Prague has three metro lines, 20 tram lines, and buses that connect to the suburbs. There is also a funicular rail link to the top of the Petřín Hill and a chairlift at Prague Zoo. All these services have a common ticketing system.
Prague metro is one of the best in Europe for quality and speed. It has got 3 lines (A, B, and C), 65 kilometers and 61 stations.
Trains from Prague connect to major cities in neighbouring countries.
There is a modern airport, Václav Havel airport Prague, used by many airlines including Czech Airlines.
Prague has many parks and gardens, including a park for culture, sports and entertainments which is named after Julius Fučík, a resistance leader of World War II. It has three stadiums, the largest of which, Spartakiádní stadion, holds 250,000 people. They have a good Soccer team and play many sports.
Wallet
A wallet is a small flat container, mostly of leather or fabric, that a person uses to hold cash, credit cards, identification cards, etc. Most men usually keep their wallets in their pockets, while women usually keep them in larger bags called purses.
Wallets, particularly in Europe, where larger coins are prevalent, contain also a coin purse compartments. Some wallets have built-in clasps or bands to keep them closed.
As European banknotes, such as Euros and Pounds, are typically larger than American banknotes in size, they do not fit in some smaller American wallets.
Memory card
A memory card is a form of flash memory that is used in a range of electronic devices such as a digital camera or video game console. The memory card stores data, images, music, saved games or other computer files.
Flash memory devices like this contain no moving parts so they are not easily damaged. This means that they are ideal for use in portable devices such as MP3 players, digital cameras, mobile phones etc.
The amount of data memory cards can store depends on the "capacity" of the card. Currently (in 2017) the largest memory cards can store 1 terabyte of data. As the technology improves, larger capacity cards are expected.
There are many different types of memory cards, for example MultiMediaCard or CompactFlash, but the majority are SD cards or MicroSD.
Computer printer
A computer printer is a piece of hardware for a computer. It allows a user to print items on paper, such as letters and pictures. Mostly a printer prints under the control of a computer. Many can also work as a copying machine or with a digital camera to print directly without using a computer.
Today, the following types of printers are in regular use:
Printers are programmed using a programming language. The printer interprets the program, and the outputs the result. There are two big classes of such languages: Page description languages, and Printer Control languages. A page description language describes what a page should look like. The program in a page description language is sent to the printer, which interprets them. Printer command languages are at a lower level than Page description languages, they contain information that is specific to the printer model.
Common programming languages for printers include:
When comparing the cost of a printer, people often talk about how expensive it is to print one page. This cost usually has three components:
Printers that are more expensive to buy will usually be less expensive in the consumables (the ink, toner, or ribbon used by the printer). Therefore, laser printers are often more expensive to buy than inkjet printers, but are not as expensive to use over a long period of time. Inkjet printers on the other hand have a higher cost of consumables because the ink tanks they use are more expensive than the toner for a laser printer. Laser printers that can print in color are usually more expensive than those that only print in black and white. Some expensive printers can do other things such as print on both sides of the paper, automatically sort the output, or staple the pages.
Chasing Vermeer
Chasing Vermeer is a children's novel. It is about two children noticing strange coincidences relating to art. The book was written by Blue Balliett and published (printed) by Scholastic in 2003. It says many things about the Dutch painter Johannes Vermeer.
The sequel to the book is "The Wright 3".
Great Wall of China
The Great Wall of China is an ancient wall in China. The wall is made of cement, rocks, bricks, and dirt. It was finished in 1878 and it was meant to protect the north of the empire of China from enemy attacks. It is the longest structure humans have ever built. It is about 21,196 kilometers long, wide and 15 metres high. The earlier sections on the wall are made of compacted dirt and stone. Later in the Ming Dynasty they used bricks. There are 7,000 watch towers, block houses for soldiers and beacons to send smoke signals.
Nineteen walls have been built that were called the Great Wall of China. The first was built in the 7th century BC. The most famous wall was built between 226–200 BC by the first Emperor of China, Qin Shi Hong (Qin Pronounced as Chin) , during the Qin Dynasty. Not much of this wall remains as people have been stealing from it. It was much farther north than the current wall. The current wall was built during the Ming Dynasty.
The First Emperor of China, Qin Shi Huang also called Shi Huangdi, started the Qin Dynasty. The Xiongnu tribes in the north of China were his enemies. The land in some parts of China is easy to cross, so Qin Shi Huang started building the Great Wall to make it more difficult for the Xiongnu to invade China.
Other dynasties in China had worked more on the wall and made it longer. The Han, Sui, Northern and Jin Dynasties all repaired, rebuilt or expanded the Great Wall. During the Ming Dynasty, major rebuilding work took place. Sections of the wall were built with bricks and stone instead of earth. It took more than 2000 years for building and completion of the Great wall.
The Great Wall of China is a series of fortifications that were built across the historical northern borders of ancient Chinese states. It is the longest structure humans have ever built. It is about 21,196 kilometers long, 9.1 metres (30 feet) wide and 15 metres high. It is made over the course of hundreds of years, the wall was built by over 6 different Chinese dynasties, and is over 2,300 years old.
The wall was built to help keep out northern invaders like the Mongols. Smaller walls had been built over the years, but the first Emperor of China, Qin Shi Huang, decided that he wanted a single giant wall to protect his northern borders. The most well-known sections of the wall were built by Ming Dynasty. Genghis Khan, the founder of the Mongol Empire, was the only one who breached the Great Wall of China in its
2,700-year-history.
The Great Wall was designated a UNESCO World Heritage site in 1987. The Great Wall was declared as one of the Seven Wonders of the World in 2007.
Builders used materials that were nearby. Some parts of the wall were made of mud, straw, and twigs. Thousands of workers died from giant falling stones, exhaustion, disease, animal attacks, and starvation. Workers dying and being buried in and under the Great Wall is a myth.
Rumours about astronauts being able to see the Great Wall from the moon are scientifically not proven. The Great Wall has shown up in radar images taken from space, but scientists are sure it is not possible for astronauts to see the wall with a naked eye. One astronaut who spoke about the visibility of the Great Wall from space was Neil Armstrong. He said that on the moon, it was very clear that the wall was not visible. However, astronaut William Pogue was able to see the wall from a Low Earth Orbit distance (300-530 km height), but only with binoculars and with lots of practice.
Amazon River