Dark?

Raphael and the others paused for a moment, and then felt that all the light in the hall had disappeared, leaving only the skylight on the roof still shining a little light on the high platform.

Everyone's eyes naturally focused on each other, and Lynn's figure soon appeared in front of everyone, with a faint smile on his face. "Ladies and gentlemen, welcome to today's magic seminar."

The seminar hall, which was already a little noisy, immediately became noisy like the scene of a festival celebration, and there were all kinds of discussions, and some people shouted loudly.

"Your Excellency Lynn, there are still a few things I don't understand about the method you proposed to calculate the angle between the center of the earth, and what exactly do cubes, squares, and open squares mean?"

"What exactly is the radius and volume of the planet beneath our feet? Is it 860 billion cubic kilometers or 1230 billion cubic kilometers? ”

"Lord Lynn, did you use some kind of special magic when you said that you weighed the planets? Or is it the same division method as the perimeter? ”

All sorts of questions followed, and in addition to wizards who were curious about weighing methods, there were also wizards who wanted to make sure that their calculations were correct.

Although the calculation is not too difficult for wizards with good brains, each wizard has a different degree of mastery, and the data of a planet is too big, but if there is only one mistake in the calculation process, the final result will be very different.

So after two days of fermentation, thousands of wizards simply calculated several different answers, and almost fought on the spot in order to argue about right and wrong.

"Silence...... Quiet! Now is not the time for questions! One of the great wizards who was presiding over the seminar slapped the table angrily, which caused the whole increasingly loud discussion to stop for a while.

Only then did Lynn speak. "I'll answer your questions one by one."

"First of all, the radius of the planet under our feet is about 6,875 kilometers, and the volume is 1,361.4 billion cubic kilometers......

Lynn patiently explained the radius, volume, and the corresponding Olympiad formulas and derivation processes, after all, these are all data that must be used in subsequent experiments.

Those wizards who accurately calculated the data were naturally satisfied, and those who miscalculated were embarrassed, and some wizards who were not convinced checked their calculations on the spot.

However, there are also many wizards like Rohr on the field who have an average level of calculation, and secretly keep these data in their hearts.

You must know that the orbit of planets and stars has been the hottest topic in Greenriel these days, and any gathering between wizards will inevitably have to say a few words, as if it has become a trend.

"As for the weight of the planet beneath our feet and what is the method of measuring it? I guess there's one more important issue that needs to be solved before it can be truly decrypted! Lynn's face straightened, and he looked at the wizards in the seminar hall, and suddenly asked.

"What do you think is the nature of gravity? Or what are the factors that determine the weight of an object when it is weighed? ”

Lynn's question instantly stumped the wizards on the field, it seemed simple but very tricky, even a little inexplicable, as if asking them to explain why water is called water and not earth!

Of course, the weight of an object is weighed with scales and weights, and the wizards of the Alchemy Society have even made magic scales that can weigh an object very accurately.

"What you're trying to say is that the gravity we feel is the gravitational pull of the planet itself, right? So, is it because of gravity that we can weigh an object? After a long silence, a great wizard in front of the high platform responded.

"Yes, but no!" Lynn nodded, then shook her head again. "Gravity is a component of gravitational force, it is not always a constant value, even if it is on the same planet, it will be felt differently in different places......"

"In general, the closer you get to the planet, the greater the effect of gravity, the farther away you are, the smaller the effect of gravity, and once you enter the infinite starry sky, the concept of weight no longer exists!" Lynn explained.

"That is, where there is no gravity, everything is weightless?" The witch sitting in the front row couldn't help but stand up. "This ...... It's incredible! ”

Although the concept of gravity has been proposed for a long time, and after the baptism of free fall experiments, the relationship between gravity and gravity is almost equal, but the weight of an object will change with the strength of gravity, or even disappear, which is far beyond everyone's imagination.

This is simply challenging their three views!

After a while, another wizard stood up and retorted. "Sir Lynn, please forgive me for not being able to agree with this idea, doesn't that mean that whether it is earth or gold, silver, copper, and iron, once they are separated from the influence of gravity, they will no longer be any different, and will become lighter than a feather?"

"Of course they are different because they are not of the same quality! And the weight we feel is actually the product of the mass of the object and the acceleration of gravity! Lynn said freely.

"Quality, what's that?" The witch who had just stood up had a puzzled look on her face.

"You can think of it as the total amount of elements contained inside an object!" Lynn said as succinctly as she could. "It is the most basic property inherent in matter itself, and it does not change with the temperature, pressure, and speed of the outside world...... It doesn't matter if you put it on a planet or in the universe, it's the same number! ”

The conversation in the hall became heated again, and it was Lynn's new concept of replacing weight with mass.

Everything in the world is made up of elements, which is common knowledge in wizarding lands, so Lynn's words are not too difficult to understand.

However, the other party's next words stunned everyone present.

"Also, gravity probably doesn't exist in my opinion!" Lynn doesn't care if these wizards can accept it or not, as soon as she opens her mouth, it will explode!

The scene of the seminar exploded, and thousands of wizards stood up in unison, looking at Lynn in disbelief - he was actually denying the existence of gravity!

How dare he?!