INVENTIONS: how they made the world easier

This is the second part of the INVENTIONS series by The Incredible Truth:

🚅 PLOUGH :

Plough is basically a large farming implement with one or more blades fixed in a frame, drawn over soil to turn it over and cut furrows in preparation for the planting of seeds. The first plough was developed in about 5000 BCE from simple hoes and digging sticks that had been used by farmers for thousands of years. By changing the shape and size of it's various parts it was gradually found that the soil could be cut, loosened, and turned in operation.
Now a days latest trucks and hand trucks are being used to farm the soil.
There are a lot of varieties of mini plough machine, hand plough machine etc.







🚅 PAPERS :

The first paper making process was documented in China during the Eastern Han period (25-220 AD), traditionally attributed to the court official Cai Lun. During the 8th century, Chinese paper making spread to the Islamic world, where pulp mills and paper mills were used for paper making and money making.

🚅 Drilling Tools :

From 3000 BCE Egyptians are using the tools for boring holes. Around 230 BCE the Greek scientist Archimedes explored the use of levers and gears to transmit and increase forces.

⦿ Awl Drill: The ancient Egyptians used this early awl drill to make starter holes for a bow drill bit and to mark the points on planks where wooden pegs were to be fitted.

⦿ Bow Drill: We don't know whether the bow drill was first developed for woodworking or fire working. The ancient Egyptian example above is a fire drill. With a bone as the bow, a leather strip was used to rotate a wooden drill at speed on a wooden hearth generated enough heat to ignite dry grass. It also made a hole in the wood.













 🚅 Screw Pump: Different inventions use the same idea in different ways. Archimedes used a screw to raise water in a pump of this kind. The screw makes lifting easier because its thread lifts water more gradually, like a ramp. 

A screw pump works in the principle of positive displacement (PD) pump.







INVENTIONS SERIES 2 : THE INCREDIBLE TRUTH

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