After dinner, Reiner returned to his room, sat down at his desk, and finished reading the periodicals he hadn't finished reading during the day.

He saw a silent polemic quietly arise after Lord Alberton's paper on the principle of the relativity of laws.

In this issue of Truth, Newington and Holland jointly published a revision of the Newington-Holland equation in a non-ether-based environment, which is another modification of the Newington-Holland equation that was previously questioned due to the aether drifting experiment.

In the paper, Newington mentioned a key problem, that is, according to the description of the system of equations, they obtained a value of nearly 300,000 kilometers per second of the speed of light, and this value does not change depending on the means of observation or the frame of reference.

When he saw this, there was a sound of footsteps behind Reiner, causing him to turn around.

Claire's hair was still a little wet, she was wearing a blue, bear-patterned pajamas, flannel slippers, and a book in her hand, even in loose pajamas, Claire's figure was still faintly visible, making people unable to take their eyes off it.

"Why didn't your hair dry out, it's so easy to catch a cold."

When Reiner saw Claire with her hair scattered, she put down the journal in her hand and stood up.

He sat Claire on the bed, raised his hand, and a warm, strong wind burst from his fingers and blew into Claire's long hair.

The long blonde hair was slightly curly, blown by the hot wind, slightly raised, and the fingers of Reiner's other hand were spread out, gently scattered and shaken, so that each end of the hair could be quickly blown dry.

Claire sat down on the bed with her hands on her knees, at Reiner's mercy.

You can smell a faint fragrance in the air, which is the scent of shampoo, and through the blonde hair, Reiner can see the back of Claire's fair neck, and beyond the neck, from Reiner's angle, you can get a glimpse of the snow white on her chest.

"It's too much trouble to blow your hair."

Claire said, feeling Reiner's palm fiddling with her hair, but feeling relieved that she wanted it to last longer.

"After that, it shouldn't be difficult to develop a magic prop that can be automatically air-dried."

Reiner said, his fingers running lightly over the ends of Claire's hair, occasionally touching her back.

"By the way, Reiner, I heard Fina say today, it seems like you're having a problem with the magic computer?"

Claire asked, turning her head slightly and looking sideways at Reiner.

"Well, there are indeed some problems, to put it simply, the past perception was that the propagation of light was instantaneous, but now according to calculations, there is a limit speed for the propagation of light, and the signal transmission of the magic computer is essentially the transmission of electromagnetic signals like light, which leads to the problem of time calibration, as well as signal accuracy."

Reiner explained in a way that was as understandable as possible to Claire, but Claire, despite her low level of magic, would patiently listen to Reiner's explanations and try her best to understand.

So, why is the speed of light finite? If you give it energy, won't you be able to increase your speed all the time? ”

Claire thought for a moment and asked rhetorically.

Her question made Reiner stunned, she didn't expect Claire to find the essence of the problem in such a short time, his silence made Claire curious, and the whole person turned to face Reiner.

"What's wrong, Reiner?"

Claire tilted her head and looked at Reiner with wide violet eyes.

"No, your question is good."

Reiner smiled and gently touched Claire's head.

"The problem now is that the Newington-Holland equations, which describe the mutual conversion of electric and magnetic fields, show that the speed of light has a limit value, and that it is this fixed value in a vacuum, and this value is fixed and cannot be surpassed no matter what reference frame is used, that is, no matter what angle is used."

Reiner waved his hand, and in mid-air, he projected two roughly constructed carriages with light.

"I'll give you an example, just like these two carriages, if they are traveling in the same direction at one speed, although from the ground, the speed of the two carriages is still their own speed, but from one carriage to the speed of the other carriage, it should be the sum of the two, this is the difference between the frame of reference, and it is also the basis of our current sports system."

Claire nodded as she watched the two carriages draw closer.

"The reason for this phenomenon is that we believe that time exists independently of space, is a constant thing, the definition of velocity is the distance that an object moves per unit of time, and the relative velocity is the distance it moves relative to the frame of reference, and at the same time, all the laws of motion are the same for objects in motion or at rest, and in the case of constant time, the relative velocity is naturally the sum of the velocity of the object itself and the velocity of the frame of reference itself."

Reiner saw Claire listening with relish, and continued.

"But light is different, according to the description of the Newington-Holland equations, if two beams of light are emitted relative to each other, then the speed of the other beam of light from one beam of light is not the sum of the velocities of the two beams of light, but the limit value, to be precise, close to 300,000 kilometers per second, and our past laws of motion are invalid in the speed of light."

"How is this possible?"

Claire was a little surprised, this completely subverted her common sense, if it weren't for the fact that she had been exposed to many things beyond common sense with Reiner, Claire might have been shaken by her cognition.

"That's the contradiction, and the Newington-Holland equations mathematically verify this, but it goes against what we know in real life and the laws of motion that have been true for so many years."

Reiner spread his hand, and the two wagons vanished into particles.

"The solution to this problem is nothing more than two choices, either to prove the Newington-Holland equations wrong, or to prove the laws of relative motion wrong, both of which are undoubtedly extremely difficult and painful for the mage."

"And what does Reiner think?"

Claire lifted her hand and gently touched Reiner's cheek.

"I am more supportive of His Excellency Newington's view."

Reiner grabbed the hand and held it in the palm of her hand, Claire's tiny palm soft and warm.

"After all, it's an answer with a mathematical foundation, and a lot of times, what we see tends to deceive our eyes, but math doesn't."

"Then you're going to have to work hard."

Claire said, as if she was tired of Reiner.

"It's okay, as long as you're here, it's not hard."

Reiner's words made Claire blush, and she couldn't help but lower her head, but Reiner had already leaned in.