Experimentation and practicality are not the same thing, the former is to explain the world and plan for the future; The latter is to change the world and be based on reality.

Most of what these labs can make is a one-off thing, and it is impossible to promote it practically. But there are also some things that can be done in ten or twenty years, and this will change the world dramatically.

If you want to take the path that is terrifying and makes people feel that the world is really different from before, you can only take the sword.

Containing things that were planned before and things that were not planned before, Chen Jian thought of many things that could be done by craftsmen and craftsmen that could be amazing.

Model steam trains, buildings, flush toilets, experimental electric lights, railcars, paddle steamer models, vulcanized rubber tires, human-powered hydrogen balloon airships, experimental silver iodide silver bromide photography, biogas digesters, experimental iron structure short bridges, battery wired telegraphs, rubber-soled cloth shoes and rubber rain boots, earth-based penicillin topical extract, handmade thermos at any cost, double-laminated rolling bearings made by craftsmen, compressed air guns with experimental manual pumps, male rubber sleeves for vulcanized rubber, Female intrauterine rubber cap......

These are practical things, but they don't work now, but they point the way to the future and surprise all visitors to the greatest extent possible with the current state of technology.

And whether the practical technologies that are being researched and have invested a lot of money and time will be successful in three or five years is not of great significance to the exhibition, so it does not have to appear in three or five years.

Improved steam engines, boring machines, marine clocks, looms, and horse-drawn tassel cutting machines are things that are based on realistic technology and craftsmanship, and can be popularized as soon as they appear. And there is no need for promotion at any cost, capital will flow spontaneously to these places, thereby accelerating the transformation of economic relations.

The main craftsmen of each laboratory may not understand many truths. The main young people in each laboratory are all grown up in Nan'an School and Lanxiang School, and have received systematic education in the natural knowledge of the textbooks written by Chen Jian.

These two kinds of people join forces and try according to the map, and it is not necessary to know all of them, but the one-off exhibits that Jian Chen envisions can be made at any cost, and many things are by-products of research products that can be practical.

Some take three years, others don't take that long to try; Some are just a layer of paper separated by the principle, and some are clear about the principle but it is extremely troublesome to do. It's all different.

Even though there are still many things to be solved in Mincheng now, Chen Jian still used two months to list the things in these plans one by one, and distribute them in advance according to the different time and strength required. And those things that can be made as soon as possible without long-term trial and with enough raw materials can be delayed until a year or two later before money and energy can be invested - such as vulcanized rubber products and experimental silver iodide silver bromide photography.

His brother was right, he wasn't really a person who wanted to know the world, or he had learned how to know it.

All he wants is a sensation akin to a "miracle", overkill to bring science to some kind of "altar".

In the past two months, it can be regarded as the fulfillment of Mr. Mu's longing, except for the internal meetings that must be attended, it can be regarded as almost ignoring the outside of the window, closing himself in the room, and writing those various strange and ingenious novelties within three years.

There are difficulties, and there are difficulties.

For example, the flush toilet, which is relatively simple to explain and is not troublesome to do.

Simple buoys, ball valves, buoyancy levers, inlet pipes plus outlet pipes. This is followed by some simple notes that young graduates can understand, such as the transformation of potential energy and kinetic energy. If you can get a combination of vulcanized rubber leather rafters, bristle brushes, and the like, it's perfect.

For example, the experimental kettle, which is made by hand at any cost, is not very difficult, but it is a little troublesome to explain.

The manual vacuum pump, which comes together with the vacuum copper ball test and the carbon wire lamp, ensures that the air between the two layers of glass is basically clean. The existing mirror silver-plated technology, after trying to get out the silver-plated inner liner glass, is not a big problem, it is nothing more than trying to start silver. Not to mention cork, which is less difficult.

However, it is not difficult to do, but it is very troublesome to explain, and it requires a complete set of cooperation.

So that the craftsmen could understand, but that the young people who participated in the experiment, who had been educated in the school, who were fashionable and laboratory helpers, could know what it was and why.

For this reason, he also needs to explain the three heat transfer processes from shallow to deep. For the time being, there is no need to explain the irregular motion of molecules or anything like that, just to summarize three different forms.

Conduction, radiation, convection.

Conduction can be explained by hot wine in a tin pot and tea in a porcelain cup, and at the same time, it is summarized that this is a way of heat transfer.

Add to this the fact that the existence of air, the vacuum, and the invisible air are not the same thing, which has been experimented with eight years ago and written into some natural common sense books in schools controlled by the party, to explain why the air in the glass interlayer is extracted.

Radiation can be explained by the temperature at which two different colors of white and black are exposed to the sun, or by adding mirror reflections, iron hooks that do not need to burn red to feel heat, heat that is not necessarily visible light or something that cannot be seen, etc. This explains why it is reflected in the silver like a mirror.

Convection is explained by the problem of stoppers, which is much simpler, Kong Ming lanterns have been played for hundreds of years, and a glass bottle filled with water and wood chips is heated on the stove to observe the convection up and down. This explains why a cork stopper is added.

After these time-consuming and laborious things are completed, the young people involved in them should learn a lot and understand a lot of why.

A whole bunch of questions can be derived from the thermos, and some examples can be given as questions to ask them to think about whether it is conduction, radiation or convection, or let them observe the rest of the heat conduction methods in nature to see if there are other ways than the three types of induction, and by the way, let them understand more intuitively what the concept of induction is.

Of course, things like cable telegraphs and carbon wire lamps are very simple to explain, but extremely cumbersome to actually operate, and it takes a lot of time to try.

In addition to these kinds of things that are either extremely simple to explain and operate, or difficult to operate and explain, there are also some things that do not need to be explained or are not clear to explain, or the significance of explanation is far less than the actual operation.

For example, the model of a steam train, this thing sounds scary, but with the current level of craftsmanship of these craftsmen, it is not difficult to make various parts and components at all.

It is not coal-burning, the small model burns coal and wastes time, and it can burn alcohol or kerosene; You don't need much power, you can have an arm's length, and you can pull yourself to swing on the carefully crafted toy rails; There is no need for advanced processing technology, and most of the components can be basically completed by filing, hand drilling, steel tongs and lost wax method.

Making a model is definitely different from making a practical machine, many practical machines require high conditions, and the model can not be so harsh, to ensure that it does not explode, and can run.

The internal core components and model dimensions do not need Chen Jian to take a file to frustrate. On the other side, a large amount of money has been invested in the research of practical technology to make accurate weights and measures and calipers, which is a precondition for practical technologies such as steam engines and marine clocks, which can at least be much more convenient, with accurate weights and measures and calipers, some parts can be polished and cast by craftsmen.

It takes a long time to ponder and draw, and it can take a year to a year and a half or so of your spare time.

But while waiting for these core models to be ready, the rest of the models can be prepared now.

For example, the rails can be made of expensive brass and carefully polished by craftsmen or apprentices. On the one hand, it does not rust, and on the other hand, it is brighter and more dazzling.

Stations that match the tracks, lead mold figures, model paintings, turnouts, sand tables, etc., can all be made now.

The point of this model is not whether it looks good, or whether it can be scaled up to make a train. The point is that under the condition that the technical level is not up to the level at this time, people can intuitively feel what kind of scene the train will be after it appears, which is more acceptable than describing it with words, especially after moving, it is more imaginative.

In fact, under the conditions of stack, eucommia ulmoides glue, wood paint, lead and sulfuric acid, a simple DC motor is used as the model power; Or pull the wire on the brass model track to make a model of the electric locomotive, and use a simple hand-cranked generator to make an AC model motor that does not need a commutator; It is far simpler than making a model of a steam engine, and it can even be said that it is much simpler.

However, steam is already close at hand, and the model is difficult but practically simple; The electric motor model is easy to obtain, but it is difficult to put it into practice, and it is difficult to be practical without a hundred years of accumulation of material science.

In addition, it is excellent to get an electric light to scare or lure people, and it is far less powerful to use it on a model train or a model power machine, which is far less powerful than lighting a fire or smoking.

This is a reluctant approach, after careful consideration, I still feel that I will continue to try, really a year and a half of this model and precision weights and measures have not progressed, and then change to the simple electric model when the time comes.

As for the remaining things such as silver iodide and silver bromide photography, Chen Jian felt that he should not get it, and leave it to some people as an opportunity to be a golden bone.

This opportunity is fame and money, and it is excellent as a bait for his planned university in Min County to attract talent, and this aspect of fame means nothing to him anyway. 8)