Although Glenn's light beam measurement experiment ultimately failed, it pushed the wizards' curiosity about the speed of light to another climax.

Because the results of the experiment were so shocking to them, the terrifying power of condensing strong light into a beam of light was also talked about by every wizard with relish.

It can be predicted that optics will become the research direction of many wizards in the future.

However, when it comes to measuring the speed of light, wizards are divided into two camps. Some insist that the speed of light is infinite. After all, they can see the sun and the moon, which are extremely far away from here, at a glance.

Measuring the speed of light is nonsense!

Another group of people believed that the speed of light was limited, because everything had that limit, and the "light element" was no exception, but they also couldn't think of continuing the experiment in this way.

For light, even a distance of one hundred kilometers can be reached in a flash. If this thing has speed, it must be at least more than ten thousand kilometers per second, so fast that no one can react. You have to know that the circumference of the eternal star under their feet is only more than 40,000 kilometers!

"Do we have to conduct experiments at both ends of the planet?" Sanchez thought. If so, the venue would be large enough, but how would they get there? "Stupid, this planet is round, and light travels in a straight line. It will either be blocked or fly into the universe, but it can't reach the other side." Raphael sneered.

"Then what else can we do?" Sanchez asked angrily.

Raphael opened his mouth, then shook his head helplessly. "How should I know?"

This magic star has so many ideas. Before last year's magic seminar, who would have thought that just by placing an icicle on the sea and measuring the length of its shadow, the circumference and volume of the entire planet could be calculated...

So Raphael couldn't guess what new ideas the other party would come up with this time...

Curiosity aside, this year's magic seminar still had to go on. Over the three days, three Morning Star Medal winners emerged.

They were Glenn who performed the magic of focusing light, Fulla who represented Anthony on stage to explain the theory of electromagnetism, and...

Yolande, who made a crude microscope... This wizard from the prophecy school was speechless after being refuted by Lynn at last year's seminar. He learned from his mistakes and devoted himself to research.

While using an astronomical telescope to observe distant stars, Yolande suddenly had an idea to make some improvements to this thing and successfully made a microscope.

Although the two had clashed at a seminar a year ago, Lin En did not take this small conflict to heart. It was nothing more than an academic dispute. It was normal to argue fiercely. The other party did not deliberately use some despicable means to disgust him, so Lin En was still very generous and gave Yolande the nomination for the Morning Star Medal.

This kind of magnanimity made Yolande feel ashamed.

He was prepared to be targeted this time and even wrote a speech of tens of thousands of words in advance to explain the importance of this research. However, he did not expect that it would never be used at all. Instead, Lin En was the first judge to suggest that he be awarded the Morning Star Medal.

During the past few days of working together, Rafael kept asking indirect questions, hoping that Lynn could reveal some details, but all of them were blocked by the latter with irrelevant answers... He could only mutter to himself, wondering if Sanchez's guess was right, and the magic star was not completely sure about the experiment, so he had been hiding it.

Lin En ignored the various rumors spreading in the wizarding land. After returning to the lounge of the Iyeta School, he called Alok and others over and asked about their preparations.

It took them three days to produce ten gears of the same size, ranging from 500 to 1,200 teeth. In addition, according to the dean's instructions, they had to ensure precision, with the distance between each tooth being exactly the same, with an accuracy of up to one thousandth of a centimeter.

Only official wizards can do such delicate work, which is why Lin En brought them here specially - after all, someone has to be responsible for the work!

Lydia and Johnny were responsible for the production of the semi-transparent mirror and the reflector, which have now been completed.

"Great, it looks like we can start the experiment tonight!" After checking the various experimental supplies, Lynn nodded with satisfaction.

Alok and the others were extremely puzzled as to why the dean asked them to make so many gears. "Are we going to rely on these things to measure the speed of light?" Lydia raised her hand and asked.

"Yes, the gears are enough!" Lin En nodded.

…

At night, in the city of Greenriel, wizards who had received the news and came to watch the experiment filled the entire square.

With the title of Magic Star and the experiment of measuring the speed of light, no one wanted to miss such a grand event.

"Master Lin En, we have been waiting for several days. You are not going to keep us in suspense now, are you?" Raphael said helplessly. He had been thinking about what other methods he could use to conduct the experiment these days, but he had racked his brains but came up with no ideas.

"My method is very simple, and everything you need is here!" Lynn said with a smile.

Raphael and others looked at the experimental device in front of Lin En with curiosity. The most eye-catching thing was naturally the strange-looking alchemical instrument. After Lin En's explanation, they realized that this thing was used to emit light beams, and the principle was similar to Glenn's focusing magic.

There is a reflector placed on the wall of the DC area, exactly four kilometers away from this square...

"Isn't this the reflector Glenn made a few days ago to measure the speed of light?"

Nancy muttered softly, and the wizards present nodded in unison. You know, Glenn used a hundred mirrors to create a range of one hundred kilometers, but still failed in the end. Although the mirror set up by Lynn crossed most of the city of Greenrill, even if the round-trip distance was taken into account, it was only eight kilometers, less than one-tenth.

It is simply impossible to measure the speed of light! "So we need to add this!" Lin En pointed to what Alok was holding. "This is the most critical part of this experiment!"

"Gear?" Raphael recognized it at the first sight. This thing was not unfamiliar to alchemists. It was present in the steam engine made by the Alchemy Society before.

What does this have to do with the measurement of the speed of light? (End of this chapter)