After Lin En's explanation, the wizards present finally reacted and looked at the gears that kept turning in front of them, their faces full of horror.

This gear actually blocked all the light elements that tried to pass through the teeth, without exception!

"This is not magic!" Athos and others shouted in disbelief.

This strange situation directly proves that the speed of light is not infinite! Otherwise, every light that passes through the tooth gap will return instantly, and there is no possibility of being blocked...

"It works, this method really works!" Glenn murmured to himself.

Just as Lin En said, they were already halfway there. All they had to do next was to continue speeding up, and the returning light would gradually move backwards, passing the blocking tooth segment and reaching the next tooth gap! "How fast is the speed now?" Raphael asked anxiously.

"It's twenty-five circles per second!" Lydia reported loudly.

"Keep speeding it up, faster!" Raphael shouted loudly.

Lydia glanced at Lynn, then increased the power of the internal combustion engine again as instructed. The speed of the gears immediately increased to several levels, which could only be described as exaggerated. A violent noise rang in everyone's ears.

So much so that people like Alok who were watching were a little worried that this thing might suddenly break.

After accelerating to 35 revolutions per second, the light spot still did not appear, but the speed of the gear was close to the limit!

Although Lin En asked them to reduce the pitch between the gears to 0.5 centimeters, the circumference of the gears reached an astonishing seven meters. Under the condition of maintaining an ultra-high speed, it could collapse at any time! "Get out of the way, I'll do it!" Harov strode forward and directly interrupted the power provided by the internal combustion engine, and then used magic to instantly accelerate the gears to more than 40 revolutions!

In order to ensure accuracy, Harov did not increase the speed too quickly, but increased it at a balanced rate...

When the roulette wheel's speed exceeded 52 revolutions per second, every wizard present could clearly see that a conspicuous spot of light appeared on the half-mirror lens again!

This means that the light that passed through the first tooth gap has returned from the second tooth gap! Just as everyone was cheering, the entire roulette wheel exploded directly, and the flying fragments were like the sharpest knives, shooting in all directions!

There were bursts of screams from the crowd. Fortunately, Harov did not let the experimental accident happen again. The flying roulette fragments were like sinking into a quagmire. Under the effect of the slow barrier, their speed became slower and slower, and finally they hovered in the air.

"What was the speed just now, Mr. Speaker?" Raphael asked excitedly.

"It's fifty-two revolutions per second!" Harov said confidently.

You can never go wrong with this value!

Raphael immediately did the math in his mind.

Seven hundred and twenty teeth times eight kilometers times fifty-two revolutions, that is...

Twenty-nine thousand five hundred kilometers per second!

When they calculated this number, the wizards showed disbelief on their faces, and they even started to wonder if they had made a mistake.

This is too fast...

"Doesn't this mean that light can circle the entire Eternal Star seven and a half times in one second?" Witch Nancy suddenly realized this.

The circumference of the continent beneath their feet is only 40,000 kilometers.

"Isn't this a bit too exaggerated?" Sanchez frowned. Nearly 300,000 kilometers per second is no different from arriving in an instant within their cognitive range.

"Only such a fast speed is enough to travel through the vast universe..." Aurora reminded.

For example, from the sun to this eternal star, the closest point is about 140 million kilometers, which takes more than eight minutes even at the speed of light!

However, in the face of such a distance and speed, even these legendary wizards are as small as dust...

"So what we see every day is the sun from several minutes ago!" Lydia counted on her fingers and suddenly came to a surprising conclusion.

Yolande and other wizards of the prophecy school suddenly thought that they might be able to measure the distances between the planets and them through the speed of light. The speed of light is a cosmic ruler and an excellent reference that allows them to easily calculate various data that were difficult to evaluate in the past.

Of course, this premise is that they need to measure the speed of light in the vacuum of the universe...

Just as the wizards were shocked by the terrifying speed of light, Lin En was thinking about another thing in his mind.

The speed of light in the two worlds is so close...

Lin En thought silently in his mind. If the data in the intelligent brain was correct, the speed of light measured in the previous life was 299,792 kilometers per second. The difference between the two was very small. It was probably just due to the problem of measurement accuracy...

Does this prove that the two worlds exist in the same universe? This is not impossible. Although the Federation had never discovered magic in the past, humans could not even fully control the small solar system. It was like a savage living in the desert who thought that the yellow sand on the ground was the whole world.

However, the vastness of the universe is far beyond everyone's imagination. Perhaps in some galaxy in the universe, there exists a magical substance called magic, or energy?

Of course, the similarities between the two worlds are so great that it is possible that this is the Earth in another parallel universe...

However, these conjectures are obviously not verifiable now, and Lin En did not spend too much effort on it. Instead, he used the gears with different numbers of teeth that he had prepared long ago to try it again several times to verify the accuracy of the experiment.

There was some fluctuation in the final data, with a difference of about several hundred meters.

The wizards present were extremely satisfied with the result. After all, compared with the huge size of the speed of light, it is not worth mentioning at all.

Some people even speculate that the speed of light may be different in different areas, just like the speed of sound, so the data measured several times may vary.

Only Lin En himself was a little dissatisfied. Of course, the more accurate the measurement of the speed of light, the better. However, with the current simple conditions, it is impossible to make a more accurate instrument in a short time. The only thing that can be done is the gear and octahedron experiment. These two methods are convenient and easy to use, but slight errors are always inevitable.

(End of this chapter)