As the dark period passes......

No, before the dark period passed, with the withdrawal of the Mage Guild, Banana went to Nanhe County alone to dredge, and everything in the staircase mountain city here entered the normal. Pen, fun, pavilion www. biquge。 info

The upper echelons of the mountain city had long concluded that this round of Light Period demons was very likely to come and gain a foothold on land before the two-month-long Great Darkness Period came.

Internal and external troubles, time waits for no one, where dare to delay?

With the big investor Yuanjingjia as the core, and under the instruction of the Yuanjingjia, and faintly with Liang Kai as the core, a rough but very practical laboratory system was quickly established.

Around the riverside lathes are mechanical laboratories; At present, there are several topics, including power saws, improved textile machines, barrel bullet casting, large ballista catapults, etc.

Around the smelting workshop, which produces hot air balloon furnaces and railroad trolleys, is the metal laboratory; Key topics include magic quenching, magic molding, and large-scale cannon casting.

Magic Optics Laboratory, topics related to the grinding of telescopes and microscopes, mirror focusing, primary optics, and separation spectroscopic observation;

In addition, it is the previous gunpowder chemistry laboratory, the engine laboratory just now, and the energy storage alloy laboratory exclusive to the relatively secret source crystal family.

And, of course, there's the current air chemistry lab.

The purpose is to study hydrogen-like helium-like balloons that can float without heating, but the real purpose is to classify the air and conduct preliminary chemical research.

Hydrogen-like helium balloons are not so easy to make, and it is difficult for balloon balloons to be completely sealed until organic polymer materials are discovered.

At present, all laboratory research is mainly practical, and it is obviously difficult to explain the significance of scientific and technological accumulation to these people, so Liang Kai is a white lie.

The key is the compilation of academic teaching classics, there is no problem with the one-star textbooks in primary school, but when chemistry is involved in junior high school, the current accumulation of knowledge is not enough, and some hard goods must be obtained.

It's just that this speed...... It's a little faster than Liang Kai expected.

Got on the cat again, rose to the sky, climbed over the city wall, and came to the air chemistry laboratory in the urn city and next to the hot air balloon test area.

A group of elementalists of low grade surrounded them, gossiping, noisy, and yelling, like ducks.

Liang Kai hurriedly waved his hand, motioned for them to whisper, and said one by one. It quickly figured out what was going on.

If what they say is true, these people have really done amazing research!

First, two large cloth bags with small mouths, mouth-to-mouth, are put together and then inflated. I don't know how many times I've done this hot air balloon test, so it's not difficult at all.

Then, an Air Elementalist stood in front of the Cloth Pocket and chanted to one of the Void Spells: "Suffocation!" ”

The wind could be faintly heard in the pocket, apparently some kind of convection.

Quickly separate the two cloth pockets, align them with the torches that have been prepared earlier, and compress.

"Hula...... one of the torches suddenly jumped with flames; The other, on the other hand, was quickly extinguished without a sound sound.

Needless to say, the one that fuels the combustion is the oxygen of this world; The one who put out the fire...... It's the other gases of the world besides oxygen.

The so-called suffocation technique is a magic that quickly drains the oxygen around the target's body.

Liang Kai also noticed that after casting the magic, one of the two pockets floated up slightly and the other sank slightly, as if the oxygen density in this world was slightly heavier than air.

The same experiment was soon repeated again, but this time not with asphyxiation, but with combustion. A sub-magic spell contained in the Smelter's Wind Control Array.

After the spell is cast, everything is just upside down from before, the one that is being cast is heavy, and the other pocket is light; The enchanted pocket burns and the other pocket extinguishes.

It seems that suffocation and combustion are basically the same magic, one driving away the other and collecting different effects.

[Tut-tut, it's really convenient to develop science in the other world!] 】

The live broadcast room was full of envy, jealousy and hatred.

It's true, it has been used to study these things on the earth for decades or even hundreds of years, and for people from other worlds, they have actually known all this and even have been using it, but they lack scientific understanding, and once they are mentioned, it is like window paper, and it will be pierced at once.

Moreover, separating the colorless and odorless air on the earth does not know how much effort it took scientists and how many brain cells were consumed, but in the other world, it is a magical thing.

How can this not make people envious, jealous and hateful?

Many people even faintly feel that if the idea of science can spread in the other world, if science can gain a firm foothold in the other world, then the speed of the world's climb to the technology tree is likely to far exceed that of the earth!

Again, magic is so convenient!

Speaking of which, the experiment isn't over yet......

The separation of oxygen was completed in a simple to rudimentary way, proving the existence of oxygen, and on this basis, the separation experiment added another magic.

What magic?

Wind control techniques.

The big bag pulled out the oxygen, and let the wind control technique take another puff, and quickly dried up.

Liang Kai estimates that the so-called wind control technique should control the most abundant gas in the air. Because that's the only way to be most efficient. The corresponding thing on Earth is nitrogen, so I don't know what the Atlas is.

After draining out the oxygen and nitrogen, there was still a little bit left in the cloth pocket, and a bunch of people worked together, squeezing, twisting, and finally using a pumping pump to pump out the accumulated gas and into a balloon.

One tube is not enough for two cans, and two tubes are not enough for three tubes...... The balloon gradually filled, and, as soon as he let go of his mouth, it flew away lightly. These gases are presumably mixtures with a variety of gases remaining, but the overall density is less than that of air.

A circle of elementals looked at Liang Kai proudly. Xiao Shi said that there was gas that could let the balloon go up to the sky without heating, and sure enough, they were separated!

Liang Kai was a little dizzy, trembling and pointing to the sky: "Then, what is that?" ”

Netizens in the live broadcast room are also asking questions.

A circle of elementals looked up to the sky in confusion, wasn't that the balloon that the little master said was lighter than air?

"I'm talking about the outside! The one that envelops the air! ”

Is that clear, clearly a balloon on the earth? When inflated, it's smooth and round, without any seams, and it has to be made of rubber, plastic, or PVC.

Suddenly seeing such a modern thing floating in the air, Liang Kai instantly felt like he had traveled back.

"That's the egg membrane of the rubber lizard?" Several elementalists looked at each other, as if they didn't understand why Liang Kai was making such a fuss about this thing.

"Gum lizards? Egg membrane? Liang Kai calmed down and asked carefully before he understood what was going on.

It was indeed not a balloon, but the egg membrane of a magical beast called a rubber lizard, which was the membrane between the egg skin and the egg white. It's just that the egg membrane of the rubber lizard is very tough and elastic, and the cut excretes the egg whites, and the rest of the part is a balloon in front of you.

It is even stronger and more durable than the earth's balloons, with follicles on the inside and leather sewn on the outside, similar to the earth's foot baskets.

"Why haven't you heard of it before?" Liang Kai was puzzled.

"There are no rubber lizards near the mountain castle. However, there are swarms of large swamp rubber lizards on the rainforest plane, and there will definitely be more in the future. ”

Liang Kai: "......"

Recently, he has been bored with teaching and research, and he is obviously lonely and unheard.

The Otherworldly Advance Base has long days and short nights, and it is falling in the middle of the city, and the railroad minecarts are set up, and the transportation of personnel and materials is super convenient, and the progress is beyond imagination. (To be continued.) )