Chapter 132

No one had ever made a fortune from a kindergarten, and the Venetian merchant opened a kindergarten on the spur of the moment, but his mind had already flown to expand the retail business, and he had a good conversation with Downing, a young man, who spared no room to publicize his years of business experience. However, Waldorf's so-called experience is nothing short of pediatric in front of Downing.

It was Downing's turn to play his cards. If Waldorf Astoria is a cheetah, Downing's card is a lions, ordinary consumers are herbivores, grocery stores, department stores, they are just making money from herbivores, and Downing's philosophy is to make money from carnivores. No one thought of this concept at the time, and there was a proper term that could sum up this business model - cash and carry. Cash-for-cash, self-transporting retail and wholesale warehouse-style supermarkets.

Waldorf Astoria, a veteran of the retail industry, knows best that the secret of making money in the industry is not in the profit margin, but in the circulation rate, a commodity with a profit margin of 1% is circulated a hundred times in a year, then the profit margin is equivalent to 100%, and the wholesale industry is more than 100 pieces per transaction? Compared to the petty cheetahs, wholesale is a pack of lions. Why is there an emphasis on cash transactions? This is, of course, to increase the collection rate to 100%, which is the place where the model proposed by Downing beats the ordinary wholesalers, ordinary wholesalers in order to improve the circulation rate, unconsciously use the trick of buying on credit, the collection rate to drop and then fall is a common thing, especially when the economy is in a recession, debts have become the norm, you know, the economic malaise is a blizzard that comes every ten years or so.

Self-transport, free of the seller's logistics costs, this is very important, because the market size is huge, this expense is expensive, to achieve small profits and quick turnover, you have to work hard in important links.

The traditional wholesale separates the point of sale from the warehouse, and there is a period of time between the warehouse and the point of sale, while the warehouse market directly treats the warehouse as a sales shelf, which may be imagined, but few retailers can do it, because the shelves are under and the warehouse is on the top, this design requires a professional forklift to complete this action efficiently. It is difficult for the average retailer who did not invent the forklift capability to imagine such a machine, which is at the same level as the container crane and can significantly improve the logistics capacity.

If Downing had revealed his identity, Waldorf might have been convinced, at this time, he felt that this young man's brain was too big.

In this regard, Tang Ning could only laugh at it, he also had an even more incredible trick to manage a huge number of goods - barcodes. If the forklift is the "butt backward flat sand and goose style" of the Qingcheng faction, then the barcode technology based on the photoelectric effect is the sunflower treasure book. Einstein won the Nobel Prize not because of the well-known theory of relativity, but because of the photoelectric effect.

The essence of electricity is the movement of electrons, and the movement of electrons is limited to a certain orbit, when the frequency of light is high enough, hitting the metal film will make the electrons get escape velocity and leave the original orbit, so ultraviolet rays can detect a strong photoelectric effect. In addition to invisible electrons, there are also invisible ultraviolet rays, and this technology is more difficult to crack. To add insult to injury to the countless people who want to crack the technology of god-level scientists, the photoelectric effect is also accompanied by "photoelectric fatigue", that is, if you simply make an optoelectronic converter, you will find that the photoelectric effect is getting weaker and weaker. This is because the photoelectric effect oxidizes the metal surface, and at the very least, it is necessary to equip the photoelectric converter with a vacuum environment.

In order to detect the electrons produced by the photons, Downing would fill the photoconverter with a noble gas, which would produce an ionization effect when the electrons passed through the noble gas, making the photoelectric effect easier to detect, and if this was not sensitive enough, it could also accelerate the electrons with an electric field.

Such a difficult technique is really worthy of the sunflower treasure book, and wireless telegraphy can only be regarded as a sword technique to ward off evil spirits, and contemporary scientists cannot practice peerless martial arts even if they are in the palace. Maxwell would soon publish Maxwell's equations, which revealed the mysteries of radio, but his theory of light waves contradicted Einstein's theory of the photoelectric effect, and the theory of photons could not explain the refraction and coherence of light waves, so this was a phenomenon beyond scientists' imagination. Even many years after the photoelectric effect was confirmed, many scientists still rejected the concept of photons because the theory of light waves and the support of reality were too perfect and tight.

The mystery of wireless telegraphy is getting closer and closer, and the mystery of the photoelectric effect can be preserved for at least a few more decades, if Downing wills.

With photoelectric converters, there is also a key component is the light source, to produce the photoelectric effect of the light source has requirements for frequency, better is to use light-emitting diodes. A diode, which we have introduced earlier, is a component that allows electrons to flow in one direction, and when electrons fall to a lower energy level, they release energy in the form of light, and the frequency of light depends on the special material of the cathode and anode, semiconductors.

As the name suggests, the conductivity of a semiconductor is between an insulator and a conductor, and only electrons that have obtained enough energy can be excited from the valence band, cross the energy gap and transition to the conduction band, and this process is the process of emitting light. The energy gap determines the frequency of light. Diamonds are semiconductors that can produce ultraviolet rays, but everyone thinks about it, this is too cost-effective, even man-made diamonds are not cost-effective, and there is a substance - aluminum nitride, which is a hexagonal crystal, can also emit ultraviolet rays, and this material can be made by nitriding metal aluminum.

Ultraviolet rays irradiate the barcode, and the light of different strengths is reflected to the photoelectric converter, which produces an electrical signal, which is an analog signal, and then converted into a digital signal, processed by a mechanical computer, and made statistics on the LCD random access memory, and displayed on the LCD display at the same time, and finally stored on the vinyl disk after the transaction is successful, and printed out, the sunflower book is finished. (http：／／）。

The mechanical computer will summarize the inventory of the entire warehouse every day to ensure that all the goods that need to be replenished are discovered, and it is conservatively estimated that tens of thousands of goods can be efficiently managed.

With the support of forklifts and barcode technology, wholesalers who want to imitate Tangning to engage in cash-and-carry supermarkets are like the Fuwei dart game of Lin Ping's family, facing such powerful enemies as the Qingcheng faction and Dongfang Undefeated, and they are powerless to parry.

Taking control of the source of the wholesale industry will go a long way in helping Downing's monopoly on global agricultural procurement, playing South American countries in the palm of his hand, and protecting the Amazon rainforest, the lungs of the earth, has a better chance of winning.

With such a large supermarket, I'm afraid that only a metropolis like London is suitable for the first launch, even if it is not the first one, London will become a flagship store, and Downing even thought of the name of this market--. This is shorthand for the word Metropolis.