Mechanical Engineers have invented many things in the past. Everything that you see around you has been invented or have been modified by a mechanical engineer. The car or bike that we use every day to travel is also an invention of a mechanical engineer. The engine used in these vehicles is also invented by a mechanical engineer. The use of the engine is not restricted to just cars or bikes, it is also used in pumps and aircrafts as well.
Thus mechanical engineers have helped to reduce the human efforts. There are also other inventions such as boilers, which have increased the speed of processes drastically and have helped to produce quality products in limited time.
Other inventions include JCP and hydraulic press, which have made it possible to produce immense pressure without any efforts. Thus it has helped to make the life of individual easier. One of the most significant contributions from mechanical engineers is the invention of railways which has made the transport of heavy goods faster and easier.
Other inventions include development of planes and also development of modern air conditioning system. The invention of these have helped to reduce the human efforts to a large extent. Another remarkable invention was that of water turbines. This invention opened the way for water transport, which is still today one of the most used way of transportation.
The invention of refrigerator also helps to change the world. The food could be preserved in a better way using it and thus it helped from wastage of good food. Another remarkable invention is that of the rocket which has opened doors for many deep space inventions, including discovery and better understanding of other planets and stars in the galaxy.
The invention of the gear box has helped to ease the human efforts to a large extent. The gearbox is used in almost every mechanical equipment we use today.
And of course, mechanical engineers invent the tools that they themselves use to build other tools!