Swimmer's diary

Feb 25, 2007

စလိုေဘးနီးယား လူမ်ိဳး မာတင္စရာလ္ ဆိုသူ တာေ၀းေရကူးသမားတေယာက္က ပူရူးနိုင္ငံကေန ၿမစ္ေၾကာင္း တေလ်ာက္ ဘရာဇီးနိုင္ငံ အထိ ကီလိုမီတာ ၅၄၀၀ နီးပါးရွည္တဲ႔ခရီးကို အေရာက္ကူးဖို႕ ၾကိဳးစား ေနပါ တယ္။ အပူခ်ိန္က အီေကြတာေအာက္မလို႕ ၃၅၊ ၃၇ ဒီဂရီ ေလာက္ရိွၿပီး သူပတ္လတ္လန္ ကူးတဲ႔အခါ မ်က္နာ ကို အ၀တ္အုပ္ထားရတယ္ဆိုပါတယ္။ တေန႕ပ်န္းမွ် ၈၅ကီလိုမီတာ ေလာက္ကူးခတ္ေၾကာင္းသိရ ပါတယ္။ ယခုအခ်ိန္ဆို ဘရာဆီးဘယ္နားေရာက္ေနၿပီလဲေတာ႔ မသိ။ ေမာင္မင္းၾကီးသား ေအာင္ၿမင္ပါေစလို႔ဆႏၵၿပဳ လိုက္ပါ တယ္။




Photo journal

Feb 24, 2007

Mass production began in Detroit in 1914 when Henry Ford discovered that a moving assembly line using interchangeable parts could radically reduce the cost of making motor cars. He sold 28m Model T Fords, transforming America into the first car-owning democracy, at a price that dropped from $600 to $250 over 15 years.

Ford was even more determined to resist unions than GM, and Henry Ford employed 3,000 “service department” personnel to prevent them taking hold. In 1937 they beat up key UAW union organisers attempting to hand out leaflets near the River Rouge factory. But in 1941, even Ford was forced to yield to union power, to ensure industrial peace during wartime. But the legacy of bitter industrial relations endured.




Feb 22, 2007

သူငယ္ခ်င္းတေယာက္ေၿပာတဲ႔ ၿမန္မာ ဘန္းစကား ေတြေရးထားတဲ႔ ဆိုက္ပါ။ အၿပင္းေပ် ဖတ္ခ်င္ရင္ဒီမွာဖတ္နိုင္ပါတယ္။ http://www.gawdi.com/index.php



Wind Turbines

Feb 12, 2007

Wind machines were used for grinding grain in Persia as early as 200 B.C. This type of machine was introduced into the Roman Empire by 250 A.D. By the 14th century Dutch windmills were in use to drain areas of the Rhine River delta. In Denmark by 1900 there were about 2500 windmills for mechanical loads such as pumps and mills, producing an estimated combined peak power of about 30 MW. The first windmill for electricity production was built in Cleveland, Ohio by Charles F. Brush in 1888, and in 1908 there were 72 wind-driven electric generators from 5 kW to 25 kW. The largest machines were on 24 m (79 ft) towers with four-bladed 23 m (75 ft) diameter rotors.

By the 1930s windmills were mainly used to generate electricity on farms, mostly in the United States where distribution systems had not yet been installed. In this period, high-tensile steel was cheap, and windmills were placed atop prefabricated open steel lattice towers. A forerunner of modern horizontal-axis wind generators was in service at Yalta, USSR in 1931. This was a 100 kW generator on a 30 m (100 ft) tower, connected to the local 6.3 kV distribution system. It was reported to have an annual load factor of 32 per cent, not much different from current wind machines.

How wind turbines work

1. Wind causes blades to rotate
2. Shaft turns generator to produce electrical energy
3. A transformer turns this into high-voltage electricity
4. Electricity is transmitted via the power grid

Leading wind energy nations
1. Germany - 20,622MW
2. Spain - 11,615MW
3. USA - 11,273MW
4. India - 6,053MW
5. Denmark - 3,136MW
6. Italy - 2,123MW
7. UK - 2,016MW
8. Netherlands - 1,564MW



3D Drawing

Feb 9, 2007