It's not that hard to open a hospital in another world, right?

Chapter 119 Gretel's Chemical Experiment Diary
On the morning of August 8th, the first experiment.

To reproduce Lavoisier's "Twenty Days Experiment", the mercury in the retort was heated to produce mercury oxide.

Weigh 100 grams of mercury, add it to the retort (thank you for using metric units in the mage's tower, probably the remnants of the elders who traveled through it), and heat it with a stove.

An hour, no change.

Two hours, no change.

Three hours, no change.

The suspicion is that the heating temperature is not high enough for the mercury to react with oxygen.

Move the retort closer to the stove.

The retort exploded...

On the afternoon of August 8th, the second experiment.

Red powder appeared on the surface of mercury, suspected to be mercury oxide.

The retort exploded again...

Improper temperature control.Let me think about what method to use, a mercury thermometer will definitely not work.

April 8st morning.

Bimetallic thermometer!success!
The mage's tower is so deep, there is actually platinum in the tower... The temperature sensing element made of platinum and copper is the best!
August 8 afternoon.

Proceed to the mercury oxide experiment.It is really easy to use a bimetallic thermometer to mark the temperature... No more fear of the retort exploding.

April 8st morning.

When adding charcoal, my hand slipped, and the stove went out... Fortunately, the fire was resumed in time.I really want to have a stove boy.

August 8 afternoon.

Continue to burn.

April 8st morning.

Continue to burn.

August 8 afternoon.

Continue to burn.Come on, Lavoisier did it for 12 days that year, and waited 8 days after finding that there was no change.

April 8st morning.

Elliott's cauldron exploded, smashing the retort...

"Gretel, I'm sorry..." Elliot came over to apologize, "What are you doing?"

Gretel was too busy cleaning up the quicksilver all over the floor, so he didn't have time to talk to him.Master Elliot walked around him cautiously, and as soon as he probed, he saw the smooth writing on the manuscript paper on the desktop:

1. Prove the existence of O
2. Prove that O + combustibles + temperature = combustion
3. Introducing O into spell materials

"what is this……?"

Master Elliot only glanced at it, and found that he couldn't understand half of it, so he walked away immediately.Gretel called him from behind, and he hurried on his feet without looking back.

Experimental ideas and spell design are the secrets and wealth of every mage, and they will never be revealed to others easily!What's more, he saw the words "spell materials"...

New spell materials, new magic, that is the core of a mage's power.If you look at it rashly, it's not much different from Ming Qiang!
Gretel's troubled experiment begins again.

This time, he was careful and moved the experimental equipment to the small room next door, trying not to be disturbed.Luckily for him, the experiment was done smoothly without any problems, and he didn't slip or smash anything.

Until late August, late one night, Gretel's cheers finally sounded in the mage's tower:
"I did it! I proved—"

The air in this world really contains 20% oxygen!The combustion of combustibles is indeed carried out by oxygen!What phlogiston, what essence of fire element, go to hell!

"Great!" A window slammed open on the third floor of the Mage Tower.Master Karan raised his head and roared:

"Why are you howling in the middle of the night! You interrupted me just as I was about to meditate!"

Ah... oh, meditation.Gretel apologized loudly, rushed back to the third floor, and got into his room.Enter meditation, unearth your spiritual power, and feel the world around you:
Among the four elements, earth and water, nothing seems to have changed.Huge changes occurred in Fire and Wind:
The light and elegant power is divided into dots, one part is stable and silent, while the other part is lively and detached;
And the active and jumping part is inseparable from the former, sometimes confused, and sometimes rushes to the fire area, stirring up the little flames.

The essence of combustion is that combustibles combine with oxygen to emit light and heat.

Gretel felt it carefully.Compared with yesterday, my mental strength didn't seem to have increased significantly.He stretched out his hand again, and flicked the candlestick in front of him, a bright flame came out in response, and floated on the candle wick.

The release speed is a little faster than before, and the power of the spell is also higher...but not enough, not enough...

Gretel spread out the manuscript paper, writing and drawing by candlelight.According to the content of Master Gehrman's lecture, in every fire magic, there will be two basic configurations: one is used to gather "phlogiston", and the other is used to select "good air" that can attract phlogiston—

According to the theory of phlogiston, when a substance is heated, phlogiston cannot be decomposed automatically, but must be sucked out by adding air.And "good air" has the property of absorbing phlogiston, which can realize combustion...

Then, the configuration used to gather "phlogiston", under the guidance of spiritual power, points to combustibles; the configuration used to screen "good air" points to the oxygen specially carried as a spell-casting material—

What happens if you do this?
Gretel heard his heart pounding.He rushed out of his room, rushed to the alchemy room on the fourth floor, and set up the alchemy device for heating mercury oxide and producing oxygen again.Once the oxygen in the test tube was collected, he took the test tube and quietly touched the Mage Tower.

"Where are you going, Gretel?"

Suddenly someone spoke in the dark night.Gretel paused and turned his head slowly:

"Eliot? Excuse me, did I wake you up just now?"

"It's okay, I didn't fall asleep at all. Hey, it's midnight, where are you going, and you don't even light a lamp?"

As he spoke, he snapped his fingers, and four balls of light floated up, front, back, left, and right.Gretel walked down with him, and whispered:
"I've improved the Burning Hand, and I want to give it a try..."

"Burning Hand? You're a quick learner!" Eliot praised.He walked into the dark night with Gretel and came to a square behind the mage tower.This is the place where mages practice magic. Elliott focused slightly and raised his hand forward——

A crimson cone-shaped flame spurts forward.Five meters away, a human-shaped wooden target was scorched by flames, and immediately burst into flames.

Elliot waved his hand lightly and extinguished the flame.He turned to Gretel, his eyes bright and curious:
"you try!"

"I might be a little slow..." Gretel replied in a low voice.He held his breath, adjusted his breath, and tried his best to get himself into the spellcasting state:
meditation!

Chant the mantra!

Outline the spell model with mental power!

Stretch out your mental power, let the spell model resonate with the surroundings, pay attention, the configuration that filters the air should point to the oxygen in the test tube!

Reach out, push forward—

boom!
Blazing to whitish flames gushed out from Gretel's palm and burst forward.

Within ten meters, within a 60-degree fan-shaped range in front of him, blazing flames swept everything.Wherever the flames passed, the human-shaped wooden target was immediately burned to pieces, and standing on an iron stake on the ground, bright and dazzling sparks like lightning burst out.

Beside him, Mage Elliot slowly opened his mouth wide.

"This... is this the burning hand? The distance is twice as far as mine, the flame, the flame is more than twice as strong!!! Gretel, are you really just a level 1 mage?!"

　I changed the new chapter for the sixth time... (eyes dead)
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(End of this chapter)