Chapter 206

A few days later, during a lunch, Harry Potter received a Nimbus 2000, making other first-year students envious to the point of splitting.

As a result, Gryffindor had the youngest Seeker in a century.

Due to the pressure of Quidditch training, the opportunities for him and Ron to fish for information from Hagrid were not so many. Ron, who was idle, also joined Murphy's research group in order to get a new wand.

However, Ron's math level was far behind Hermione and Tom, basically only doing the simplest work: being a tester.

Ron was quite happy in it. After all, being a tester only needed to listen to orders, which was much better than Hermione and Tom needing to gnaw on Muggle math books of mathematical statistics all day until they were dizzy.

Moreover, Murphy also promised him that after the research was over, he would give him a new wand for free.

In the next month, the four-person group lived very fulfilling lives.

Not to mention that Harry had a Quidditch training in addition to his schoolwork, Ron also needed to come to Murphy to be a tester after school every day or on Saturdays and Sundays, using spells countless times a day, and his spell level also rose, becoming the fastest progressing student in the Charms class besides Hermione and Tom.

And Hermione and Tom didn't need to say more. They had to take care of their schoolwork, take care of wand testing, learn math, and complete the learning tasks of the group project—about ghosts and Legilimency, etc. In addition, they were secretly concerned about the secret behind the trapdoor.

And Tom was even investigating his own background.

Murphy sometimes saw it in his eyes and felt tired for them.

When he was in school, he didn't work so hard.

The burden on this year's students is really too heavy.

But Murphy didn't have any idea of reducing their burden at all.

Who told you to be geniuses.

Being a genius, you must work harder than others, otherwise, wouldn't such good talent be wasted?

In mid-October, Murphy basically completed the construction of the wand principle.

He held the ninth group meeting.

"In the past month, we have figured out quite a few things through various experiments."

"First, through the magic power test of using the wand or not, we verified that the wand is a magic power amplifier. But at this time, we don't know the mechanism of this amplifier."

"Second, through the test of the wizard's surrounding magic power, we found the fluidity of magic power. That is, in a static state, magic power will naturally overflow, but when needed, magic power will concentrate according to the wizard's will."

"When releasing a spell, magic power will concentrate from all parts of the wizard's body to the arm, and then be fired out through the wand."

"Third, along the context of the fluidity of magic power, we found the first mechanism of the wand as an amplifier: we verified the magic power tip conjecture."

"Miss Granger proposed through the observation of magical creatures that the parts where most magical creatures release magic are some tip positions. For example, horned creatures usually use their horns to release magic power, and the magic power tip helps to concentrate magic power, increase the concentration and intensity of released magic power, make it break through the original boundaries, and strengthen the effect of magic power."

"The wand is a man-made magic power tip."

"It can concentrate the wizard's magic power, making it reach several times or even dozens of times the intensity of the normal state. At the same time, this concentration effect will make magic power more emitted in the form of light beams and jets, making magic power less likely to overflow, greatly increasing the range of magic power."

"This characteristic also makes spells released with a wand mostly single-target directional spells."

"But the magic power tip conjecture cannot explain non-directional spells, such as Apparition, Accio, Revelio, and various summoning spells. After all, in some cases, such as Apparition, it may need to cross a distance of tens of kilometers, and the wizard's magic power cannot extend so far."

"So, we proposed the magic antenna conjecture. This is the second mechanism of the wand amplifier."

"Non-directional spells, we guess their occurrence method is directive. That is: the wizard proposes an instruction, and the world's magic power is responsible for realizing it."

"And the one that sends instruction signals to the world's magic power—we call it the magic net—is through the wand. It is equivalent to a signal amplifier at this moment."

"So, now we have two parts of conjecture about the wand: the magic power tip conjecture applicable to directional spells, and the magic antenna conjecture applicable to non-directional spells."

"Based on these two conjectures, we can make an inference about the performance of the wand."

"According to the magic power tip conjecture, the role of the wand is to constrain and concentrate the wizard's magic power, making it higher in concentration, stronger in intensity, longer in range, and more accurate in precision."

"At this time, we can look at the wand as a water pipe or a gun barrel, and magic power is the water flow or bullet sprayed through the wand."

"In theory, the thicker the water pipe, the more dispersed the water flow; the thinner the water pipe, the more concentrated the water flow, and the greater the pressure."

"But at the same time, from the wizard's body to the wand, if the pressure is suddenly increased, it will also cause greater pressure on the pipe wall, and exceeding a certain limit may cause the wand to be shattered by the impact of magic power."

"Therefore, the wand usually needs a gradual conical structure, with the handle part thicker and the tip thinner, gradually concentrating the magic power."

"In terms of precision, the longer the gun barrel, the more accurate the trajectory of the bullet, but an excessively long gun barrel will also lead to more overflow and waste of energy."

"There is also a balance in this."

"On the other hand, according to the magic antenna conjecture, the role of the wand is to transmit and receive signals, and it is a signal amplifier. And magic signals—whether they are in the form of ether or elements—are a kind of wave."

"All things in the world are waves. Magic power is hard to be an exception."

"We proved this point through interference experiments."

"And as long as it is a wave, it can be described by four physical quantities: wavelength, frequency, amplitude, and wave speed."

"The wave speed of magic signals is very fast, and our test has not yet touched its upper limit, but it is likely to be the speed of light."

"Its frequency and wavelength depend on the intensity of magic power. The stronger the intensity, the shorter the wavelength and the higher the frequency. This is similar to electromagnetic waves. The amplitude depends on the amount of magic power. The higher the energy of magic power, the larger the amplitude."

"After understanding the similarity between magic signals and electromagnetic waves, we can refer to Muggle antennas to design wands."

"When the length of the antenna is one-quarter of the wavelength, the signal is the best."

"And after our test, with the magic power intensity of wizards, the signal waves emitted are often close to medium-short waves. The stronger the wizard, the stronger the magic power intensity, the shorter the wavelength. The wavelength of young wizards' magic power is close to medium waves, while ordinary adult wizards' signal waves are between short waves and medium waves, which is a wavelength of nearly 100m."

"If calculated according to this, the wand should be nearly 25 meters long to be suitable."

"But the wand obviously cannot be that long, so in terms of signal strength, the wand should be the longer the better."

"In fact, ancient wands were indeed extremely long."

"Just query a few books of 'History of Wand Development' in the library and you will find that early wands were simply a cane two meters high."

"Its interior uses magical metal as a wire, and the head or core position uses various precious gems as magic power nodes to enhance the power of the wand."

"At that time, wands were not only extremely expensive, but they could indeed be swung around as a club."

"Later, through the research of countless wand-making masters, the main material of the wand core was gradually replaced by more lightweight magical animals and plants, and the wand became lightweight."

"But here a problem arose. How did our current wands, which are so short, possess signal capabilities not inferior to ancient wands?"

"Muggles' antennas actually don't look long either. This is because many antennas use inductive technology, that is, adding induction coils at some positions of the antenna to shorten the physical length of the antenna. Sometimes they even use spiral coils directly as antennas."

"And after our dissection, we found that the wand core actually has a similar structure!"

"The wand core is the wire of the antenna. Before processing, the wand core, such as dragon heartstrings, phoenix tail feathers, unicorn hair, etc., often does not exceed fifteen centimeters in length, but after being fused with the wand body through the fusion magic potion, its whole body grows like roots and is coiled and grown together with the wand body, greatly increasing its overall length."

"The knots and rings formed between the roots are magic induction coils, and countless roots in parallel form an antenna array, greatly enhancing the signal of the wand."

"These structural changes can make today's wands shrink to about ten inches."

"We don't know if those wand-making masters understood the magic antenna theory, but they did complete this technological progress through the groping of countless generations."

"However, we can still raise the strength of the wand to a new level on the basis of the achievements they have already made, relying on the wisdom of Muggle technology."

"For example, a wand can be seen as a kind of rod-shaped omnidirectional antenna, the signal overflows quickly, and the propagation range will not be very far, but what if we change it into a directional antenna? Can we therefore realize cross-continental Apparition, flying spells in a range of several kilometers?"

"Another example, although the natural growth of the wand core will form an antenna array, because it is not designed, the radiation pattern it forms is very chaotic, signals interfere with each other, and gain and cancellation effects exist at the same time, greatly weakening its signal strength."

"If we can control the growth of the wand core and make it constitute a regular antenna array, the signal strength of the wand will definitely be greatly improved."

"Next, our research will be carried out in two parts."

"Tom and Hermione, you use the modeling knowledge you learned recently, analogize fluid mechanics, and complete the design of the wand body. Of course, if you have spare energy, you can also consider some simple antenna design ideas, such as spiral coil antennas, etc."

"And I am responsible for the design of the directional fusion potion and the wand core structure."

These two pieces involve extremely profound magic potion knowledge and powerful modeling and calculation capabilities. With the current level of the two little ones, they cannot participate at all.

"Professor, what about me?" Ron asked.

"You..." Murphy thought for a moment, and really didn't think of any work Ron could do, "Go make me a cup of tea."

(End of chapter)