Magus Tech Chapter 246: Experimental research and microscope resolution

A moment later.

Li Cha stood on the street, surrounded by a large group of members of the Redsk Gang lying on the ground screaming and screaming, either with broken legs or hands, in short, they all lost the ability to fight.

The remaining members of the Redsk gang looked at Li Cha in horror, thinking that he was a monster. And the muscular men who escaped from the siege in the distance looked at Li Cha with shock, thinking that Li Cha was also a monster, but a monster helping them.

At this moment, footsteps sounded from the street and the end of the street at the same time, and many muscular men rushed out, all holding heavy weapons. After rushing out, the new muscular man first looked at his bleeding companion and shouted: "Brothers, we are late, hold on!"

Then he looked at the weapon-wielding man who had been reduced by half, and roared with red eyes: "The **** of the Redsk Gang, how dare you sneak attack us, take your life!"

After the words fell, the newly appeared muscular man launched an attack mercilessly. Li Cha saw the person rushing forward. He was two meters tall and weighed more than two hundred and fifty catties. He was the muscular man among the muscular men— — Not Bucky, who else.

Li Cha suddenly remembered that Bucky had indeed said before that he had a large number of brothers...

The people of the Hongsk gang panicked, feeling that this battle was impossible to fight, and shouted: "We vote..."

"Don't surrender!" Bucky shouted, his voice completely overwhelmed the members of the Redsk Gang, and then slammed into the remaining crowd of the Redsk Gang.

People from the Redsk Gang: "Nimma...ah!"

…

"Bang bang bang!"

"Ahhh!"

The sound of fighting and screams subsided quickly. Thanks to Li Cha's participation, the muscular man's side had already caused huge damage to the Redsk gang. The people of the Sk gang have won.

…

A moment.

The muscular men clean up the battlefield, and the main content is to punch and kick the Hongsk gang who is lying on the ground to vent their emotions. Then they were **** one by one, ready to wait for the leader of the Hongsk gang to pay for the ransom.

In the corner, Li Cha was talking with Bucky.

"So, these are your brothers?" Li Cha asked.

"Well." Bucky nodded, "It's a real brother. I still have to thank you for this matter, otherwise our people will suffer."

Li Cha shrugged: "It's just a coincidence."

"But no matter what, I owe you two favors. If you have any trouble, you can come to me, and I will help you deal with it." Bucky said, "Even if I can't do it myself, the place where I am The Brotherhood of Steel is also available."

"The Brotherhood of Steel...well, I will come to you for something." Li Cha said, and then asked, "However, I am more curious, why did you join the Brotherhood of Steel?"

"Because there is no money." Bucky spread his hands and said calmly, "In the academy, if a new wizard apprentice like me wants to really learn something, he must find a way to get money. Okay, joining the guild is obviously the best choice for me.

Besides, I still want to redeem myself. I don't want to be Ruth's fiancé for the rest of my life. My king father, don't think about it, you'll have to figure it out yourself, and it will cost a lot of money. "

"Ah, well, I understand." Li Cha nodded and said goodbye, "Since this is the case, I won't bother you to deal with the guild's affairs. I will leave first and see you again when I have a chance."

"Well, see you again when we have a chance."

Li Cha turned and walked to the side, Bucky watched Li Cha leave.

When Li Cha disappeared at the end of the street, a muscular man came over, looked at Bucky, and asked in a low voice, "Brother Bucky, who was that person just now, do you know him? Just now, I heard brothers say , he seems to have helped us defeat half of the Redsk Gang."

"That's a friend of mine." Bucky said.

"Friend?" The muscular man was taken aback for a moment, then looked at Bucky with an expression of "I see".

Bucky noticed it, his eyes widened, and he slapped the muscular man on the head. Because of the advantage of height, this slap seems to have no sense of disobedience. Bucky taught him a lesson: "It's a real friend, you know! You, no, want, mess, think!"

"Ah, I understand!" The muscular man covered his head and whispered, "I understand! I understand!"

Bucky: "..." You know what a ghost!

…

Night, laboratory.

In the main laboratory in the backyard, on the bed in the corner, Pandora was still asleep.

On the table in the middle, Li Cha was busy.

On the table, there is an exquisite thing that looks like a microscope, which was assembled by Richard using the parts he got from Alex during the day.

Generally speaking, the microscope in the earliest sense was made by the Dutch at the end of the 16th century on the modern earth. The relatively well-known Hooke microscope took more than half a century, in the middle of the seventeenth century, specifically in 1665, and was used by Hooke to observe cork slides, and the existence of cells was discovered for the first time.

Now the microscope assembled by Richard is much more advanced than Hooke's microscope, and more similar to modern optical microscopes. There are interchangeable eyepieces, adjustable objectives, condensers, mirrors, stages, and more.

Through Li Cha's deliberate improvement of lens performance, the limit magnification of this microscope can reach more than 1000 times, and the resolution is at the level of a few tenths of a millimeter, approaching the limit - it cannot be higher.

This is not a problem of tool precision, but a limitation of the applied technology of the optical microscope itself.

It is called an optical microscope because it uses light to see. Therefore, the resolution limit is determined by the wavelength of visible light. When the size of an object is close to the wavelength of light, diffraction of light will occur, making it impossible to continue to magnify, and forced magnification is also blurred.

And this limit formula is: σ=0.61λ/NA;

σ is the minimum resolution distance; λ is the wavelength of light visible to the human eye, generally between 400 and 760nm, some people have a slightly larger range, while others have a slightly smaller range, which has certain individual differences;

NA, or ~IndoMTL.com~, is the numerical aperture of the objective lens—the magnification of the microscope, which is only related to the objective lens, not the eyepiece.

It is a dimensionless number in the optical system, which is used to measure the angle range that the system can collect light, and is affected by the refractive index. When using a material with a high refractive index as the medium, such as immersing the objective lens in cedar oil, the NA value can be greater than 1, and the resolution σ of the microscope can reach 0.61*400nm/1.2≈200nm=0.20mm.

In air, the NA value decreases, and the resolution is greater than 0.20mm.

Of course, in most cases, there is no need to pursue the ultimate resolution, and it is enough to use it in the air.

At this time, Li Cha was holding the drift bottle with magic patterns engraved on the inner wall, and inserted a long-handled medicine spoon into it, removed some of the fungi cultivated inside, processed it, put it into the microscope, and placed it in the air. observe.

Turning the **** of the microscope and adjusting the focus, Li Cha looked at it with one eye and murmured: "Sure enough, there has been a mutation, is it a phenomenon of fusion of additives?"

Looking at it for a while, Li Cha raised his head, thoughtful.