"Professor Lin, what is this? A mirror?" Lydia used a chair to prop her feet up, leaned on the lab table, and stared at the smooth and flawless round mirror in front of her, asking in surprise.
There are mirrors in the wizarding land, but they are all polished copper mirrors. It is said that some wizards will cast magic on them, but Lydia is sure that even the best copper mirror in the wizarding land is not one-tenth as good as it!
"Yes, I call it a glass mirror." Lynn nodded with a smile.
Darren and other halflings also gathered around, staring in amazement at the clear image reflected in the mirror.
"Perfect, so perfect... It's even clearer than the reflection on the lake." Darren couldn't help but exclaim in admiration. He had never seen such a beautiful mirror. It was like a work of art.
After obtaining Lynn's permission, the halflings carefully reached out their hands, held the round mirror in their hands, and gently touched the transparent mirror surface, as if the precious round mirror would be broken if they exerted too much force.
Lin En found it a little funny to see Darren and the others' expressions as if they had seen rare treasures. He originally thought that since the wizards had a preliminary understanding of the movement of stars, they should have pointed out glass, a necessary technology for astronomical observation, long ago.
After asking Harof, I found out that the wizards of the prophecy school had developed various kinds of long-sighted magic in order to observe the starry sky, and even upgraded the alchemical eyepieces several times, but they had never conducted research in this area.
There was no other way. Magic was so useful that Lin En began to get used to using magic to solve problems. For example, this time when making glass, normally a furnace was needed, but he solved it all with just a flame magic.
Lydia fiddled with it left and right, staring at her reflection in the mirror with delight. No girl could resist such a smooth, flawless glass mirror that could clearly reflect her face.
"Professor, is it made of this special sand?" Lydia handed the round mirror to the next halfling reluctantly, looked at the basket of raw materials on the table, and asked curiously.
"How is this possible? This must be the effect of magic!" Darren said with great certainty.
How could such an exquisite glass mirror be made simply with some sand and stones?
So there must be some magic added!
Lydia ignored Darren and looked directly at Lynn, waiting for his answer.
"Yes, the main component of glass is silicon dioxide, which can be found in sand. The production process does not require any magic. You just need to use high temperature to melt it and then shape it into the shape you want..." Lynn nodded, confirming Lydia's guess, and then briefly explained the production process of the glass mirror.
Now that the glass mirror has been made, Lin En is naturally not satisfied with simply using it for an experiment. This novel product is bound to set off a new trend in the land of wizards.
As for the subsequent mass production, it is impossible for him to be responsible for it personally. There are not many people who are trustworthy now. These halflings have at least been tested. During the period of operation of the airship, Darren delivered a sufficient amount of magic gold coins to him every month, and there was no such thing as embezzlement.
As for the leaked airship blueprints? Darak got some of the information after he got Ralph's body from Sheriff Leia and searched his memory with psychic magic.
He couldn't blame a dead man for not being able to keep the secret in his mind, right?
Of course, Lin En also retained some slightly more complicated techniques, such as the production methods of mercury and tinfoil. He planned to teach them to several wizard apprentices separately and split the entire production process into parts, so as to avoid the leakage of the formula to the greatest extent.
The cost is also extremely low, probably only a few silver coins are needed.
But if it were for sale, Darren believed that even if the price was twenty magic gold coins, there would be people rushing to buy it!
The profit is thousands of times, even if it is robbing money, it can’t be done this fast!
…
Two days later, at noon, thousands of wizards gathered in the hall of the magic seminar, discussing the next topic with great anticipation.
They have all received the news that Lin En will be here today to reveal to them the last secret of the planet beneath their feet.
"What method do you think Lord Lin will use to weigh the weight of the planet under our feet this time?" Raphael looked at August beside him and said thoughtfully.
He thought about it for two whole days and pulled out a lot of hair, but still had no clue. It seemed like something that was simply impossible to do.
"Probably using the division method, just like when measuring the circumference." August's face was filled with a confident and easy-going smile.
"Now that we know the volume of the planet, we just need to select a few areas as samples, weigh them, figure out how many cubic meters of soil weigh one ton, take an average, and then use the volume ratio to roughly estimate the weight of the planet!"
"Of course, this is just my humble opinion. The geology of different regions is different, and there are special situations such as mines and oceans, which need to be discussed separately." August said very modestly, but still revealed his estimated value. "The weight I calculated is about 300 trillion tons! The error should not exceed 20%!"
Raphael and others also sighed that August was worthy of being the star of the magic world. His brain was really useful and he could actually think of such a method.
They all heard that after Lin En returned to Greenridge, he immediately had two piles of sand and gravel transported over. Now thinking about it, he was probably estimating their weight.
Roll also looked at August with great admiration. He felt that his teacher had seen the truth, and this was probably the only way!
As they were talking, a burst of sneers came from the side.
"Mr. Korol, do you have any different opinions? Or have you found a better way to measure weight?" Roll looked at the wizard beside him with dissatisfaction.
"Sorry, I don't know how to measure weight." Korol shook his head. He only knew that Lin En needed the sand and stones not for measuring weight, but to make some experimental equipment.
Without waiting for anyone to question him, Koror pointed to the curtains that were suddenly drawn around him and said with a smile, "But I guess it has something to do with the darkness!"
(End of this chapter)