"Mo once said that the foundation of ink technology was power. Before the emergence of Mohism, people used their hands to work. One person's power was only a hundred kilograms, even less than cattle and horses, and the efficiency was very low. Mo called it the human age." Merton Lang said.
"Human age!"
Everyone nodded, the production efficiency was very low in the pre-Qin period, and manpower really occupied the mainstream of the society.
"After the emergence of Mohism, they began to study ink technology and create machinery. Machinery began to be popularized in China. The power of machinery is ten times greater than that of manpower. Today, the most powerful bridge erecting machine of Mohism can lift tens of thousands of kilograms of heavy objects, which is the power of machinery." Merton said proudly.
Everyone was silent. Naturally, they heard of the power of the Mohist bridge erecting machine and were shocked by it.
"Nowadays, machines using ink technology are popular in the Tang Dynasty. One person using machines is better than ten people and a hundred people. The human age has passed and a new mechanical age has come." Merton said proudly.
"Mechanical age!"
Mohist Sanmai and public loser nodded slowly and agreed with Merton's division. Now machinery has been integrated into all aspects of Datang. The work that could not be completed by manpower in the past can be easily completed by machinery, and many machines have replaced manpower.
Yan shigu was shocked. He picked up his pen and wrote down the four big characters destined to be written in history books on paper.
"However, it's the same person. Under one person, it's only a hundred kilograms, but one person's power to control machinery can reach thousands of kilograms. What's the mechanical principle? Have you ever thought about it?" Merton asked.
All the craftsmen were confused. The machines they made were handed down by their masters or generations. Where have they studied the principles behind them, only the two veins of Mohism and the public loser were thoughtful.
"The key is the well-known lever principle," Merton Lang said.
"Lever principle!"
Everyone frowned. After the revival of the Mohist school, the "Mojing" became very popular. Almost all craftsmen have a Mojing. They hope that one day they can create new ink skills like the Mohist family. The lever principle in the Mojing is well known, but few have created ink skills.
"That's because you have a biased understanding. The lever principle is not just a stick and a fulcrum. It can be in a variety of forms. For example, the winch. The reason why the noodle pressing machine is labor-saving is that we shake a winch with a diameter of one foot and drive only an inch of gear. If we use a force of 30 kg to shake the winch handle, we can Through the action of the lever principle, the force of the gear can reach 300 kg, which can easily move the circle and save labor, "Merton explained.
People suddenly realized that they understood the manufacturing principle of the noodle press.
Li Yun vaguely realized that it was not so simple, but it was like a layer of fog. He couldn't catch that trace of inspiration.
"Similarly, our foot strength is only tens of kilograms, but the bicycle can drive hundreds of kilograms of weight forward. The secret lies in the distance between the winch and the pedal. The foot force acts on the gear through the winch, and the gear acts on the wheel through the chain, which is also the function of the lever principle." Merton turned over and rode on the two or eight bars and rode around the center of the venue, The crowd watched mojiazi step on the pedal easily, but the speed of the bicycle was comparable to that of people running. Originally, they just looked strange. Now they understand the principle and marvel at the magic of ink technology.
"In addition to ink skills,
"In addition to the round shape, the lever principle can also exist in another form, that is, the pulley, and the Mohist kilo arm is made based on this principle." Merton reached out and waved, a curtain fell, revealing a support fixed on the ground, on which a row of pulleys were fixed.
"The pulley is also a lever?" Xiao Dengkui said inconceivably. The Mohist kilogram arm is famous and a masterpiece of Mohist machinery. Naturally, Deng Ling's pulse has also been deeply studied.
Merton nodded: "there are two kinds of pulleys. One is the fixed pulley fixed on the kilogram arm. The fixed pulley does not save effort, but it can change the direction of force and make it more convenient for us to use force."
Merton said, tie up a weight of 100 kg with a rope, and pass it through the fixed pulley with a rope. The weight that needs to be lifted only needs to be pulled down.
"The fixed pulley can change the direction of force, and the real labor saving still needs to move the pulley and the fixed pulley to form a pulley block." Merton laboriously put down the rope and gasped.
Merton picked up a movable pulley and connected it in series with the fixed pulley on the boom to form a set of simplest pulley block in public. This time, Merton pulled the platinum weight without much effort. Since then, the more pulley blocks Merton added, the easier it was for Merton to pull up the weight of 100 kg. This time, Merton easily pulled up the weight of 100 kg, and even mischievous up and down A few.
"So that is what it is." the ordinary craftsman suddenly came to his senses, and suddenly his heart opened up.
"As you can see from the situation just now, the more pulley blocks, the more labor-saving. The amount of labor-saving is determined by the number of ropes in the middle of the pulley block. There are several ropes, and the force used by manpower is a fraction of the object." Merton said.
Li Yun's eyes lit up, as if he had understood the key.
Merton Lang said, "in this way, let us return to the most basic form of the lever principle."
With a wave of Merton's hand, a group of Mohist children raised something like a seesaw in children's paradise, but the lever fulcrum was not in the center, but offset to one side.
"This is a special lever made by the Mohist family. The length of one side is one foot, and the length of the other end is one foot." Merton hung a hundred jin weight at the end of one foot and walked to a long sound path of the lever of one foot. "How many kilograms of weight do you think can lift a hundred kilograms of weight.
"Ten catties!" the people said without hesitation. In the past, they only knew that the longer the length of the lever, the more labor-saving. After many demonstrations by Mohist Zi, they naturally knew and understood the mystery.
Merton immediately showed a knowing smile and hung a ten pound weight on a ten foot long lever. The whole lever was balanced on both sides like a scale and lifted at the same time
"It seems that you have understood the secret of the unique lever principle. However, have you ever imagined that if a long lever can reach a hundred feet, a thousand feet, or even an infinite length, this lever can provoke multiple objects." Merton's voice gradually rose and resounded through the audience.
People's hearts were shocked, and they couldn't help shaking at the bottom of their hearts. If they could really achieve this, wouldn't ink technology be omnipotent.
"Give me a fulcrum, I will pry the whole earth." Merton's final most arrogant famous saying of mankind.