When it was time to make the hydrogen balloon himself, Marin realized that making a hydrogen balloon was also a high-tech ......

There is no problem in the step of producing hydrogen, Marlin has zinc metal in hand, and dilute sulfuric acid can be diluted by scooping some concentrated sulfuric acid from the tank and adding water. But the collection of hydrogen seems to be a bit difficult. The main thing is to ensure that hydrogen does not leak.

At first, Marlin used a wide-mouth bottle and found it difficult to ensure that the hydrogen did not leak. Later, he made it directly from a thin-mouthed bottle, and directly put a balloon around the mouth of the bottle to collect hydrogen.

But there was something wrong with the balloon, and Marin didn't have high-elasticity rubber in his hand, so he could only have a simple balloon sewn out of cowhide. However, the airtightness of this sewn balloon is not good, and there is a slight air leakage. Although gluing can solve the problem, the problem is that the quality of glue in these years is very poor, and it does not have the ability of 502 glue in later generations. Marin can guarantee that the glue-bonded balloons of this era are fine if they are small, but they will definitely collapse when they are bigger. So, a large manned hydrogen balloon or something, don't think about it.

Eventually, Marlin found a suitable raw material for the hydrogen balloon from the slaughterhouse – pig urine bubbles......

But what made Marin depressed was that the domestic pigs in Europe in this era were smaller in size, and the pig's urine bubbles were relatively small. Looking at the pig urine bubble, which was significantly smaller than the pig urine bubble he had seen in his previous life, Marin was a little speechless.

But in any case, the airtightness of the pig urine bubble is indeed much better than that of the sewn leather ball, and it can be enlarged. Then, in the backyard of the palace of Aurich, I saw the bear child Caesar, with the little Robert who was still walking unsteadily, dragging a few pig urine soaked hydrogen balloons all over the yard......

Later, Marin, who was deeply inspired, went to the slaughterhouse again, made a cow urine bubble, and made a large hydrogen balloon. But unexpectedly, the buoyancy of this large hydrogen balloon was too strong, and when the young Robert took this large hydrogen balloon alone, he was almost taken away. If it weren't for Marin's quick eyes, the future Pope Robert might have ascended to heaven with the cow's urine bubble hydrogen balloon...... The subsequent fall must have been broken into a patty......

Then, Felise, a pregnant woman with a big belly, erupted - she chased Marin, trying to bite and scratch......

You know, Felise sees Robert as the future pope. After all, the temptation of the "Pope's mother" is too great for a woman. Marin so much that it almost shattered her dreams, and the mother's love for cubs and pregnant women were already emotionally unstable, so she exploded.

If another woman dared to do this, Marin would have suppressed it a long time ago. However, Felice is the Pope's daughter, she is too big, and she is pregnant with his child, so Marin has to admit her mistake, and finally calms Felis's unstable emotions. It's also thanks to his martial arts practice that he can hide quickly, otherwise he will be scratched with a blood mark on his face.

Marin, who learned his lesson, quickly took away the large hydrogen balloons made of cow urine bubbles, leaving only a few little pig urine bubbles hydrogen balloons for his two sons to play with.

……

Unexpectedly, this incident alarmed Leonardo da Vinci, and after hearing about the fact that the hydrogen balloon almost took little Robert to the sky, the greatest scientist of this era suddenly had a dream of flying:

"Grand Duke, you can make me a few more cow urine bubble hydrogen balloons, I want to tie them together and take myself to the sky to see ......"

Marlin almost jumped:

"Ada, why don't you think so much about seeking death?"

"Seeking death?" Leonardo da Vinci didn't understand.

Marin hurriedly popularized a wave:

"The hydrogen balloon itself contains flammable and explosive gases, and after the hydrogen balloon reaches high altitude, because the high air pressure is very low, the pressure inside the balloon is much greater than that of the external environment, and then it bursts and explodes...... Bala Bala Bala ...... In short, the queen of heaven is dead! Marin explained that he had been dry for a long time.

Leonardo da Vinci blinked his eyes and said:

"What is barometric pressure? How do you know if high air pressure gets low? ”

Marlin was about to cry - I'm a liberal arts student! Although the basic physical chemistry in middle school is okay, it is not a major......

Then, he had no choice but to take out the ultimate shield:

"This is what my teacher Albert Einstein said......"

Leonardo da Vinci was even more confused......

In desperation, in order to demonstrate the danger of hydrogen balloons, in front of Leonardo da Vinci, he detonated two cow urine bubble hydrogen balloons, instantly burning a sheep as a test subject......

However, Leonardo da Vinci was frightened, as were Angela and Felise. After confiscating the children's pig urine soaked hydrogen balloons, Marin was also chased and killed by the two women for a while:

"Do you want to kill children if you dare to give such a dangerous thing to play with?" Even Angela, who is extremely gentle, went crazy this time......

Marin wanted to cry without tears, so he had to sleep alone in the office at night......

Speaking of which, it was also Marin's carelessness. Although the pig urine bubble hydrogen balloon is small, it is also filled with hydrogen. The two little ones are the age of the bear children, and if they accidentally touch an open flame, they may really be burned. Therefore, in the face of Angela and Felise's questioning this time, he could only admit his mistake. If it weren't for Leonardo da Vinci wanting to play flying, Marin would have almost forgotten the dangers of hydrogen balloons.

……

Although Da Vinci, the old boy, gave up his unreliable plan to use cow urine to soak hydrogen balloons and tie them to the sky because of the high danger, he still had a strong interest in hydrogen and applied for more concentrated sulfuric acid to do experiments.

Marlin looked at it - is this still possible? Leonardo da Vinci is the only reliable scientist under Marin's command, and if he accidentally dies or burns while playing with hydrogen, his losses will be too great.

As a result, Marin had no choice but to divert Da Vinci's attention with something else:

"Ada, can you help me redesign a steering wheel system? The current steering wheel is a bit backward, and I can't turn it alone......"

Marin was right, he had asked a group of watchmakers to help design the steering wheel system, which used a lot of copper gears and copper rods as levers. Although it can also be used, it is only half the effort compared to the rudder that was backward in the early days. In other words, four sailors used to pull the steering lever for steering, but now only two sailors pull the steering wheel at the same time......

However, this was not enough, and Marin felt that it was better to use the later version of the moving pulley and rope. However, there is a problem, that is, the ropes used for navigation in later generations are basically special ropes made of sisal fiber that are resistant to wear and seawater corrosion. And now Marin has only linen ropes in his hands, and the quality is obviously not up to standard. Therefore, Marin originally planned to wait for Mexican sisal to be found, and then let Leonardo da Vinci develop a new steering wheel system. Anyway, it's useless to figure it out now.

But seeing that Leonardo da Vinci was obsessed with dangerous hydrogen, Marin had no choice but to develop a steering wheel system that controlled the rudder plate with a movable pulley rope. Anyway, get it out first, and then change the rope when you have sisal.

"It's time for Ada to stop, right?" Marin breathed a sigh of relief.

By the time the new steering wheel system was developed, it would probably be a long time, and perhaps Leonardo da Vinci had long forgotten about hydrogen......

But it backfired, and within a few days, Leonardo da Vinci calmly came to Marlin with a stack of drawings:

"Grand Duke, I've researched ......"

Marin:......

"So fast?" Marin was a little surprised. He remembers that he had spent a long time working on the steering wheel system for the gear lever series with the watchmakers.

But unexpectedly, Da Vinci raised his head with a puzzled face and asked:

"Will it take a long time? You've come up with ideas, and I'll turn it into a real thing, won't it take a few days? ”

Marin's heart suddenly received 100,000 critical damage......

"It seems that we don't understand the world of genius......" Marin sighed.

It's also my own thoughts, the previous group of watchmakers were just craftsmen at best. Who is da Vinci? He is one of the top scientists of his age. At the same time, people are also super hands-on, otherwise they would not have been able to make a robot lion - although that was around 1516...... If da Vinci's ability is quantified by an identity, then the academician of the Academy of Sciences and the Academy of Engineering is the best description of da Vinci's ability......

Therefore, you can't look at genius from the eyes of ordinary people, people are not on the same plane as you......