Page 41
From takeoff to floating to driving, it is very stable, and the exterior design is also very sophisticated, it should be a very sophisticated technology.
"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 decided to take advantage of today to conduct an experiment that no one could refute to thoroughly verify this theory!
Chapter 74 You and I are one step closer to the truth
Under everyone's gaze, the airship began to slowly descend and soon hovered forty meters above the square.
All the wizards in the square and the townspeople with good eyesight could see the two spheres hanging at the bottom of the airship.
The former is about half a meter in diameter and is made entirely of metal. It is pulled by a thick cowhide rope. The rope is stretched so tight that it seems like it will break at the next moment.
The other sphere is only one-third the size of the former. Even the naked eye can see the huge difference in mass between the two!
Lin En waited until the sea breeze gradually weakened and the airship was finally hovering steadily before he picked up a red flag and waved it a few times.
In the airship above, Lydia, who was standing on a stool and lying on the edge, also waved her flag in response...
"Let's begin!" Lynn said.
The eyes of everyone present were now focused on the two spheres floating at the bottom of the airship.
As Lydia pulled down another wrench, the two ropes were immediately cut... Two iron balls fell at the same time...
"The bigger one is faster, the bigger one is faster!" the young wizard shouted excitedly. With the help of the farsightedness magic, he could clearly and accurately see that at the moment the rope broke, the big iron ball fell first!
However, the excitement on the wizard's face was stuck the next second, because after the big iron ball fell, it did not go as fast as he expected, but instead kept a very close distance with the small iron ball.
Rather than saying that the big iron ball fell faster, it would be more accurate to explain that the rope binding the big iron ball became tighter, which caused it to fall a split second faster.
Lin En was not worried from beginning to end, because he had carefully calculated the data of the two iron balls. Although the mass of the large ball was greater, its windward surface was also larger and would be subject to more wind resistance.
Sure enough, in the second second of falling, the heights of the large and small iron balls were still almost the same.
"This is impossible, this shouldn't be right!"
The wizards who saw this scene had expressions of disbelief on their faces, and some even suspected that Lin En had secretly cast the [Slow Fall Spell] on the big iron ball, which caused such an amazing effect.
Just as he was thinking this, a huge iron ball weighing half a ton smashed directly onto the square.
In an instant, the entire square seemed to shake. The huge impact force caused the big iron ball to embed deeply into the sand at the moment of its fall. The surrounding quicksand exploded at the moment of its fall, like continuous sand and stone rain, scattering in all directions.
An invisible magic barrier surrounded the center of the entire square, and sand and stones hit the barrier, making crackling sounds.
Out of trust in the great wizard, not many people paid attention to the flying sand and stones, and everyone stared at the two spheres in the center of the square.
The heavy iron ball has smashed deeply into the center of the square, and the displaced sand and gravel have formed an impact crater with a radius of about three meters. The surrounding fine sand is still constantly accumulating inside.
Below the other small iron ball, the impact crater was only a few dozen centimeters in size and was quickly filled with sand and rocks.
Just as Lin En said just now, the two spheres with a mass difference of dozens of times crossed the distance of 40 meters and reached the ground almost at the same time...
But how is this possible? Shouldn't the heavier one hit the ground first?
"Professor Hellram, can you let me confirm this?" the young wizard asked anxiously.
The great wizard did not answer, but turned to look at Lin En. When he saw the other party nodded, he removed the magic barrier.
The wizard ran over immediately, not minding that his ankles were stuck in the sand. He squatted down and picked up the small iron ball, which was only the size of a palm, with one hand and threw it.
"It's really light!"
The wizard spoke thoughtfully, roughly estimating that the ball weighed only about twenty kilograms, and there was no trace of magic on it.
Could it be that there is something wrong with the larger iron ball?
The wizard, who didn't believe in evil, immediately put the small ball down, squatted down and tried to lift the large iron ball with a diameter of half a meter. However, no matter how hard he tried, he couldn't move it out of the sand.
Hiss~ How heavy is this thing?
The young wizard couldn't help but be amazed, and then he was sure that the other party did not cut corners.
“If anyone still has doubts, feel free to go up and confirm it.” Lin En said nonchalantly.
With Lin En's approval, wizards and even townspeople who had doubts about the experiment stepped onto the sand and used their own hands to test the weight difference between the two balls.
Just as they saw visually, the difference between the two was dozens of times, and only a few shaping wizards could lift it.
In the end, it was Hellram who used the [Hand of the Mage] to pull the thing out of the sand and weighed it in his hand.
"About half a ton!" Hellram pondered for a moment and made a relatively accurate judgment.
Philip, Kevin, Theodore and the others looked at each other, unable to hide their shock. What Lin En had just said about the quality difference of dozens of times was really too conservative. This was already a full twenty-five times difference!
"But this is so strange, why is it like this?" Luo Er looked at Lin En in confusion. He didn't care about the three gold coins he lost, but he was very surprised by this phenomenon that went against common sense.
He saw with his own eyes the horrific damage caused by the big iron ball when it fell to the ground. One can imagine its weight, but the falling speed of the two iron balls was exactly the same.
This is not magic at all!
"Let's make an assumption and we'll know." Lin En looked at the puzzled eyes in the square and raised his voice. "According to Master Yade's theory, the falling speed of an object is proportional to its weight. Isn't that right?"
Luo Er and others nodded, and Lin En changed the subject, pointing at the two spheres and spoke.
"If I tie this small iron ball and the big iron ball together with a rope and then drop them from a high altitude, do you think it will fall faster or slower?"
"Of course it's faster, because the overall weight has increased..." Roll answered without hesitation.
But the next second, several wizards objected. "No... it should be slower! The mass of the small ball is much lower than that of the big ball, and its falling speed is also much slower, so it will definitely slow down the falling speed of the iron ball."
"If the big iron ball takes four seconds to fall and the small ball takes nine seconds, then if the two are tied together and dropped at the same time, the final landing time should be between four and nine seconds."
Before Lin En even replied, the wizards from both factions had already started arguing. Johnny, Alok and the others were listening and felt that what both sides said seemed to make sense, yet contradictory...
"The answer is... almost no change!" Lin En interrupted the argument.
"How could there be no change!" Philip frowned and shouted, but he paused as soon as he finished speaking, because the falling experiment just now proved that the falling speed of an object has nothing to do with its weight, at least it is far less than they expected.
"Mr. Roll, can you give me a blank piece of paper?" Lin En knew that many people present still had doubts, so he looked at Roll and asked.
"Of course." Luo Er took out a piece of paper from his arms and handed it to Lin En, very curious about what he wanted to do.
Lynn turned to look at the townspeople, holding up the paper. "Can someone give me a book that's slightly wider than this piece of paper?"
Amid the noise, a child donated the storybook he had been carrying with him.
Lin En activated the [Mage's Hand] and sent the piece of paper and the storybook to a height of two meters, letting them fall together.
The paper pages floated slowly in the air and took four full seconds to fall to the ground, while the storybook fell to the ground in just one second.
"What are you doing?" Philip asked in confusion. Doesn't this phenomenon just refute his theory?