Chapter 293

There is still a week to go before the departure. Naturally, Lena is not idle.

He came to the lab the day after he invited Claire to travel with him.

Lena quickly arranged the array which was converted from the magic association with academic points.

Each of the three kinds of particle generating arrays requires 30 academic points, which is different from the original array of fina's father. It is an improved array optimized by several mages. It can generate pure particle flow without impurities, and it is safe and reliable. It will not affect the user. Due to the use of the standard magic stone function, usually a three ring mage can control it independently Naturally, Lena can also use it.

Next to him floated a piece of paper with a sketch of the experiment he had designed last night.

He first arranged a disk, put a thin gold foil in the middle of the disk, and then arranged a normal array on one side of the disk, which can produce a particle flow composed of elemental Sirius particles with a relative element mass of about 4. At the periphery of the disk, he arranged a microscope. There is a circle of receiving screen around the disk. If the Sirius particles hit the receiving screen, they will be left behind A spot of light, this microscope can rotate around the disk, enough to see the Sirius particles from all directions.

In order to prevent interference, the whole experimental device is covered with vacuum glass, and Lena can control the rotation of the microscope through the mechanism.

After assembling the experimental device and debugging, Lena officially started the experiment.

He started the particle generation array, a flash of fluorescence, invisible flow of particles began to gradually surge, hit the gold foil.

After about ten minutes, he stopped the operation of the particle generation array, and then turned the microscope to count the falling points of the Sirius particles on the receiving screen.

In the opinion of Mr. oltanke, the deflection angle of the Sirius particle in this experiment should be very small.

If the electron is hit, according to the mass ratio of the two, the effect of the electron on the Sirius particle is negligible and can be ignored.

If it hits the atom, the positive charges on both sides of the atom will cancel each other, and it will not affect the particle.

So, according to the cake and raisin model, the Sirius particles should have almost no deflection in this experiment, concentrating on the other side of the gold foil.

However, when Lennar finished the statistics, he found that although most of the Sirius particles are concentrated on the opposite side of the particle generation array to receive the screen, there are still a small number of Sirius particles with large angle deflection, some of which have a deflection angle of more than 90 degrees, and some even have a reflection of 180 degrees!

This goes against the atomic model proposed by Mr. Alterac.

Lena repeated the experiment twice and got similar results. Then he came to the other side of the table and began to write.

"... according to the experimental phenomenon, most of the mass and charge of an atom should be concentrated in a very small space. The atom is not like a cake inlaid with raisins, but is composed of a very small nucleus and the electrons surrounding it."

Only when the mass of the whole atom is concentrated in a small part of the region, can the experimental phenomenon be explained:

most of the Sirius particles pass through the gap between the nuclei, even if they hit the electrons.

A few of the particles pass through the region close to the nucleus and are repelled by the positive charge, which affects the trajectory of the motion and causes deflection. The deflection angle increases as the particles get closer to the nucleus.

Some of the particles hit the nucleus and deflected nearly 180 degrees.

Lena called this atomic model nuclear model, and then he began to calculate. He estimated according to the proportion of the Sirius particles at various angles on the receiving screen, and finally found that compared with the whole atom, the volume of the atomic nucleus is less than one ten thousandth of its volume. If the atom is compared to a huge square, then the atomic nucleus is an egg in the middle of the square.

He stopped writing and took a long breath.

The first conjecture is that according to the periodic law of elements, although the number of nuclear charges of elements with similar properties is different, there must be some characteristics that are similar. The conjecture is the distribution of electrons in the outer layer, because according to the alchemy reaction, some elements are always fixed in the reaction The loss of the same number of electrons shows that the electrons outside the nucleus are not completely equivalent, and they are different.

The second conjecture is that the nucleus may not be the smallest particle, because the nuclear charge number and relative element mass of different element nuclei are different, as well as the existence of isotopes and the phenomenon observed by mages that radioactive material changes into another element after releasing the Helios particle stream.

Lerner conjectured that there may be a positively charged particle and a non charged particle, which together constitute the nucleus. In this way, the theory that every element or even every isotope occupies one particle can be simplified to various nuclei composed of two different kinds of particles.He called charged particles protons and uncharged particles neutrons.

Write down these two conjectures, Lena sighs.

At present, with his strength and magic level, he has not been able to verify these two conjectures. Therefore, he does not intend to write these two conjectures into the paper, but keeps a trace of selfishness.

Looking up, it was afternoon. Then Lena realized that he hadn't had lunch, and his stomach seemed to have forgotten his hunger. He didn't protest until now.

Lena quickly packed up the experimental device, put away his notes, rushed to the canteen, took a simple food and ate it.

After a big meal, he went back to his office and was ready to continue reading alchemy, which he had only read once yesterday.

But when he opened the door, he found that the tiger cat had already squatted on Lena's desk, licking his paws, quite comfortable.

"I don't have anything to eat."

Lena shrugged, put his notes in his arms in the corner of his desk and scratched the cat's head.

"I'm not looking for food today."

"What are you here for?"

Then, after about ten seconds, he suddenly regained his mind and looked at the tiger cat rubbing his palm with surprise.

"You... You talked?"

He looked around to make sure that he was not affected by any magic. He subconsciously stepped back and stared at the kitten.

"Introduce yourself to meow again."

The kitten stopped and looked at Lena with amber eyes.

"You can call me Mrs. Freya."

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