Master of Thermodynamics

The time spent living in the cave was longer than Renault expected, because from the evening of the third day, a medium-sized storm came to most of the bay, turning this ocean into a dead sea full of turbulent waves.

According to time calculations, the Odin and Haichao should have sent the first batch of "former" slaves to Midway Island, and are now on their way back to Kurun Island.

There is no need to worry about the safety of the fleet. With the presence of "walking weather satellites", the fleet can easily go to the shelter to avoid the storm.

Everything has advantages and disadvantages. On the one hand, the storm delayed the journey of the fleet, and on the other hand, it also blocked the search by the Black Orcs.

From the fourth day on, when Renault wandered around the island of Cullen, he did not even see the shadow of the magic eye. Obviously, their flying mounts could not withstand such a fierce storm.

If it’s just a storm, the big birds can still hold on, maybe it’s easier, because the storm means more and stronger air currents. The big birds can fly with the help of air currents, and they can hover in the sky without waving their wings. 1 ,2 hours.

But the main culprit of the storm is the cold currents that go south in the polar regions. If there is a lot of water vapor in the atmosphere, when the cold current sweeps through, it will bring blizzards. If the air is relatively dry, there will only be storms.

In either case, the temperature is bound to drop sharply, and a dozen degrees below zero is just waiting.

Flying in an environment with low temperature and high winds will lose heat very quickly. For large birds, this is a certain danger. Once the body temperature is low to a certain level, they will lose control of their wings, or they may fall. Into the sea, he was drowned alive.

Reynolds guessed that the reason why the search efforts of the Black Orcs were greatly reduced was that the storm was probably only part of the reason, and the other part was due to the lack of any gains for a long time.

After searching for such a long time, even Mao did not find one. The black **** are not stupid, knowing that the longer time passes, the less chance of finding an enemy, of course they don't want to continue to waste manpower and material resources.

But regardless of whether the Demon Eye will come, or whether the storm will come, it has no effect on Renault.

Anyway, when he wandered out, he was dangling underwater. No matter how good the eyes of the magic eye are, it is impossible to penetrate the water more than 10 meters deep. No matter how strong the storm is, the underwater is still calm.

Because there is too much time in the sea every day, in order to facilitate diving, Renault also made a good thing in his spare time.

It is the diving air bottle.

Although Renault's physique has been infinitely close to the awakened body during the continuous magical bodybuilding process, and his body is extremely good, he can only hold on for 12 minutes by holding his breath and diving.

This data is very powerful on the earth, more than enough to sling the people of the whole earth, but it is not a big deal in the other world. Some water system transcendents can do without appearing in one or two hours.

They even have the skill of using extraordinary power to get oxygen out of sea water. Soaking in sea water for days and nights is not a big problem.

In order to play more pleasantly, Renault had other ideas and wanted to extend the diving time by other means.

Otherwise, you will have to float up once in a while, which not only increases the probability of being discovered by the magic eye, but also makes it like a prostate patient who has to go to the toilet after a while, which is really unpleasant.

More importantly, he has studied magic black technology for so long, he can develop some rune equipment, for Mao to hold his breath like a stupid alien turtle, is it uncomfortable?

Of course it's uncomfortable!

So Renault decided that this master would never hold his breath.

Naturally, the idea of ​​making a "diving air bottle" came to his mind.

In the past few months, a large number of magic black technologies have been developed in the territory, and the front technology for manufacturing diving air bottles has basically been lit. It is only a matter of course to smash out the diving air bottles.

The air storage structure of the air bottle can fully replicate the high-pressure air storage tank on the high-pressure air gun, so that it can be automatically inflated. When the rune disc is used up, it can be inflated on the spot, which is convenient for a batch.

But what is stored in the air bottle is high-pressure air. If you breathe this thing directly, you will only be embarrassed. Therefore, a pressure reducing valve is needed to convert the high-pressure air into atmospheric air.

The principle of the pressure reducing valve is also very simple. A piston cylinder with an inner spring is installed, and Renault can push one out in minutes.

From making a decision to shoveling out the first diving air bottle, Renault only took 3 hours, and the efficiency was arrogant.

The internal pressure of the air cylinder is 80 atmospheres, and the gas stored in it can be breathed underwater for at least 4 hours, which perfectly meets the requirements of conventional diving.

It's just a little heavier, up to 15 kilograms, which is very heavy for the people of the earth, but for the tall people of other worlds, it is nothing at all. In addition, the use environment is underwater, and the buoyancy of sea water can also reduce a part of the weight.

Four hours of diving time is also sufficient, because after a normal person dives for 4 hours, the physical exertion is already very large, if the time is longer, all one's strength is weak, and there is a possibility of casualties.

The results of the diving air bottle test also made Renault very satisfied. He carried the air bottle on his back and waved in the sea for more than 2 hours. He touched hundreds of conch shells on the bottom of the sea. Resurfaced once.

When Renault used [Nian Motive Force], holding a pile of conch seashells piled into a hill, knocking the door of the cave, everyone was shocked.

In the process of trying out the air bottle, Renault also had a new idea: can it come up with a set of diving-specific power devices?

Equipped with an air bottle, he can dive in the water for at least 500 kilometers in one go. As long as he floats several times in the middle, he can cross the Pacific Ocean alone.

The width of the Pacific Ocean in the east-west direction is less than 20,000 kilometers. With Renault's abnormal swimming speed of more than 150 kilometers per hour, it can swim across the Pacific in a week at most.

But this is only limited to him, ordinary people do not have this ability, even the fisherman with the best water, can swim up to 30 kilometers with a diving air bottle on his back, not even Renault's fraction.

So, is it possible to increase the speed of ordinary people?

The answer is of course, yes!

And the solution is readily available-water jet pump!

The magic pumps are all available, isn't the magic water jet pump a piece of cake? Wouldn't it be enough to turn the blades backward?

Therefore, after Renault fiddled with it for half a day, the diving air bottle transformed into a "magic underwater propeller".

Integrating two small magic water jet pumps on the air bottle, another equipment with "epoch-making significance" was born.

The magic underwater propeller is very useful.

Whether it is diving underwater to collect conch and seashells or collecting various algae, it is no longer a chore. With the physique of people from other worlds, you can easily dive to 1,200 meters deep underwater, don’t worry. What kind of messy things like decompression sickness.

More importantly, it can also be used in the military.

For example, establish a special forces team equipped with magic underwater thrusters to perform various tasks from underwater, such as infiltrating enemy ports, destroying enemy ships, and shooting enemies underwater.

Anyway, magic air guns are not afraid of water, so the special forces team can carry air guns on missions.

From this point of view, the magic underwater propeller must be classified as a controlled equipment and not allowed to be exported.

After pushing out the first underwater propeller, Renault called a few team members to protect the island and let them try it out.

Facing the lord's command, these brawny men did not hesitate to take off into bare pigs, put on underwater propellers on their backs, and jumped naked into the icy water.

The results of the test made Renault quite satisfied. The island guards didn't have to do anything, and the swimming speed easily exceeded 20 km/h.

They also made two comments carefully.

The first one is that it was so cold. After 20 minutes of swimming, my hands and feet were so cold that I lost consciousness.

Renault just curled his lips when he heard the words and ignored them.

Isn't this nonsense? As long as you are not dead, you know that the water temperature in the Winter Moon is very low.

It was because it was very cold that I specifically called your island guards to come and test.

The island guard team is essentially a professional army in the territory, and the members are actually soldiers. When fighting, is it because of the cold that they stopped fighting?

Let you go into the water, squeaky and crooked wool.

What's more, the master has already said it in advance, if you can't hold it anymore, come up quickly.

The second one is that because the speed is too fast, the oncoming water is too violent, and I can’t open my eyes...

This opinion is very valuable. It shows that when using underwater propellers, you must be equipped with "goggles" or a diving helmet with goggles.

This article also inspired Renault.

In addition to goggles, divers should also be equipped with a thick "tight diving suit", the material can be directly used Nima glue, so that on the one hand, it can keep warm, on the other hand, it can protect the body and avoid hitting the reefs on the sea floor and causing injuries.

In addition, wearing a tight diving suit can increase swimming speed, although not much.

Because the skin of the human body is very thin and the muscle tissue is relatively soft, under the action of water pressure, the muscle tissue will continue to deform and increase the flow resistance.

But Nima rubber diving suit is different. It has good toughness and strength, and it will not deform easily.

Marine mammals such as dolphins, seals, and whales on the earth, without exception, have thick skins, and it is precisely because of this principle.

However, diving helmets and diving suits, two kinds of equipment without technical content, don't need Renault to worry about, just throw them to the people at the Rune Research Institute and let them design and manufacture them.

The storm lasted for three full days before it began to weaken. At noon on the eighth day of staying on Kurun Island, the figures of the Odin and Haichao finally appeared on the sea level in the distance.

When the news was passed to the cave, enthusiastic cheers broke out instantly.

Even more than 900 "former" slaves are no exception,

It's time to go home.