Double-slit interference.

This should be a widely known piece of physics knowledge.

A long time ago, the explanation of light's nature in the physics community was split into two camps:

One believed light was a particle, the other thought light was a wave.

As for the later emergence of the Ancient Wave School, that's not discussed here.

At that time, both camps had sufficient evidence, and neither could convince the other.

Later, physicists came up with a way:

To use the double-slit interference experiment to determine whether it's a particle or a wave.

The experiment is actually quite simple.

Double-slit, as the name implies.

It involves opening two slits in a barrier.

Then use a photon-emitting machine gun to fire at the double slits.

The photons that pass through the slits hit the screen behind, leaving a light spot.

Before the experiment, the experimenters had two hypotheses:

The first possibility.

If photons are pure particles, the screen must leave two bars.

Photons fired from a machine gun will pass straight through the slits like bullets, so the screen will definitely show two bars.

Because photons at other angles are blocked by the board.

The second possibility is that if photons are pure waves, the screen will show stripes like zebra lines.

Because when photons pass through the slits, they form two wave sources.

The two waves oscillate and interfere, with crest reinforcing crest and crest canceling trough.

Ultimately, complex and beautiful zebra lines will appear on the screen, which are interference patterns.

The final result of this experiment, everyone likely knows, confirmed the wave-particle duality of light.

This really is a very, very eerie experiment.

Because its ultimate conclusion is....

The result of the experiment depends on whether you observe the photons!

What does this mean?

Here's a very simple example that even a rare person can understand.

Your TV is broadcasting a live football match, and a player is about to shoot.

Pause here, predict whether this ball will score?

From the perspective of fans, scoring is related to whether the kicker is Ronaldo or Messi, the status of the opposing goalkeeper, and maybe even whether the referee was bribed.

From a scientist's perspective, there are more related factors.

For example, the force, speed, and direction of the ball, the distance to the goal...

Even the friction of the grass, the decibels of the fans' shouts, etc.

If all these factors are accurately considered in an equation, one could precisely predict the state of the ball three seconds later.

But regardless of being a fan or scientist, one thing should be universally acknowledged:

Whether the ball scores or not is absolutely unrelated to one thing:

Your TV.

No matter what brand your TV is, no matter the screen size, clarity, quality, whether you're watching on Migu or CCTV5...

The ball that's meant to score will score; if it's not meant to score, it won't.

Even if you angrily smash the TV, it won't help.

Do you think everything mentioned above is nonsense?

Then listen carefully:

The double-slit interference experiment proved that under identical conditions, whether the ball scores or not directly depends on whether you watch the TV at the moment of the shot!

Isn't it terrifying?

Photons firing from the emitter towards the double slits are like the football heading for the goal.

Using a camera to observe whether the photon enters the slit, and how it enters, is like watching the goal on your TV.

Whether you turn on the camera to observe the photons (watching TV), or don't place a camera (not watching TV) — the results of the two experiments are entirely different.

This is the curse of the observer.

Without observing the photon, it's a wave; take a look, and it instantly becomes a particle.

Frankly.

This thing currently cannot be delved into further; going deeper might even involve the difference between materialism and idealism.

There are less than twenty locals genuinely qualified to speak authoritatively in this field, if at all.

It's also because of the wave-particle duality of light that Wang Qiang suddenly had a new idea:

To transmit information through electromagnetic interference.

"Currently, although we don't yet fully understand the details of spiritual waves, Elder Liu's team confirmed it as a type of wave long ago."

At this moment, Wang Qiang is explaining his idea to everyone:

"Clan Leader Wei's spiritual wave cannot be transmitted because the other end of it is connected to his pineal gland, wherever the spiritual wave goes and what it does is controlled by his will.

Therefore, he is an observer.

Since he is an observer, interference phenomena will inevitably occur.

Under normal conditions, it's manageable.

Currently, Comrade Cao Yi is refining his life-bound Magical Artifact, so he is naturally unable to resist this kind of interference.

But it's different for us, we can completely emit an unattached, self-propagating microwave!"

Those who've studied physics surely remember one term:

Wavelength.

The meaning of wavelength isn't a wave with a sausage, but the distance between two adjacent crests or troughs in the direction of wave propagation.

Among the various wave types, the wavelength of microwaves is from 1 meter to 1 millimeter.

This means if conditions are suitable.

Emitting a detached microwave is as simple as using a remote control at home.

The rabbits don't even need to carry any information.

Just adjust the frequency of the wave source to match the spiritual wave, and they will inevitably produce crest interference.

And this interference is normal and harmless, distinctly different from the interference caused by spiritual waves.

It's almost like a stone dropping into water causing ripples.

Cao Yi is like a fish underwater, and would certainly react upon hearing the splash made by the stone.

After all, as a former frontline police officer, his reaction ability won't be flimsy.

As long as Cao Yi realizes that the control panel has detected his anomaly, he will undoubtedly direct the spiritual wave towards the entrance, thus refining his life-bound Magical Artifact.

Wang Qiang's proposal was quickly adopted and approved, with the relevant work being prepared by Liu Xiangqian's team.

Ten minutes later.

A frequency-modulated device was transported to the control panel, with Liu Xiangqian himself pressing the switch.

Then everyone's attention was focused on the screen.

They held their breath, eagerly awaiting good news.

After a few minutes.....

The line representing the spiritual wave on the screen suddenly started to change.

The scene previously displayed by the spiritual sensing apparatus was very clear:

All the spiritual waves, except the ones connected to the Soul-Severing Sword, were retracted back into Cao Yi's body.

And at this moment.

These spiritual waves suddenly began to scatter outwards.

One and a half meters around, three meters around, five meters around...

And then...

Outside the door!

At the same time.

Inside the cultivation room.

Cao Yi's emotions were also quite unsettled, with a sense of post-calamity joy amidst his confusion.

Before the microwave from the control panel appeared, he was already at a state near his body's limit.

The Soul-Severing Sword had been successfully refined long ago, but the spiritual waves in Cao Yi's mind kept surging and churning for some reason.

Cao Yi had tried to release the spiritual waves.

But at this moment, the spiritual waves were like springs. In the absence of extra imprints, they would automatically retract.

And however far they were stretched, there would be just as much feedback.

Under the impact of a large buildup of spiritual waves, his consciousness was even somewhat blurred at one point.

Luckily.

Just as Cao Yi was about to burn out his last energy.

A microwave appeared.

Just as Wang Qiang said, the microwaves didn't convey much information.

But its vibrating wave frequency fully matched the spiritual waves, and the crest produced by the interference clearly pointed towards the entrance.

Cao Yi quickly used the last bit of his strength to direct the spiritual waves outside.

The released spiritual waves, attracted by the many core imprints at the door, surged out like uncontrollable floodwaters.

By this time Cao Yi was nearly in a semi-conscious state, unable to control himself as the spiritual waves poured out.

In an invisible microscopic world.

A large number of spiritual waves rushed out of the cultivation room; with nearly twenty life-bound Magical Artifacts to choose from, the spiritual waves became less urgent.

In his daze.

Cao Yi suddenly sensed a larger entity further away.

Instinctively using the last bit of his strength, he directed the spiritual waves in that direction.

Then the entire person slumped somewhat weakly onto the meditation mat in the cultivation room.

At the same time.

Hua Jun suddenly blurted out a curse:

"Damn, how did this kid refine the Type 59-modified model I created?"

...

Note:

The chapter ends here for today; more to come tomorrow.

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