Chapter 552 255: At Kang Bridge, Waved the Sleeve, Summoned a Black Cloud (Part 2)_3

The generator also unexpectedly produced a spark!

As top physicists of the time, how could Faraday and others not realize what this represented?!

However, this wasn't the end.

Xu Yun beckoned again, and Wheat quickly brought up several polarizing lenses, handing them to Xu Yun.

With a slight flick of the polarizing lenses in his palm, Xu Yun's expression was somewhat nuanced.

Speaking of the use of polarizing lenses, surely many students are familiar with them.

They allow light vibrating in a specific electric vector direction to pass through while absorbing the light vibrating perpendicular to it, exhibiting dichroism.

That is, dλ/λ=cosθdn/n.

Where n is the refractive index with gradient changes, resulting from the gradient changes in flow field speed between different media, n=1/√(1-u²/c²).

In layman's terms, after natural light passes through the polarizing lens, the transmitted light essentially becomes plane-polarized light, its intensity reduced by half.

According to historical trajectories.

Polarizing lenses commonly used in later laboratories weren't manufactured by Rand across the sea until 1908.

But in this dungeon, due to the wave theory not being suppressed for a long time as in the original timeline, even surpassing particle theory.

Thus, many small devices related to wave theory emerged much earlier.

According to the information Xu Yun learned in "1650-1830: Two Hundred Years of Scientific Leap in History."

42 years ago, that is, in 1808.

Soon after Marius verified the phenomenon of light polarization, polarizing lenses were first born.

Although the polarizing lenses at this time were far from as sophisticated as those in later generations, they still met most experimental requirements in the early 19th century when the micro world wasn't yet involved.

It was always used to support the wave theory of light—because only transverse waves undergo polarization.

But today.

This little thing is now in my hands and will become one of the tools to prove particle theory....

All Things in the world can be so miraculous at times.

This time, Xu Yun prepared a mixed system composed of three polarizing lenses, with the polarization directions of the first and third lenses perpendicular to each other, and those of the first and second lenses parallel.

Meanwhile, the second polarizing lens rotates around the direction of light propagation at a constant angular velocity w.

After natural light passes through polarizer P1, polarized light is formed with intensity I1=I/2.

Simultaneously, according to Malus's law, the light intensity through P3 is I3=Icos²Θ.

Due to the polarization directions of P and P3 being perpendicular.

So the angle between the polarization directions of P and P2 is Φ=π/2-Θ, I=I(1-cos4wt)/16.

Again, according to Malus's law.

I=Icos²Φ=I3sin²Θ=I(cos²Θsin²Θ)²

Thus, the light intensity through P3 is= I(sin²2Θ)/8 =I(1–cos4Θ)/16.

When cos4Θ=-1, the light intensity through the system is maximized.

This system spares Xu Yun the trouble of manually dimming the light intensity, making the calculation process simple and easy to understand.

Then Xu Yun placed the polarizing system in front of the zinc plate, took a deep breath, and retreated to his original position.

Soon.

Under the effect of the polarizing combination.

The intensity of the light emitted from the generator was reduced, with the lowest period even reaching 1/16.

But what left Farah and others speechless was...

No matter how the polarizing combination rotates, even if the light intensity is reduced by more than ten times, the receiver still shows electric sparks!

Pa! Pa! Pa!

Watching the dancing electric lights in front of him, Faraday suddenly turned pale, gasping with difficulty and clutching his chest in large breaths.

Professor Stokes was the first to notice his abnormality, quickly supporting his shoulder, his forehead instantly covered in fine sweat, and shouted:

"Mr. Faraday, are you okay? Where's the school doctor? Where is the school doctor?"

Seeing this situation.

Beside the generator, Xu Yun's heart also skipped a beat, quickly moving in front of Faraday:

"Mr. Faraday! Mr. Faraday!"

At this moment, Xu Yun finally recalled something he had overlooked:

Faraday had a severe coronary heart condition.

He passed away while reading in his study on August 25, 1867. In later years, a very mainstream view was that he had a sudden heart attack.

What's more crucial is.....

Considering the crowded and prying eyes at the opening ceremony today, and the indoor temperature being unfavorable for nitroglycerin preservation, Xu Yun left the nitroglycerin in his dorm and didn't bring it with him.

If such a scientific giant were to suffer an accident because of his fault, he could really say his sin surpassed that of Sun Xiaochuan.

But what slightly eased the tension on Xu Yun's heartstring was.

Farah first twisted his face and waved his hand at him, swiftly taking out a small bottle from his chest.

Tremblingly, he poured out a tablet, placed it under his tongue, and closed his eyes to dissolve it.

About a minute later.

Faraday's complexion gradually reddened, and his breathing returned to normal.

He first glanced at Professor Stokes:

"Thank you, Professor Stokes, I'm fine."

Then, without waiting for Professor Stokes to respond, he gently pushed away his support and quietly walked to the receiver, staring at the clusters of brief and dazzling sparks.

This currently strongest boss in the physics world now had an unprecedentedly solemn look in his eyes.

The current situation clearly indicated one thing:

Within a certain frequency, the photoelectric effect is unrelated to light intensity.

No matter how high the light intensity is raised, it won't help unless the light frequency is insufficient.

And as long as a certain frequency is reached, the phenomenon will occur normally even if the light intensity is minimal.

This undoubtedly contradicts the existing scientific system, as the wave theory of light cannot fully explain it.

Because the wave theory describes the energy of light as continuous, and light intensity—i.e., amplitude—suggests the greater the intensity, the greater the energy, independent of frequency.

Additionally, when using weak light to illuminate the receiver, an energy accumulation process should occur on the generator, rather than immediately generating electric sparks.

This is akin to a train where the entrance flow is not large, representing the passenger not yet fully arrived.

According to the rules, the train must be fully occupied to start, so what can be done?

Naturally, one can only wait until all have arrived to depart.

But the photoelectric effect phenomenon now is akin to the train leaving with only one or two passengers present....

As for the particle theory...

Farah pondered for a moment, quickly coming up with some explanatory ideas:

When light particles strike a metal, their energy can be entirely absorbed by a certain charge within the metal, immediately increasing the charge's kinetic energy without needing to accumulate energy.

If the charge's kinetic energy is large enough to overcome the attractive force within the metal.

Then it can leave the surface of the metal to form an electric spark...

But this way.

Many theories based on the wave theory are called into question for their correctness.

Even if we delve deeper, even the existing particle theory can hardly fully support the explanation of the photoelectric phenomenon.

This is equivalent to the foot of the current physics edifice being dug away, without complete collapse but showing signs of tilting.

Thinking of this.

Faraday looked up at the night sky.

The night sky now resembled a black curtain adorned only with scattered stars.

On November 7, 1850.

A Huaxia person quietly appeared at the University of Cambridge.

He waved his sleeve, not bringing a ship of starlight, but calling forth a dark cloud.

The electrical sparks amid the undulating lights rippled in everyone's hearts.

The pool under the elm shade was not a clear spring but a mixed solution of silver chloride and fluorosilicic acid.

Even summer insects fell silent because it was winter.

Silence settled over Kang Bridge tonight.

In reality.

The shock brought by Xu Yun was far more than just this...

After all, as compensation for scaring Faraday into angina, fulfilling a personal life regret for him is not excessive, right?

As for Wheat.

Sorry, I'm a Transmigrator....

.....

Note:

Some students pointed out that Old Fa is easily mistaken for Pharaoh, I got led into it too... so let's stick to calling him Faraday.