"It's unbelievable, this thing actually flies!"

If the sight of the airship taking off into the sky was extremely surprising to the wizard, then it was a shock to the townspeople who were watching!

Because everyone knew Lydia, a halfling who was usually noisy and always liked to tinker with strange things.

The most important thing is that she, like all the ordinary townspeople present, does not know any magic.

And now, Lydia was right in front of them, driving something bigger than a house, flying straight into the sky, doing something that even many wizards could not do!

"Dad, can I fly to the sky in the future?" The boy who had just climbed up the sculpture to touch the airship looked at the man in the gray robe and asked excitedly.

"What are you thinking about? I'm sure some wizard has secretly cast a spell on the airship..." The man in gray robe didn't believe that a halfling could fly by his own strength. In the land of wizards, all miracles are the power of magic.

"Who said it was magic?" Darren was immediately unhappy when he heard this, and corrected him angrily. "I guarantee that every part of this airship was made by us halflings, without using a single bit of magic!"

"When Lydia comes down from the sky, you can also go to the airship to take a look..."

"As long as you pay ten silver coins, anyone can take a ride on an airship for a spin in the sky. I heard from Lord Lin that this thing can fly very high, even higher than many clouds. If you have the chance, you might even be able to touch the clouds in the sky." Darren said complacently.

Can it fly higher than the clouds? The children in the square couldn't help but look up at the sky, watching the huge airship getting farther and farther away from them, and imagined what it would feel like to touch the clouds. It was so white, and it must be as soft as sheep's wool, right?

The other townspeople were also somewhat tempted. Such a huge alchemy machine must be very expensive. It only costs ten silver coins to fly up to the sky for a tour. It doesn't seem too expensive...

You know, that's the sky! At the same time, hundreds of meters above the sky, Lydia was standing on a special chair, looking down, watching the dense crowd in the square getting farther and farther away from her, turning into small dots, and finally the whole picture of the port city appeared in front of her.

Everything seemed so small, just like the wooden models she kept in the workshop, as if they could be crushed with one foot.

"Is this what it feels like to fly into the sky? It's so awesome!" Lydia looked around, then excitedly gazed at the distant mountains and the vast sea.

Although she had taken to the sky in a simple aircraft more than ten days ago, the height was only a few dozen meters, and she did not dare to be distracted at all.

It's not like now, there is no need for her to control it, the airship can float in the air spontaneously, and she can do whatever she wants here.

Suddenly, a strong wind blew, and the originally stable airship began to sway slightly in the wind.

People who fly into the sky for the first time often feel an inexplicable fear in their hearts, but Lydia was not afraid at all. Instead, she bravely climbed to the edge of the airship, spread her arms, faced the strong wind, and screamed to vent her excitement.

It was not until she saw a white cloud floating not far from the airship that Lydia had a bold idea in her mind. She jumped down and sat back in her seat, holding the rudder and driving the airship directly towards the cloud!

The huge airship crashed head-on into the cloud and passed through it. Lydia's eyes were covered with white, and her cheeks and arms were wet. It felt like she was standing on the beach and being blown by the melodious sea breeze.

"This must be a happy cloud!" Lydia said with a smile.

However, while playing, the half-orc girl did not forget the task Lin En assigned to her. After driving the airship around for a while, she hovered above the square again and then pulled the wrench next to her.

The wooden board at the bottom of the airship immediately popped open, and two spheres with a mass difference of dozens of times fell from the cabin. However, due to the restraint of the ropes, they remained suspended in the air, swaying constantly from side to side, pulling the airship to tilt slightly.

Then the half-orc girl pulled the alchemical eyepiece in front of her eyes, stuck her head out and waited for Lin En's gestures and orders.

This eyepiece is the only magical item she carries. It has a long-sightedness magic that makes her vision as sharp as a griffin. She can clearly see Professor Lin in the crowd even at a distance of two kilometers.

…

"It looks like the next issue of Magic Weekly will be a big seller!"

Ten minutes ago, Roll, who was in the square, drew the illustration with great satisfaction, and added his own feelings at the bottom. He already had a rough estimate of the sales of the newspaper in his mind.

Lynn leaned in to take a closer look. There were three pictures drawn on the papyrus, showing Lydia boarding the airship, cutting the rope, and flying into the sky.

Although time was limited and only a few outlines were sketched, the picture was already lifelike. The sketching technique was no different from that of a human printer. No wonder the other party could become a specialist of "Magic Weekly".

After such a delay, the airship had already flown high into the sky and looked like a small dot from this side.

"This is too high!" Theodore looked up in amazement at the airship that was still climbing into the sky. At first he thought that even if this thing could fly, it would only be a few hundred meters high at most. He didn't expect that in just a short while, the airship's height had exceeded two thousand meters.

Fortunately, the practice of farsightedness magic is not difficult, and most of the wizards present know it, so they can still see clearly even from such a long distance.

The airship stopped after rising to an altitude of 2,500 meters, and then used the thrust of steam to drive the propeller at the rear of the cabin and slowly moved forward.

Not only can it fly, but it can also drive, and it drives very steadily!

"This height is probably beyond the attack range of most magic." Tik looked at the floating airship from afar, his expression becoming a little solemn.

In a sense, this thing is a weapon of war. With two magic crystal cannons hung on it, it can carry out long-range attacks.

If twenty airships equipped with magic crystal cannons launched an air raid on the port of Yieta, without the intervention of the great wizard Hellram, the entire city would undoubtedly be reduced to ruins.

"What an ingenious design, perfect and terrifying..." Hellram was also very aware of this. He turned his head and glanced at Lin En, and asked again. "The design of this airship should not have been completed recently, right?"

If the crude flying vehicle made by Lydia half a month ago could be seen at a glance as a crudely made prototype, then this airship now is a finished product.

"Yes, this airship was designed by me and several friends from the [Arcane Society], but it is difficult to find a suitable place for experimental flight within the territory of the Sekas Empire." Lin En explained, and praised the Wizarding Land a little.

The wizards present nodded in agreement. In the Sekas Empire, wizards were hunted, so how could they dare to conduct flight experiments so openly?

"Since you have never tried it, how can you be sure that it can fly?" Tik asked in confusion.

"Of course, because I have already calculated it in advance using Mathematical Olympiad!" Lin En said straightforwardly. "As long as you know all the data and do precise calculations, there is no way you can go wrong!"

Before conducting this flight experiment, he had roughly verified by weighing objects of different masses that the gravity of this planet is almost the same as that of the Earth.

The height to which the airship is now rising is exactly the same as he predicted. All these data can be derived in advance through Olympiad mathematics.

"Olympiad Mathematics..." Tik murmured this term which he had never known before. It seemed that this time, in addition to issuing official wizard medals, it was also necessary to learn more about this thing called Olympiad Mathematics. He felt that it should be very important for alchemy.

Professors including Kevin and Philip thought that what Lin En said was a bit too absolute. Could it be that the so-called Mathematical Olympiad can really calculate everything?

However, he couldn't refute it at this moment, because the airship in front of him was the best proof!

At the side, Luo Er took out a pen again and wrote down Lin En's words, preparing to enlarge and bold it and put it as a title on one of the pages of Magic Weekly.

"Master Heran Ram, could you please cast a spell to temporarily turn this square into sand?" Lin En stared at the sky for a while and suddenly spoke.

"Okay, but can you tell me the reason?" Helram asked puzzledly.

"Now that we're high enough, I plan to take this opportunity to do an experiment. If it were flat ground, the noise would probably be quite loud!" Lin En said calmly.

"An experiment?" Hellram paused, but quickly reacted to what Linn said. He immediately used the sound amplification magic to order everyone present to step back twenty-five meters and leave a wide enough space in the middle.

A great wizard spoke personally, and no one dared to disobey. The townspeople present moved back one after another, and a circular area with a radius of 25 meters was soon left in the center of the originally crowded square.

Hellram first released a large magic barrier to prevent any accidents, and then cast another spell. The solid floor tiles in front of him quickly cracked under the effect of magic, and finally broke down into countless fine grains of sand...

Lin En took this opportunity to turn his head and look at the wizards and townspeople gathered in the square, and used the principle of sound wave transmission to increase his volume.

“Everyone, I believe that you have all heard more or less about my law of free fall and planetary theory in the past half month.

I believe that many of you must have doubts about this, thinking that it is an absurd fantasy and a lie to attract attention. How can the continent be round? How can a piece of iron and a stone fall to the ground at the same time?

But I have to say here, don't be fooled by the appearance of things. The phenomena you see every day are just the effects of wind resistance. In fact, if the factor of air resistance is eliminated, the speed of an object's free fall has nothing to do with its weight or shape! "

"Are you questioning Master Yade's theory?" A young wizard in the crowd interrupted.

It is almost common sense that the falling speed of an object is proportional to its weight and will also be affected by different shapes. There are too many examples in reality to prove that Master Yade's conclusion is correct.

"Then why don't we make a bet?" Lynn raised his voice a little.

"Ten minutes later, I will have Lydia lower the airship to about 40 meters, and then drop two iron balls of very different sizes and masses from the sky at the same time!"

"Their weights differ by dozens of times! But I bet the two balls will land at the same time, with no more than a second between them!"

"The stakes are tentatively set at three magic gold coins, and anyone can participate!" Lynn said with a smile.

The purchasing power of three magic gold coins is equivalent to 50,000 to 60,000 yuan in the previous life. It is not a small amount for a wizard, but it is not enough to make him suffer.

The young wizard threw three gold coins over without thinking twice.

If Lynn was not lying, according to Master Yad's theory, the heavier iron ball must fall much faster than the smaller ball.

There were many people who thought the same as him, so in just a few minutes, more than 20 wizards participated in this gambling. Raw was no exception. He had deep doubts about this theory.

Many townspeople were also eager to make a move, but not many dared to participate in the wizard's gambling.

"What about you? Are you planning to give it a try?" Lin En turned to look at the students in the Olympiad Mathematics class behind him and asked jokingly.

Pierce and others hurriedly shook their heads, and Alok shuddered. The last time the professor opened a gambling game, he almost lost wealth comparable to the entire Yieta port.

In the blink of an eye, sixty-nine magic gold coins were in hand. Lin En felt a little emotional. It turned out that it would be impossible to get rich just by getting a salary.

However, he used the airship to conduct the free fall experiment not only to make money, but more importantly to justify his own theory!

Although on the first day of arriving at Yieta Harbor, he confirmed this in the academy by relying on the vacuum field created by Helram.

But it is too difficult to create a vacuum environment. Only great wizards can do it. Therefore, this conclusion is only spread in a small range. Most people prefer to believe what they see.

So Lin En is going to take advantage of today to thoroughly prove this theory with an experiment that no one can refute! 　Thanks to book friends Hun Dun Mouse and Ciealer for their 600 Qidian coins, You Are Really Lonely for their 200 Qidian coins, and book friends 20181216112649405, Weird if Not a Reader, and Kan Ni Yan Ran Yi Xiao De Side Face for their 100 Qidian coins.

(End of this chapter)