After the speech, the students who were moved so much that the ladies began to enjoy a sumptuous Christmas dinner. The band invited at high prices played cheerful music on the side, and the atmosphere was very good.

When everyone had almost had enough of their meals, it was finally the finale of today's Christmas dinner. Mr. Babbage was the host of this show.

Some students have guessed a little bit, and it is indeed related to Mr. Babbage's computer! A failed machine of Babbage created a total of 28,000 parts. This time, Tangning's acetate thermoplastic factory built more than 300,000 Lego-style parts for him, and the thermoplastic model is there, and can be produced again according to the progress and needs of the project. He can have whatever he wants and as much as he wants. Let Mr. Babbage let his imagination fly and manufacture the world's first programmable computer.

Professor Babbage was the chief engineer, dividing the project into more than a dozen parts, with more than a dozen assistants as team leaders, and organizing volunteer students from Cambridge University to complete this feat. Any student who can understand the principles of this machine can join this historic event. Tangning provided funding and spare parts production for this project, and served as a consultant. He loved to do something that the rich should do - what scholarships and employment opportunities to attract students to volunteer.

Careful students may find that the printing quality of the learning materials they receive is not very good. It turns out that this is a small batch mimeograph. The typewriter with paper tape transfer does have a "copy" function, but this speed is too slow, and you have to wait when you have to copy dozens of copies. Therefore, the Telegraph affiliated printing factory, which has been officially renamed "Three Primary Color Printing Factory", has developed this mimeograph. Its principle is to create a mimeograph template by carving patterns on wax paper so that the ink can soak in the past. This wax paper can be engraved by hand, or a special wax-chiseling and typing mechanism version.

The mimeograph uses quick-drying ink and at the end there is a heating process to allow the finished product printed out to dry completely and not dirty at the first time. It can be a very professional copying through a special plate making typewriter. This will be a very popular small batch printing machine, especially suitable for printing temporary materials for students, with a total of dozens of copies. If the amount exceeds dozens of copies, the wax paper plate will become blurred. It is very important to use a plate making typewriter to re-made the plate. In this way, printing dozens to hundreds of copies, or even thousands of identical materials at extremes is an easy task.

Downing's products in the office field are becoming more and more abundant. This kind of suitable administration is rented for public mimeographs of 120 pounds per year, but it is designed to require transfer and heating of electric drive motors, so it has not been sold yet. Shortly after the Sewage Treatment Committee decided not to reserve space for underground cables, Downing had no choice but to increase the space he wanted at his own expense. However, in this way, the right to use this space will belong to him in the future, and it is good that he can monopolize the underground cable network in London. If others want to build such a network, the cost will be high. Downing now takes a bigger advantage by digging sewer kung fu to start the project. Of course, even if someone was jealous at that time, it would be useless. The sewer was originally started after Donning donated 1.5 million pounds, so it is natural to take advantage of a little.

After nearly a year of research and development, Faraday Electric Power has a preliminary power system, wind turbine, cable wire, inverter, rectifier, transformer, socket, and AC motor. The power network in the City of London and Westminster District is being built, and London is about to usher in the electrical era. The most important application of the electrical era is lighting. During this period, the "General Electric Company" established by Tangning has also come to an end in the integration of light bulbs, including controlling tungsten ore, filament production line, glass cover production line, nitrogen separation process used to prevent tungsten wire oxidation, lampshade design, etc.

In these links, the separation of nitrogen is the most important. Relatively speaking, nitrogen is an inert gas, and the content in the atmosphere is as high as 78%, which is inseparable. The second gas is 21% oxygen. The separation of these two gases is the most important.

Many people know that activated carbon can be used to adsorb impurities in gases. An engineer named House in the London Sewer Governance Committee proposed to use activated carbon to absorb impurities in water vapor and gases. Carbon molecular sieve can also be used to separate air. The secret lies in the pore size of the carbon molecular sieve. When it is between nitrogen and oxygen and close to the diameter of the gas molecules of the components to be separated, the diffusion rate or adsorption rate of the mixed gas in its pores is different, thereby achieving the separation of gas.

There are many raw materials for producing carbon molecular sieve, such as coal, resin, and fruit shell and core. Resin with a relatively single composition is the best raw material for making excellent molecular sieves. Carbonization is the key to forming pores. It is a process of heating raw materials under inert gas conditions, that is, small molecules, escape from molecular pores in carbon-containing material matrix, forming pores and increasing surface area. The main factors affecting the carbonization process are the heating rate, the carbonization temperature and the constant temperature time. Using resin as raw materials, when the temperature is controlled between 500 and 1100 degrees and the heating rate is less than or equal to 10 degrees per minute, 0.3 to 0.6 nanometer carbon molecular sieve can be made, which has a good separation effect on nitrogen and oxygen.

The by-product produced by carbon molecular sieve, pure oxygen, forms important welding and metal cutting gases with acetylene.

Back to the topic, building a machine calculation machine using Lego building blocks and group cooperation can greatly reduce the difficulty of the project. From then on, Babbage no longer has to worry about his changing thoughts. Part production and reorganization are not a problem. It can be said that Associate Professor Tangning helped him solve the biggest engineering problem, and using this production method also clarified many ideas for Babbage. Each group can even build parts according to his own thinking method, as long as the results are in line with the principles of the machine. Everyone has high firewood, and Cambridge students can often come up with solutions that exceed Babbage's original idea to make the machine faster and lighter.

Today is just the first exercise of this engineering method. The busy students have shown their own strategies and taken their own actions, which has allowed Professor Babbage to see unprecedented hope.

This is the serious thing about Downing having dinner with Cambridge students.

Naturally, most literary and art lovers from Little Dutch House do not know the principles of this computer, and it is difficult to understand, but they also know the huge technological and engineering significance of this machine. Computers, machines that can actually free humans from calculations. A girl even looked forward to the future without having to learn mathematics, and was ridiculed by everyone.
Chapter completed!