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If you don’t know who repairs all the machines and whom the maintenance industry relies on, then it is the mechanical engineer. Everyone thinks that he or she is just repairing cars; however, he or she makes, builds, and repairs new machines to improve our daily lives. This professional helped us save time in the industry. When machines appeared during the Industrial Revolution in 1750, the whole society changed; not only companies grew, but people also changed their lives, because machines reorganized everything, especially production and our time, because it cost more than work. There is less time, and the machine improved the trade and work.

Initially everyone disliked the result of this change. Because it replaced people’s jobs, but over time, everyone accepted the machine and began to think that they were the best choice. According to all attributes; the first machines were bigger, now they are smaller and more practical, because machine manufacturers must improve the machines to make them easier for people and industry to use.

The wheel

Before the invention of the wheel 3500 BC C. people were very limited in the amount and distance of goods we could bring ashore. Apparently the wheel itself isn’t the hardest part of “creating a wheel”. When it came time to install a stationary platform on these winding cylinders, everything got complicated, according to David Anthony, a professor of anthropology at Hartwick College. “The highlight was the wheel and axle concept,” Anthony previously told Live Science. The size of the axle is also a determining factor, as is the hole in the hole (not too tight, but not too loose). The hard work was in vain, great time. Wheeled carts made it easier for agriculture and trade to transport goods to and from markets, as well as relieving stress on people traveling long distances. Today, wheels are very important to our lifestyle, and they can be found in everything from watches to vehicles to turbines.

Nail

Without nails, civilization will surely collapse. This major discovery can be traced back to Roman times more than 2,000 years ago, and this could only be done after humans developed the ability to melt and form metals. Geographically, this is a much more complicated design process. According to the University of Vermont, until the 1790s and early 1800s, hand-forged nails were the norm. The blacksmith heats a square iron rod and hits it from four sides to form a pointed end. Nail machines were introduced in the 1790s to the early 1800s. The technology of making nails continues to evolve; according to the University of Vermont, after Henry Bessemer developed a method of mass production of fertilizer with iron, the old iron nails gradually disappeared. By 1886, 10% of Staples were made of mild steel wire. In nails made in the United States, this is steel wire. Screws are now considered stronger but more difficult to install fasteners.

Compass

Old sailors look for stars, but this method does not work during cloudy days and nights, so it is not safe to travel far from land. The Chinese invented the first compass between the 9th and 11th centuries; these stones are made of magnetic stone, which is a natural magnetic iron ore, and they have studied its attractive properties for centuries. (The photo shows an ancient Chinese compass model in the Han Dynasty; it was a south -facing barrel or Sinan, made of polished magnets.) Soon, the technology was passed on to Europeans and Arabs via sea contact. This compass allowed sailors to sail safely from land, expanded maritime trade, and contributed to the age of discovery.

Prenting Press

The key to its development is manual molding, which is a new molding technology that can quickly produce a large number of movable metal letters. By developing movable type made of metal, Gutenberg pioneered the development of a mechanized process for transferring ink (made of linseed oil and soot) from movable type to paper. Through this movable type printing technology, the printing press exponentially increases the speed of book copying, thus realizing the rapid and widespread dissemination of knowledge for the first time in history. By 1500, 20 million copies had been printed in Western Europe. Among other things, book printing allowed people to have better access to the Bible, which in turn led to other interpretations, including Martin Luther’s, whose 95 essays were printed for hundreds of thousands, angering the reformation’s testament people.

Combustion Engine

In these engines, when the fuel burns, it releases high-temperature gas. When it expands, it exerts force on the piston and moves the piston, so that the internal combustion engine converts chemical energy into mechanical work. When designing the internal combustion engine, it adopted a (essentially) modern form in the second half of the 19th century. The engine marked the beginning of the industrial age and made possible the invention of various machines including modern automobiles. The figure shows the operating phase of a four-stroke internal combustion engine. The fuel burns and the piston descends to drive the engine