Everlasting Vision from Hogwarts

Time passes slowly in the busy class life.

At the end of the first week, William had not heard from Dumbledore. At the beginning of the second week, he gradually started his nightlife.

Using the invisibility spell and the silent spell, he walked through Hogwarts at night like a ghost. He was in the library, in the training room, in the potions room, and on the outskirts of the Forbidden Forest. .

In his hands, magic has slowly broken away from the current stereotypes of the wizarding world.

Because he had free magic power to use, he began to analyze the surface of magic learning and delve deeper into the inner causes. He did not rigidly follow the spells to fix the magic spells, but studied the principles in depth.

There is no need to know the external aspects of spells, gestures, etc. What he studies is the inner theory of how the spell is cast and why it can be cast in this way.

For example, the Silent Spell is also a senior-level spell. Based on his previous knowledge, he believes that the Silent Spell does not eliminate sound, but isolates sound. Sound is a wave frequency produced by the vibration of objects.

This frequency cannot be eliminated. Unless everything is still, even particles such as atoms, molecules, and neutrons stop moving, otherwise sound transmission will inevitably occur.

The sound produced by beating the drum is because the drumstick hits the drum head, the drum head vibrates, and the air wrapped by the drum head also vibrates. Under these combined effects, the drum emits a deep and solemn sound. When this sound is high-pitched, it can attract people. The fighting spirit stimulates high emotions, so it often appears in big scenes such as wars and sacrifices.

People can make sounds when they speak because the vocal cords in the throat vibrate and emit a wave frequency that can be received by others, so sound communication can be achieved between people.

All in all, the effective transmission of sound must have three elements: sound source, transmission path, and receiver.

Based on the above research content, he recalled a lot of knowledge about sound insulation facilities in his previous life, such as sound insulation walls, echo belts, etc.

Sound insulation walls were mostly used in public transportation pavements and building facilities in the past. They are divided into three applications: pure sound insulation by reflection, sound absorption sound insulation, and comprehensive sound insulation that combines reflection and sound absorption.

Reflective sound insulation and sound absorption sound insulation both change the propagation path of sound, turning the smooth channel that can efficiently transmit sound into a rough one. In this way, the vibration transmission of sound will consume light energy on the rough propagation medium, indirectly reducing Receiver of sound.

William couldn't help but think of a material used in materials science: sound-absorbing cotton.

Sound-absorbing cotton is a kind of man-made inorganic fiber. It uses natural ores such as limestone and quartz sand as the main raw materials, and is melted into glass with some chemical materials such as soda ash and borax.In the melted state, flocculent fibers are blown out with the help of external force. The fibers intersect three-dimensionally and are entangled with each other, showing many small gaps.

When sound propagates in these gaps, energy is converted into heat energy through friction, ultimately achieving sound isolation.

Thanks to his habit of hunting for novelties in his previous life, otherwise who wouldn’t want to see how some materials are made?

So, the theory is established, let’s get started!

William doesn't need to make real soundproofing materials, he has magic, it's the one-size-fits-all material.

First, I experimented with the free magic power to make the magic power porous. After several attempts, I found that the porosities were there, but not enough.

After all, empty imagination lacks data guidance and turns into paper talk.

At this time, William thought of another biological thing: the hive.

Because of the incredible structure of the honeycomb, bees are praised by mathematicians as "genius mathematicians and designers."

Isn’t a honeycomb just a porous material?It’s also very mathematical.

If the honeycomb is reduced countless times, and then this material is used to form a soundproof wall, can it also achieve the effect of sound-absorbing cotton?

Thinking of this, William wished he could immediately have many hives for him to study.

After a little thought, he came up with many ways to obtain hives. The hive itself was not a precious thing, but because Hogwarts was closed to students, he could not buy it from ordinary society.

But there are many ways to get hives in Hogwarts.William chose the slightly more troublesome option.

He planned to use the search for the beehive as a reason to get acquainted with the ranger of Hogwarts: Rubeus Hagrid.

If we can establish a stable relationship with him, it will be very convenient for William's future study and life.

……

The goal of getting to know Hagrid was easily achieved.

William's method of making friends has always been clever. Whether it is skillful communication skills or making friends with fists at specific moments, he can do it at his fingertips.

With the hive, the research on silent spells has progressed rapidly in the practical stage.

Now, William has mastered the principle of making this miniature honeycomb sound insulation material.

As your heart moves, the magic of freedom quietly transforms, reconstructs, and finalizes, and the honeycomb sound insulation wall is completed.

As long as he is within the range of his magical perception, he can make the world silent.

The wind passed silently, and the mouth opened silently. Even if Li Yunlong came over, as long as he was within the range of William's demon control, he would not even think about "firing"!

Silent spell?Can it be used as a "silence" skill in the game?

Most wizards have to recite spells to cast spells. If you cast a silent spell on them, can you silence them so that they cannot cast spells?

This sudden inspiration attracted William's attention.

"Silence" is a magical skill in the game, and it can be called the nemesis of ordinary magicians.What if it also works on wizards?

William couldn’t help but feel excited!

After several hours of research, William came to a preliminary conclusion about the silent spell version of "Silence".

"Silence" is effective for low-end wizards, but it can only have a sudden effect on high-end wizards.

"Low-end wizard" and "high-end wizard" are William's definitions based on the scope of "silence".

Low-end wizards: Any wizard who casts a spell requires chanting the spell aloud and must listen to the sound feedback of the spell in order to cast the spell. These wizards are low-end wizards.

High-end wizard: A wizard who can cast spells silently, or a wizard who is determined and has high magic control ability and needs to cast spells vocally.

You can cast spells silently, and silence will naturally have no effect on them.

And some wizards who cannot cast spells silently cannot be silent, because the reason why they recite spells is to mobilize emotions and guide magic. They achieve the desired effect the moment they recite the spells, and do not need to be like low-end wizards. Likewise, you have to receive sound feedback.

The reason why this research result was obtained was that William used himself as a guinea pig to study it.

He can cast spells silently with his free magic, or cast spells vocally with his wand.

When he casts a spell with his wand, the silence skill has no effect on him, because his own need for spells has been infinitely reduced.

Reciting the incantation just became a fixed step, just like shooting a gun. He only had to press the trigger and the bullet would be fired.

Rather than having to hear the "click" sound of pressing the trigger.