I made science magic

Chapter 324 My method is to use gears and light to compare speed!

Under everyone's puzzled gaze, Airok installed the gear in front of the alchemy instrument that emitted the beam, and placed a very strange-looking piece of glass between them.

Lin En finally explained. "This is a semi-transparent mirror! It is different from ordinary glass. As the name suggests, only one side can let the light beam penetrate!"

Glenn looked back and forth in surprise. On one side, he could clearly see the scene behind him, while on the other side, it was blurry.

"This experiment is also very simple. This alchemy instrument emits a light beam. When the gear is in a stationary state, the light will shine through the tooth gap and hit the opposite reflector.

That side forms a larger light spot, allowing us to see it intuitively!"

As he spoke, Linn opened the alchemy instrument, and two beams of light immediately appeared in the air.

Just as he said, the light passed through the semi-lens, crossed the gap between the two gears, accurately hit the distant reflector, then turned back, passed through the tooth gap again and hit the semi-lens.

"But if this gear starts to rotate... then the light that passes through the teeth may be blocked when it returns." Linn paused, with a thought in his mind, driven by the [Mage's Hand],

The gears slowly started turning.

Linn didn't need to explain too much. Everyone could see that the light beam behind the huge gear began to fade in and out, and the light spots hitting the semi-lens also became flickering. That's because

When the light returns, it may happen to pass through the gap between the teeth, or it may be blocked by the gear...

Just when the wizards were frowning and thinking about this phenomenon, Linn's words came over again.

"Theoretically, if the gear speed is fast enough, after the light passes through the first tooth gap and returns over a distance of eight kilometers, it will pass through the second gear gap exactly. Then..."

Before Linn could finish speaking, Glenn seemed to have thought of something and said in horror. "In this way, every light element that can pass through the tooth gap will definitely return from the second tooth gap.

There is no possibility of being blocked, and the beams and spots will become extremely obvious!"

Glenn's words were like dropping a boulder into a calm lake, and the wizards present immediately exploded.

"This is really...a genius idea!" Raphael said with a trembling tone.

He had been thinking about what method the magic star would use to measure the speed of light, but he didn't expect that the other party could do it with only a small gear!

The characteristic of the method is two words: cleverness!

The most critical aspect of this experiment is to synchronize the time it takes for the gear to rotate one section and the time it takes for the light to be emitted and returned.

The subtlety is that light needs to travel a full distance of eight kilometers, and the opposite gear only needs to rotate slightly by a small amount to reach the second tooth gap!

In other words, each tooth pitch on the gear represents the distance traveled by light. If there are a thousand tooth pitches in total, and they rotate once, the light must travel 8,000 kilometers. Ten revolutions is

Eighty thousand miles!

The wizards who also understood this couldn't help but take a breath of cold air. This little gear is like a super amplifier!

The speed of light may be incredibly fast, but the speed of gears can also be increased extremely fast...

"This is to compare the speed of gears and light!" Harrov also sighed.

It's just that Lin En is very ungrateful. The gear travels five millimeters (the distance of one tooth), and the light has to run eight kilometers...a gap of hundreds of thousands of times!

In the end, you only need to know the distance traveled by the gear multiplied by this multiple difference - that is, looking at the number of teeth separated by the gear and the number of revolutions of the wheel in one second, you can in turn calculate the speed of light!

No wonder Linn is so confident that he can measure the speed of light...

"Amazing, worthy of being a magic star!" Sanchez sighed.

He was convinced. What kind of brain could come up with such an idea?

However, there were also many wizards who were watching with blank expressions on their faces.

What are you talking about? Why can’t I understand...

But in order to maintain his dignity as a wizard, he still nodded pretendingly and said a few words of praise.

"As expected of the Magic Star..." "This is a good idea! I knew he would definitely have a way!"

Amidst the sound of appreciation, there are also many voices of opposition. Yasos and others insist that the speed of light is infinite, and no matter how fast Linn can accelerate the gear, it will be in vain!

"Dean, can we start?" Lydia shouted loudly.

Linn nodded and asked the halfling girl to start the internal combustion engine and increase the speed of the gear.

Under the gaze of everyone, the 720-tooth gear in front of them slowly began to rotate, and then the speed became faster and faster, five, ten, fifteen revolutions per second... and soon turned into an afterimage.

.

The light spots on the light beam and the semi-lens are also flickering, and the frequency is getting faster and faster, because the light is always changing back and forth between passing and not passing...

"So fast..." Witch Nancy murmured to herself. She could no longer see the speed of the gear rotation. "At such a speed, can light really distinguish the small tooth gaps?"

You must know that the distance between each tooth gap is only 0.5 centimeters. At high speed, it will become a sharp cutting instrument. What if the light element cannot find the tooth gap when passing through it? Then they will not be able to see it?

"We may not be able to tell, but light can!" Linn said confidently.

"Look, the frequency of the light beam and light spot flashing seems to be... starting to slow down!" Raphael quickly reminded him.

He was not the only one who noticed this, because this change was very obvious and could not be an illusion. After the rotation speed of the gear increased again, the faces of the wizards present suddenly showed a look of fear...

"The light spot...disappeared!"

Sanchez's eyes widened, and he saw an extremely strange sight in front of him. The tiny beam of light emitted from the alchemy instrument stopped at the gear when it returned, but the distance between the gear and the semi-lens was sudden.

It disappeared, no longer appearing and disappearing as before, and there was no light spot hitting the semi-lens.

This is the exact opposite of what Lynn said…

"What on earth is going on?" Raphael almost pulled off his beard, his mind filled with doubts.

"That's because the light that passed through the tooth gap just hit the tooth joint when it returned. This shows that the speed of light is limited. We are already halfway successful!" Lin En's words rang in everyone's ears.

(End of chapter)