While the wizards of Greenriel City were studying the method of measuring the speed of light, a conversation was also going on in the manor of the legendary Speaker Haroff.

"The existing theories of magic in the Wizarding Lands are rudimentary...... Did he really say that? ”

Haroff frowned after listening to Aurora's story, Lynn's words were undoubtedly a provocation to the entire wizarding land.

It is also a great disrespect to those pioneers who have worked hard to develop and study demonism, even if they have extraordinary knowledge, they should not be so arrogant.

"No, I don't think he meant just the land of wizards, and the magical theories that the [Arcane Society] has researched are no exception, and they all seem extremely rudi......mentary in front of optics," Aurora explained, recalling what Lynn had said in the room.

Optics is the most important key to revealing the microscopic real world......

What exactly does this real world refer to?

Could it be that the world they see now is false?

Aurora thought to herself, confused, and still understood the meaning of her words.

Harrov was also deep in thought, and from his previous contact and the various novel theories put forward by Lynn, it could be seen that the [Arcane Society] had a much deeper understanding of magic and the world than they did.

If these words are not deliberately mocking and arrogant, then it is worth exploring what kind of secrets are contained in the ubiquitous light, and can actually be worthy of such an evaluation......

Harrov would love to attend another gathering of legendary wizards and ask them in person, but until now he has not received any more invitations.

Although Harrov, who owns the [Arcane Ring], also has the right to organize other people to meet, this seems that he is too eager, and the most important thing is that he has not yet figured out the Big Bang theory, and has not been able to research a novel theory that can be brought up for the legends to discuss.

Thinking of this, Harrov vaguely understood why the gathering of legendary wizards had not been held until now, it was normal for a magic research to be pondered for seven or eight years, or even ten years before a little result was produced, and the annual academic seminars in the land of wizards were already frequent.

"It seems that we must pay more attention to the study of optics." Harrov's expression became extremely solemn, and then he looked at Aurora and asked curiously. "Do you have a way to measure the speed of light?"

Aurora is the one with the deepest understanding of optics among them, and if she can't do it, then I'm afraid the entire wizarding land won't be able to measure the speed of light.

"I think we can start with astronomy!" Aurora said with a deep groan.

What's the hardest thing about measuring the speed of light? Of course, the speed of light is unbelievably fast, and they can't find a large enough site to conduct experiments, and it is difficult to create a strong light that can span thousands of kilometers.

And if you want to talk about the vastness of distance, of course, it must belong to the cosmic starry sky!

According to the data they calculated last year, the diameter of the entire planet is tens of thousands of kilometers, and the distance between the planets is even farther away.

"That's a good idea!" Harrov said in admiration, but soon as if he had thought of something, he quickly interrupted. "No, no, the moment we see the sun, the light has already arrived, and there is no way to measure the speed of light from this."

According to Lynn, everything they see is a reflection of light, and how can they use it as a reference if they can't see the sun at all until the light arrives?

Aurora also frowned, something she hadn't thought about before, but just a few seconds later, she smiled again. "Then try other stars in the distance!"

"For example, the companion star of Tyre disappears from time to time, presumably because it rotates to the far side of Tyre, which obscures the sun's rays, so we can't see it......

The cycle of the planet should be extremely stable and regular, but this is not the case, according to my observation, the time of disappearance of the companion star is not uniform throughout the year, sometimes fast and sometimes slow, and it is constantly changing every month......"

This strange astronomical phenomenon once puzzled her, but now she has the answer!

Because of the distance between the two stars and the Eternal Star during the course of the year, it takes time for the sunlight to travel to the companion star and then reflect back to be seen by them, and it will not arrive immediately, if you know the distance between the two stars and the Eternal Star, you may be able to reflect the speed of the light!

After listening to Aurora's story, Harrov was amazed. "You still have a way, it seems that you have won this Silver Moon Medal this year!"

As he spoke, Harrov couldn't help but laugh, this time Lynn was afraid that he was about to miscalculate.

Lynn dared to publicly promise to nominate the Silver Moon Medal for the person who measured the speed of light, apparently confident that they would not be able to find a way to measure the speed of light in just a few days, but the other party clearly underestimated their ability!

"There's just one more problem...... Aurora said hesitantly.

"What's the problem?" Harrov asked with a smile.

"The diameters and distances of the planets are still being calculated, and at the moment we have only calculated how far the Sun and Moon are from the Eternal Star at our feet, and it is not yet the turn of Tyre...... Aurora said helplessly.

Their method of measuring the diameter and distance of the planet is the three laws of the stars and the trigonometric parallax method given by Lynn, because the planets are very large, the calculated data is incredible, and it often has to be calculated repeatedly to confirm, so the progress is very slow.

"It's been almost a year, and you haven't finished it yet?" Harrov's expression was very speechless, isn't that the same as not saying it, Lynn is going to verify it after this seminar, how can they have time to wait for it to be calculated slowly.

Aurora gave Harrov a blank look, they still have to test the theories put forward by Lynn this year, and redraw a detailed star map, Tyr is not very critical, so it is naturally relatively low on the list.

In addition, although it is possible to measure the speed of light using this method, considering the rotation of the planet itself, there may be some errors, and only an approximate value can be estimated.

"In this way, you can only use stupid methods, such as re-replicating your original experiment, one kilometer is not enough, then ten kilometers, or even a hundred kilometers!" Harrov said categorically.

"In fact, there are quite a few people who are already preparing to do similar experiments, and their ideas are very interesting, so let's let these people toss around." Aurora shook her head, since someone was helping her verify it, it wouldn't be bad to save some effort.

(End of chapter)