"The frequency of radar emission is different, and the corresponding reconnaissance object is also different, so radar will also have many classifications according to its own functions, and the most common is used for meteorological monitoring."

Emiya stood on the lighthouse, holding a radar sword in his hand, explaining and doing tests.

According to what Master Liu Dun said just now, for about three consecutive days, when the frequency was adjusted to a certain frequency, there was a huge red dot approaching the east bank.

There is no shortage of suspicions of exaggeration, but there is also a reason for the incident, and what Wei Gong is most worried about is-

If it's not human, it's a problem.

"What is the speed of the anemometer right now?"

"24 kilometers per hour."

Thousands of years ago, people in this world have built windmills and know how to monitor wind speed through windmill-like devices.

After the advent of Yue Chuanwo, all weights and measures were gradually unified, and these data were quantified accordingly.

Emiya nodded, "It doesn't look very tall yet." ”

Jian Rin Sakura and Liu Dun looked at him suspiciously, not understanding what he was doing.

Seeing the confused expressions on their faces, Emiya explained with a smile, "The radar emits electromagnetic waves, which are scattered and reflected when encountering clouds, water droplets, frost, snowflakes, etc. in the air. For example, it is possible to predict whether the weather will be rainy or sunny in the future......"

Liu Dun nodded, "In fact, we also have our own means of predicting the weather, such as looking at the clouds, if it is a fish scale cloud, then it may rain, or there will be strong winds." ”

Wei Gong nodded, generally speaking, the progress of human civilization is similar, starting from experience first, and then summarizing the laws.

"So what's it this time?" Kenrin Sakura looked at him nervously, "Is it a pirate?" ”

Emiya shook his head, "It could be a typhoon." However, it is not easy to say, and it is necessary to compare the data of many observations to know. ”

It would be nice if there were satellites, and it would be better to see it on satellite cloud images.

Wei Gong regretted a little that he didn't listen to Cui Xiaoxiao's words and launched a satellite earlier.

He looked back at Master Liu Dun, "You have been monitoring this frequency for the past two days, and you have recorded the graph and the wind speed at that time every hour. ”

Liu Dun nodded and hurriedly ordered.

"But Master Emiya, what was the typhoon you just said?"

When Wei Gong heard him ask, he reacted that there is no such thing as a typhoon in this world.

There are two theories about the origin of the "typhoon". The first type is "transliteration", which includes three types: one is evolved from the Cantonese "gale"; the second is evolved from the Hokkien dialect "Fengtai"; The third is that during the occupation of Taiwan by the Dutch, it was named after the character Taifeng Typhoon in the Greek epic "History of Theocracy". The second type is the "source theory", because Taiwan is located in the Pacific Ocean and the South China Sea, most of the typhoons have a northward path, and many typhoons pass through the Taiwan Strait and enter the mainland, so they are called typhoons.

And no matter which one it is, it has its own unique regional characteristics of the times, and it is impossible to replicate it in this world.

Emiya looked back, "What do you call the strong tropical winds from the sea, accompanied by a lot of rain, and even the kind of winds that cause huge waves?" ”

Several people in the room looked at each other, and then said in unison—

"Dragon Wind."

Emiya nodded, remembering a new word.

In the Philippines, they call Typhoon "Baguio Wind" and in Mexico "Whiplash." ”

In the Dream Sword Country, it is called Dragon Wind, perhaps because they themselves are a country that worships sea dragons, and there are many legends of sea dragons recorded in the founding history.

How to say it, there is no so-called typhoon in this world, but the description of the dragon is similar to what Emiya knows, which has to be said to be a coincidence.

Emiya looked up at the sky.

In the distance, the clouds were low, and it was drizzling outside.

If it's a small-scale tornado, it does look like a dragon.

But the typhoon ......

It's more like a giant whirlpool with no boundaries in sight.

The sustained destructive power of a typhoon is not comparable to that of a tornado.

……

After two days or so of observation, although the wind speed fluctuated somewhat, it was gradually approaching 60, and according to this trend, it is really possible that it is a typhoon envisioned by Emiya, and it is very likely that the level is not low.

A typhoon is a powerful cyclone, and such high wind speeds can be measured here, but it is even more terrifying at the edge of the typhoon.

After being reminded by the palace, Kenrin Sakura has already issued a ban on the sea, but fortunately, not long after the last fish-eating beast incident, in order to recuperate, the fishermen have changed jobs with tacit understanding.

The more frequent sea traffic is some cargo ships that run merchants to do logistics.

After the ban on the sea, the sea appeared empty.

It's just that there's one thing that's weird -

They conducted wind speed tests in multiple ranges, and with radar monitoring, they were able to get the direction and distance of the typhoon source in general.

And that focus, as if fixed by something, remained motionless about two hundred kilometers away from Yunmenggang.

It's just that the wind is getting stronger, and at this rate, it will reach the level of a typhoon that can cause damage in another day.

Could it be that tropical storms are also gathering strength?

The wind speed and the speed of movement of a typhoon are completely different things, the wind speed of a typhoon can reach very high and move very slowly, which is affected by the surrounding environment.

But it shouldn't be that slow.

Emiya gritted his teeth and looked at the sea.

There is no higher wall of waves on the sea yet.

This shows that the typhoon is still a certain distance away from them.

Even with satellite imagery, it is impossible to accurately predict the time and trajectory of a typhoon, let alone such rudimentary ground-based radar equipment......

Even if there is a super typhoon, it will not necessarily make landfall from here.

However, Emiya frowned.

If a super typhoon does make landfall, even if it is just a marginal ball, the damage caused is immeasurable.

With the current flood prevention and disaster prevention capabilities of Mengjian Country, I am afraid that it will not be able to cope with such a large typhoon.

"Your Majesty Sakura, we need to evacuate the nearby residents quickly."

"Huh?"

"I'm afraid that the dragon wind will come ashore, so I have to do the precautionary work as soon as possible."

"Okay, I see." Kenrin Sakura nodded and walked out of the tower.

When she turned around, Wei Gong Lianren flew high with swords.

"Emiya, what are you doing?"

"I'll go see what's going on over there."

Sword Rin Sakura gritted her teeth, and Edgeworth followed him.

"It's too dangerous, you can't go alone." She reached out and grabbed the back of the guard.

Emiya turned around—

The heavy rain in the sky wet Kenrin Sakura's face.