The experimental design was not standardized, and the direct consequence was a sloppy dinner and overtime after dinner.

However, choosing to use only one crystal for experiments is also a precaution against potential unknown risks, and it is purely a helpless move under limited circumstances.

Kraft may be annoyed by the time wasted, but he doesn't want to see several samples change unexpectedly. At least one afternoon of experiments proved that there were factors in the attempt to make it melt safely and slowly.

Lit by candlelight, he started trying again. This time, a lens was placed on the table for observation.

"This time we're going to use three." The professor took out three black salt grains of similar size, put them in the glass, thought about it and added another one, "No, add another control." ”

In the spirit of trying his luck, he guessed that the later operation caused the change, so he simply started with the liquid, dripping acid and alkali solvents, and once again fresh blood drops taken from rabbit ears.

In order to reduce subjective influence and visual bias, Kraft and Koop each brought a chair, sat at the table and stared at the hourglass, observing each upside down, independently of each other, and comparing the results with each other.

Then there's the boring waiting.

The hourglass reset cycle is about 5 to 10 minutes, which is neither long nor short, and will interrupt any business or entertainment that requires a whole block of time.

The need to pay attention to time repeatedly makes it difficult for the mind to relax completely, and can only take a short break to take a walk in the close, or rely on chatting to pass the time.

But Kraft wasn't a very talkative person, and Koop lacked the ability to create conversations, and the atmosphere quickly fell silent.

The sense of emptiness of no one at night is magnified, the sense of existence in the space outside the light is weakened, and those corridors and halls seem to have lost their popularity, leaving them, and the isolated laboratory has become a closed container adrift in the void.

The rabbits were still eating, and even earned some turnips and lettuce leaves for themselves, and the rustling of chewing became a monotonous background sound for experiments.

"It's so quiet." Koop carefully took the convex lens from Kraft's hand, squeezing it tightly for fear of getting rid of it, and for fear of damaging it and reducing its strength.

He knew where it came from. Unlike glass products, which do drop in price after improved processes, lenses are made from a single piece of high-clarity crystal, and need to be as abrasive as possible, so expensive that people can restrain their instinctive hand tremors.

Correspondingly, the observation effect is also very good. Black crystals the size of a grain of salt are magnified, and the corners are clearly visible to the eye.

"Nothing has changed for the time being."

"I look at it too." Kraft swallows a hache back into his stomach to prevent it from spreading between the two. It's better to talk about something, the biggest enemy of staying up late is always boring.

"Speaking of which, do you remember the incident in the Salt Tide Zone?

"Of course."

"Someone added this liquefied stuff to the well water, and just enough to cover the bottom of the bottle caused the entire area where the well water was being taken."

"That's it?" Koop shifted his chair back, it was hard to connect the black particles to the experience, after all, these things were really inconspicuous from a distance, "but it is ...... Black sand? ”

"So I want to know how it melts and how it keeps it in a liquid state."

"Uh, and then?" According to the volume in their hands, if they were all dissolved, Koop felt that there were several times the dose described by Kraft.

Like the urge to leap on the edge of a cliff, the uncontrollable imagination of these quantities being thrown into the well is enough to send the entire port of Wendeng into a deep sleep.

He looked at the box that held the vial of black particles, and felt a visceral sense of fear. It contained enough to destroy a city.

The little drowsiness that had just arisen was instantly dispelled.

"Oh, don't worry, after all, it hasn't melted yet, and even if it does, it won't keep it." Kraft flipped the hourglass, took out the lens and looked at it, and handed it to Koop, who was in good spirits.

At present, it seems that the refreshing effect is significant, at least in the first half of the night, the other party does not want to fall asleep next to this thing.

However, it didn't take long, and after the hourglass was flipped more than twenty times, with the help of a crystal magnifying glass, Kraft observed the first signs of change.

A passivation that is difficult to observe with the naked eye occurs on the edges and corners of rabbit blood-soaked particles. He made a note and quietly handed the lens to Koop.

"Seems like a little changed?" An uncertain nervous voice squeezed out of Hu's mouth, and the unanimous judgment of the two affirmed that the change had occurred.

So lucky to be so casually blinded? Many possibilities flashed through Kraft's mind, and they were denied one by one. If it were blood, it would have liquefied and scattered in the pagan body.

Surprised, he retrieved the lens and looked at the one soaked in acid.

Different shapes, the same smooth and passivated edges and corners, and the samples in the acidic reagent also showed a precursor to melting.

"It doesn't make sense at all...... Kraft turned to the one in the lye, and all three subjects were in the process of being transformed, synchronized to a point where they could be observed.

For a while, I really can't think of any special commonality among the three.

A bad premonition caused him to look at the last untreated crystal as a control, and realize that it was the same as its counterparts soaked in droplets, with faintly dull edges and corners and a slightly moist ice-like texture.

This trend is normally difficult to notice, and only when you look closely at the contrasts will you find it subtly.

"The control group is also melting?" Their state highlights a state that goes its own way, regardless of the physical and chemical conditions given, and only cares about stabilizing or melting on its own, which is completely unreasonable.

The melting trend in the control group suggested that the experiment was fundamentally designed to fail, and the key variables were completely uncontrolled.

On the other hand, the experiment was also successful, knocking out most of the speculation and confirming that there was a factor that had a consistent and sustained effect after the experiment began.

It's definitely not a reagent, blood or anything like that.

"Something's interfering with the experiment." Kraft sniffled, concluding that it seemed as if it would be possible to sniff out some signs of an anomaly in the air, but only the stale scent that had not been activated for a long time.

He thought of candlelight, a certain ingredient in the air, which should not be something that was common and easy to touch. If it were so simple, I would have had a bottled black liquor in my hand now, not a pinch of black salt.

Perhaps because of the site, what was left in the burned dome lab that would have a constant radiation effect?

Kraft left the table and walked over to the box, which was isolated on the side, and opened it to observe the sample inside.

The samples remained in a salt-crystalline solid, striking the walls with stubborn edges and corners.

"Could it be that this interference source can still be confined to the experimental tabletop and deliberately come against me?"

Two new patients came in the middle of the night, and the night shift happened to meet the department director's rounds, which dragged on until nearly noon, and (ω') went to listen to lectures in the afternoon, which was delayed until now.