Hearing Jia Xu's inquiry, Lu Bu smiled and said: "Because there are candles in the Kong Ming lantern, after the candle is lit, it will produce hot gas, and according to the principle of thermal expansion and cold contraction, the hot gas will rise into the air against the Kong Ming lantern. ” Jia Xu couldn't help frowning as if listening to a book from heaven: "What is hot expansion and cold contraction?"
Lu Bu couldn't help but explain: "Wenhe, I don't know if you have boiled water, when the boiling is about to boil, you will find that the bottom of the pot will bubble upward.
This is because the hot water rises lightly, and the cold water sinks and falls, do you understand this time?"
"No," Jia Xu shook his head. burst "Okay, that's not the point, let's study a lantern."
Jia Xu couldn't help asking: "Lord, why is this lamp called Kong Ming lantern?"
"This" Because this kind of lamp was first invented by Zhuge Kongming, but Zhuge Kongming was still a little kid at this time Lu Bu preempted Kong Ming and invented Kong Ming's lantern.
Jia Xu couldn't help but say: "From the perspective of his subordinates, this lamp was invented by the lord, and it should be called Lu Bu lamp." ” Jia Xu didn't investigate why the Lu Bu lantern was lifted into the air, and couldn't help but say happily: "Lord, let all the soldiers make the Lu Bu lantern as soon as it dawns, and when it is lit at night, you can defeat the enemy with fire."
Lu Bu smiled and said, "Wait a minute, I still need to study this Lu Bu lamp again." ” Jia Xu asked puzzledly, "What else do you need to study?"
Lu Bu explained: "I need to calculate, so that when Lu Bu's lamp rises to the peak, the candle will be burned out, so that our goal can be achieved."
Otherwise, the Lu Bu lamp will only burn when it rises very high, and it will not have any effect at all. ” Yes, it's still thoughtful as the lord thinks Hearing Lu Bu's explanation, Jia Xu couldn't help but suddenly realize.
Soon Jia Xu frowned and asked, "But lord, how should this be calculated?"
This data that needs to be calculated is really a lot, and even Jia Xu, one of the top strategists of the Three Kingdoms, is helpless against this kind of calculation.
Lu Bu couldn't help laughing and said: "Actually, it's not too difficult, in this way, you can find some soldiers to come over and cooperate with me."
Lu Bu first took out a candle, measured the length of the candle, and then found a soldier to measure the time with a leak while lighting the candle.
And Lu Bu led people quietly down the mountain for a long distance, and then found a vertical hillside, Lu Bu first measured the height of the hillside, and then Lu Bu asked a soldier to light Lu Bu's lamp below, and Lu Bu timed it on it.
Based on this, the speed at which the Kong Ming lantern rises can be calculated.
Of course, this value is not accurate.
Because as the candle burns, the overall weight of the Lu Bu lamp will become smaller and smaller, and the speed will become faster and faster in a certain period of time.
The speed calculated by Lu Bu can only be used as a reference meaning.
After calculating this, the rest of the time is to wait for the candle to burn and record the time when the candle burns.
Of course, there is one most important statistic, which is the height of the incense burner.
This was difficult to measure given the conditions at the time.
Fortunately, when Lu Bu was in modern times, he wrote down some famous mountains and rivers in Jiangdong, and the height of the incense burner peak was also recorded by Lu Bu, 354 meters With this raw data, it is possible to calculate how long the candle should be.
When the day dawned, the candle burned out, and Lu Bu finally calculated a value after a series of calculations.
Of course, in fact, Lu Bu also knows that there must be some gaps in this, and Lu Bu finally took a data that he thought was similar after an error correction.
After dawn, all the soldiers got up, and then Lü Bu found about a third of the soldiers and began to make Lü Bu's lanterns.
First of all, these soldiers were taught how to make Lu Bu lanterns, and the most important problem was to keep the weight of all Lu Bu lamps basically the same.
This can only be done from the paper produced, and strive to make the paper used in the production of Lu Bu lantern The size is basically the same.
After making the Lu Bu lantern, I found that there were not so many candles in the barracks.
Ahem, think about it, when you go out to fight in the army, you mostly use torches and carry so many candles at night Then Lu Bu sent people down the mountain to buy candles.
By the time it was dark, all the candles had been delivered.
The candles were cut into uniform lengths and placed in the Lü Bu lamp, and now everything is ready, just waiting for the Lü Bu lamp to be lit in the dead of night.
At the top of the incense burner peak, Peng Shizheng was drinking with several leaders of Shanyue, and there were seven or eight Jiangnan women they plundered next to him.
These Jiangnan women are outstanding, but their clothes are disheveled, their faces are haggard, and they have to force laughter to sing and dance for them.
Huzi drank two sips of wine and asked uneasily: "The big boss, the officers and soldiers are encircling and suppressing us under the incense burner peak, is it really okay According to me, this time the officers and soldiers are really determined to kill us, and there are no less than 100,000 officers and soldiers."
The angry Peng Shi gave Huzi a slap in the face: "Let your mother's fart, the 100,000 officers and soldiers who came from it, the 20,000 officers and soldiers will reach the sky, you kid can drink here with peace of mind, our incense burner peak, there is only one way up the mountain, if you want to attack our incense burner peak, don't even think about it without ten times the troops." ” "Besides, those officers and soldiers are not stupid, you think they will fight with us, besides, with the food we looted, it is enough for the brothers to eat for three years, you ask those officers and soldiers can trap us here for three years, how much food do they need, they can't afford it?"
In fact, even if Peng Shi didn't analyze it, Huzi and his little brothers also understood this truth in their hearts, but after listening to Peng Shi's analysis, they felt more at ease.
Huzi cautiously asked: "Boss, why don't we organize an attack on the camp at night to scare and scare them, and let them get out of the house early."
Peng Shi pouted and said: "You are stupid, just our incense burner peak, as long as they dare to attack, not to mention anything else, we will throw stones down the mountain, and we can easily kill them."
"You stupid guy even thought about giving up our good conditions, running down and desperately going with them, I said what the hell do you think, you can go, you want to go, you can go, you can go up, you can drink, hurry up and take your knife down the mountain to attack the camp."
Huzi's face turned green as he said this, and the other little leaders laughed out loud.
Huzi picked up the bowl and poured all the wine into his stomach, and stood up suddenly.
A small leader next to him said in shock: ", Huzi, you are really going."
Huzi ignored him, but strode directly in front of a woman who was singing and dancing, picked him up and walked out, and walked up and down his hands as he walked.
And this woman is like a puppet, with no expression on her face, and she is completely numb when she is invaded by the tiger.
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The other little bosses in the room laughed uncontrollably.
"Haha, laughing at my father, I thought that Huzi was annoyed by the big boss's words, and he really wanted to go down the mountain to attack the camp."
"What a breed this kid is, he didn't dare to fight back after being taught a lesson by the big boss, and he directly threw his anger on the girls" "I'm going to drink too much, so I'll go back to sleep first" Another small leader, drunken on his face, stood up, went over and walked out with a singing and dancing woman in his arms
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