I saw a black hole about the size of a fist appear in front of Yang Chen. Pen, fun, pavilion www. biquge。 info

When all the light arrives at the black hole, it seems to be completely swallowed, and there is no trace of luster at all.

"Is this really a black hole?"

Yang Chen was a little unsure.

In addition to absorbing almost all of the light, black holes have other properties: for example, super gravitational attraction, the event horizon of all objects and light that are drawn into the black hole and the light leaves on the black hole's periphery, strong X-ray radiation and thermal radiation, and so on.

However, when Yang Chen switched to psionic perspective, he couldn't see that this so-called "black hole" had any properties other than devouring light.

It has no super gravitational pull, no event horizon like a wall of frozen images surrounding a black hole, and no X-ray radiation or thermal radiation.

You know, with the strong gravity and mass of a black hole, even a black hole the size of a fist can cause a terrible catastrophe on Earth - it may even swallow up most of the Earth's mass!

But none of this happened.

"Isn't this a black hole?"

Yang Chen wondered.

There is no direct evidence for black holes, but only indirect evidence and theoretical basis - and most of them are unproven, mathematically valid. Its biggest theoretical basis is only Einstein's general theory of relativity, and there is no more.

So, of course, what a black hole looks like is not necessarily exactly what scientists on Earth have deduced. But no matter how it doesn't look like it, at least not at all.

Therefore, Yang Chen felt that this should not be a real black hole, could it be just a black body?

The so-called black body is an ideal object that absorbs all external electromagnetic radiation and does not reflect or project. Light is also a type of electromagnetic wave, so black bodies can also swallow light. Comparatively, the black body should be closer to what Yang Chen is in front of him than the black hole.

"Wait......"

Before Yang Chen could finally come to a conclusion, the psionic perspective he was using suddenly discovered something new:

"This thing...... This thing seems to be strongly distorting space. It's not devouring light, it's just that it's intensely distorting space, so that all the light that passes through this space can't leave this space, but it loops in this distorted space, and it can never fly out!"

Yang Chen's current computing power is so great? Just a little calculation, his pupils instantly dilated, and it was a shocked look:

"At the current level of space distortion, then according to the theory of relativity, this means that this thing will at least have ...... With at least one-tenth of the mass of the Milky Way!"

This result surprised him: "This ...... How is this possible?"

After a strong extraction of spiritual power before, Yang Chen's spiritual power had already been exhausted. It's just that because his cultivation is too low, but his realm is too high, the speed of recovery of this spiritual power is unimaginable, and now he already has almost full state (with his current cultivation) spiritual power.

So he unleashed a psychic spell: "Mass Detection!"

This is a relatively obscure but often handy spirit technique at critical moments.

This spiritual art is only of the second order, but it often plays a very important role on the battlefield.

That's right, as its name suggests, it's a psychic technique used to detect mass. It can detect the mass of everything that exists in space, regardless of whether you can detect it or not.

That is to say, if there is an object that is invisibly close to you, then even if you can't see it with your eyes, use electromagnetic waves, psionic fluctuations, etc., you can't detect it, but as long as it really exists in this world and it has mass, then it will definitely be able to be detected by your mass detection.

In battle, this method can effectively warn of the attack of almost any stealth method: any stealth method, whether it is optical invisibility, electromagnetic wave invisibility, psionic wave invisibility, or even higher subspace invisibility, phase space invisibility, etc., as long as it still exists in this world, or in other words, intends to intersect with the real world, then there will definitely be mass, and it will definitely be discovered by mass detection.

Of course, if you don't plan to intersect with the real world, you are in a universe that is separate from the real world, and mass detection is really ineffective for you. But in that case, you can't touch everything in the real universe: you can't see the light of the real universe, you can't hear the sound of the real universe, you can't make any attacks or other actions on the real universe, so what are you running here invisibly? It's completely useless.

All in all, mass detection was extremely useful in later generations. Not only is it useful on the battlefield, but it is also useful when conducting scientific research, and it is even more useful. Of course, it is not easy to use it well: everything in heaven and earth has mass, and in order to detect the existence of a specific target mass, it is first necessary to eliminate all ubiquitous non-target mass interference. This requires not only high precision, but also powerful computing power and algorithms to find the quality data that represents the target in the vast sea of detection results.

This is already quite a professional thing.

The mass detection spirit technique itself is only of the second order, but its algorithm and high-precision detection method can only be mastered by monks who have cultivated at least the fifth order or higher in satellites! The importance of this algorithm and high-precision method can be seen.

All this is not a problem for Yang Chen now.

If his calculations are correct, this thing, which is not known to be a black hole or a black body, will have at least one-tenth of the mass of the Milky Way. With such a huge mass, in any case, the spiritual art of mass detection could not be ignored, and its data could not be hidden: for that data would be extremely special, and it would be astronomical and would be recognizable to anyone who came to it.

The psychic light representing mass detection flashed, it was a white-looking spiritual light, it fell on the suspected black hole, and it only flashed for a moment, and the light was shattered.

The theoretical basis of mass detection lies in the lowest level of physical laws, so its detection may be misled and camouflaged by various means, but it is impossible to make it invalid. But what it looks like just now...... It's clear that the mass detection spirit technique has failed!"

Yang Chen was very curious, and suddenly remembered something, and suddenly had a flash of inspiration: "Wait, I just habitually adopted active detection." This detection method needs to actively release spiritual light to scan the target, and it is easier to detect those smaller masses - as long as there is mass at the target position, then it will inevitably disturb the detection of spiritual light, so all invisible targets can be found as long as there is mass. ”

However, this technique is only applicable on the battlefield. Because the existence of detection aura will inevitably disturb the target, or the mass of the target will inevitably perturbate, the same is true for detecting the aura, in short, it can find even if it is only one milligram or even lower mass perturbation, but it cannot accurately detect the precise mass of the target itself that brings this mass perturbation.

On the battlefield, it doesn't matter. Because this is a battle, not a study, and the most important thing is to discover the invisible enemy, not to study whether the precise mass of the invisible enemy is one milligram more or one milligram less -- that has no fundamental impact on the situation of the battle.

Moreover, to measure the exact mass of the target, the amount of calculation is also very large, and the calculation also requires constant time.

Therefore, the method on the battlefield is definitely imprecise, it is only a matter of time: I only need to detect you earlier and be prepared for the enemy who comes by stealth, and that will be enough. It doesn't matter what stealth means this invisible enemy uses and what exactly is the exact value of its own mass. At least it doesn't matter when you fight, you can wait until after the war to take your time, but you can't take care of it on the battlefield.

Of course, mass detection is an important spiritual technique, that is, it has active detection techniques and passive detection techniques, which are more accurate.

Yang Chen has been active on the battlefield in his later life, so he subconsciously released an active detection technique.

But even with his vast experience, with the Trojans' endless and almost imaginative stealth attacks, there had never been a situation in which active mass detection could fail.

After reacting, Yang Chen immediately changed the detection method and switched to passive mass detection.

This time, only the aura on his body flickered faintly, and no aura was released: passive mass detection will reflect all the qualities within the detection range in great detail, and all the qualities will be detected, if it is not a scientific research project with extremely high accuracy requirements, it is indeed not needed.

The point is, this method is extremely data-coefficient. Because the mass data of all objects that have a mass reaction on the earth will be detected. Do you think it's just mass data for everything in range? No, of course not.

You know, because of the existence of gravity, almost all objects in the universe with mass can theoretically find their gravitational reactions on the earth - that is, they can be detected by mass detection magic.

Of course, in fact, because of the excessively wide distance, loss and interference in the middle of the way, the mass response that can actually be detected is either not far from the earth, or far away from the earth, but its mass is extremely large.

But even so, the amount of data that can be detected is so large that for a while, even Yang Chen, who has the essence of planetary-level spiritual power and has a powerful natal calculator, feels as if his brain is being stuffed into something rough and blunt, and for a while, he has a splitting headache, his eyes are full of stars, and his brain instantly loses its ability to process.