical position". You can see the process in this video:

Even in stormy conditions, it is as stable as a fencepost, because most of its length lies in the untroubled waters beneath the waves.

During the flip, the crew stand on the outside decks. Scientists and crewmembers literally walk up the walls to stay upright. Suddenly, the aft side of the barge becomes its floor. That makes for some ingenious engineering feats in equipping its bridge, galley, crew quarters and scientific laboratory. Even its head, or bathroom, had to be constructed to operate in a vertical and horizontal position.

As you can see in the video, some of FLIP's furnishings are also built so they can rotate to a new position.

In 1995, FLIP received a $2,000,000 modernization. The structural build is currently excellent and instrumentation will allow FLIP to be an oceanographic powerhouse in the future.

More info and sources: 1, 2, 3, 4, 5

The giant ocean sunfish

The ocean sunfish (mola mola) is the largest bony fish in the world. It is a unique pelagic fish, and specimens of ocean sunfish have been observed up to 3.3 m (11 ft) in length and weighing up to 2,300 kg (5,100 lb).

Curiously, the Ocean Sunfish has a very small brain compared to its size: A 200 kg specimen may have a brain the size of a nut weighing only 4 g. It would explain their quiet behaviour and how often they get trapped into fisher nets.

According to the National Geographic if it lives to adulthood, a sunfish can gain over 60 million times its starting weight: "the equivalent of a healthy, bouncing human baby growing to a weight equal to six Titanics".

The images of scuba divers next to a giant sunfish gives us a better idea of their incredible size. Fortunately, ocean sunfishes float serenely in midwater.

Ocean sunfish is generally thought to be solitary fish, swimming freely in the ocean alone. However, certain sightings of molas in groups of more than ten have been reported. Frequently, giant sunfishes lie inert on the ocean surface, apparently sunning themselves.

Sometimes, ocean sunfishes are caught accidentally by fishers nets and a crane is needed to lift them on board.

Another threat to ocean sunfish are floating plastic bags which look like their natural prey, jellyfish. Sunfish can choke as they try to swallow the bags, or slowly starve as the plastic clogs their stomach.

Recently, a Gaza fisherman trapped a giant sunfish. He threw his nets into the water and was surprised when the fish got stuck in five of his nets. His catch measured 3.5 metres or 11 feet in length, 1 metre in width and weighed one tonne. Many fishers have lived the same experience, and it seems pretty impressive.

Some years ago, Australian Museum acquired such a large specimen that they had to use ropes to haul it up and get it inside the building through a window. As you can see, the size of other specimens is as big as a parking place.

On the other hand, giant sunfishes are an important menace for little ships. A collision at high speed can cause both injury to sailors and damage to yachts.

Finally, the flesh of the ocean sunfish contains neurotoxins similar to those of other poisonous tetraodontiformes, but it is considered a delicacy by some people.

More info: 1, 2, 3, 4, 5

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