China
The United States is the only major industrialized country in the world that does not use the Celsius scale. It still uses Fahrenheit because it would be too complex a project, very expensive, and also very dangerous to change over.
Wow...Where to start? Well, the Colosseum was one of the many architectural achievements won by the Romans. It housed 50,000 people, had an area beneath the fighting floor, and it still stands (partially) today! Aqueducts were also among the many advances. Romans used these structures to ferry water through an archway that lead from the mountains directly to the city, allowing plumbing and clean water, without any travel. Stone roads were achieved by building the Appian Way (Via Appia in Latin) which made travel faster, easier, and overall more enjoyable. Caesar, during the crossing of the Rubicon, built a HUGE bridge with his army in only 2 weeks or so. He used gravity and leverage to hammer in the huge support beams underground, by building an apparatus that would be pulled by rope, then dropped (at a 45 degree angle) straight into the wooden beam. If I'm missing more please feel free to correct me, but those are the major advances.
no you need matematics to do chemical engineering because of the formular wich involves maths not mathematical litrecy
People use wheelbarrows today to move materials such as bricks, concrete (wet or in bags), stones, sand, and topsoil.
The eventual cost of the Grand Coulee Dam was about 300 million dollars. It still remains the largest concrete structure ever built.
According to an online directory of Steam Locomotives, the number was and still is 4468.
Steam locomotives are extremely inefficient compared to diesel and electric locomotives. In addition, they are costly to maintain. In the US, many, and most likely most, steam locomotives that are still in use require people that work with little or no pay, as volunteers to simply enjoy being able to be a part of the steam railroad. Some maintenance (such as boiler inspection and repair) requires highly specialized people that are becoming rare in the US, making this costly in many cases. So, when you see a steam locomotive at the front of a train, you most likely need to thank a few dedicated people that want to keep them going.
Steam trains began to decline in regular use in the mid-20th century, with many countries transitioning to diesel and electric locomotives. In the United States, the last regular steam passenger service ended in 1968, while freight operations continued into the 1980s. By the 1990s, steam locomotives were largely retired from regular service worldwide, although some still operate on heritage railways and special excursions.
Steam engines presently produce more power than all other types of engines combined. Most steam engines take the form of the steam turbine engine. The steam turbine is responsible for generating about 86% of the electric power used on this planet. Reciprocating steam engines are still in use for limited applications, but are generally considered obsolete. Steam engines, either the piston or turbine type were used on most big ships until recently, and there are still a few steam locomotives about.
Yes, for many tourist trips in the UK and elsewhere. Also possibly for ordinary trains in parts of South America, China and South Africa.
B/c a train isn't big enought to retrieve and reuse all of it, so some will be dumped into the air. On some locomotives, the still hot steam will be shot out through the smokestack, improving the air flow through the firebox. With more fire, you get more steam, and more power from the locomotive.
Steam engines began to decline in the UK in the mid-20th century, with the last steam locomotives in regular service on British Railways being phased out by the late 1960s. The final steam-hauled passenger service occurred on August 11, 1968. However, some steam engines have been preserved and are still in operation for heritage and tourist railways.
Steam engines and steam pumps performed and still perform any jobs presently performed by internal combustion engines, or electric motors. Except aircraft engines, (they and the necessary boilers are too heavy to fly). Locomotives, pumping, generating electricity, automobiles, industrial machinery...etc..
Steel. various alloys including some copper-oriented are used in the vital tubes. it is true the Big Boy and similar Mallets ( locomotives with two sets of driving wheels, in colloquial parlance) had 5280 feet of stacked tubes- yes, one mile, as did the French experimental model intended for use in the Alps.
A steam engine is a type of engine that uses water steam to generate power. It operates by heating water in a boiler to produce steam, which then expands and moves pistons or drives turbines to perform mechanical work. Steam engines were pivotal during the Industrial Revolution, powering locomotives and machinery. Modern applications have largely shifted to more efficient engines, but steam technology still finds use in some power plants and historical restorations.
While steam trains are not commonly used for regular passenger or freight services today, they are still operational in some areas for tourism, heritage railways, and special events. Many countries maintain steam locomotives as a nostalgic attraction, allowing visitors to experience historical train rides. Additionally, steam technology is studied and preserved by enthusiasts and museums. However, modern rail systems predominantly rely on diesel and electric trains for efficiency and environmental reasons.
The first kind of locomotive ever invented was steam-powered, the original patent was from James Watt. Nowadays a total 40% of the freight cargo of the world is still being transported by train. Passengers transport is still very popular and travelling by train is one of the most eco-friendly you can choose.