"Professor Linn, what is this? A mirror?" Lydia used a chair to prop her feet up, lying on the experimental table, staring at the smooth and flawless round mirror in front of her, and asked in surprise.
There are also mirrors in the Wizarding Land, but they are all polished bronze mirrors. I heard that some wizards will also add magic to them, but Lydia is sure that even the best bronze mirrors in the Wizarding Land are inferior. One ten thousandth of it!
"Yes, I call it a glass mirror." Linn smiled and nodded.
Darren and other halflings also gathered around, looking at the clear image reflected in the mirror in amazement.
"Perfect, it's so perfect...it's even clearer than the reflection on the lake." Darren couldn't help but admire, he had never seen such a beautiful mirror, it was like a work of art.
After obtaining Lin En's permission, the halflings carefully stretched out their hands, held the round mirror in their hands, and gently touched the transparent mirror surface, as if they would tear away this precious round mirror with just a little force. The mirror is broken.
Linn looked at Darren and others' expressions as if they had seen rare treasures, and it was a little funny. Originally, he thought that since wizards had a preliminary understanding of the laws of the stars, glass, a necessary technology for observing astronomy, would have been available for a long time. Just click it.
After asking Harrov, I found out that the wizards of the prophecy school had developed a variety of far-sighted magic in order to observe the starry sky. They even upgraded the alchemy goggles several times, but they refused to study this aspect.
There was no way, magic was so useful that Linn started to get used to using magic to solve problems. For example, making glass this time normally requires the use of a furnace, but he solved it all with just one fire magic.
Lydia fidgeted left and right, staring at her reflection in the mirror with joy. No girl could refuse such a smooth and flawless glass mirror that could clearly reflect her face.
"Professor, is it made of this special sand?" Lydia reluctantly handed the round mirror to the next halfling, looked at the baskets of raw materials on the table, and asked curiously.
"How is it possible? This must be the effect of magic!" Darren said with great confidence.
How could such a beautiful glass mirror be made from just some sand and stones?
So it must be magic!
Lydia ignored Darren and looked directly at Lynn, waiting for his answer.
"Yes, the main component of glass is silica, which is 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 what you want..." Lin En clicked He nodded, confirming Lidya's guess, and then briefly explained the process of making a glass mirror.
Now that the glass mirror has been taken out, Linn is naturally not satisfied with using it as a simple experiment. This novel product will inevitably 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 experienced the test. During the period of the airship operation, Darren will have enough money every month. A large amount of magic gold coins were delivered to him, and there was no such thing as lining his own pocket.
As for the leaked airship drawings? That was because Darak obtained Ralph's body from Sheriff Leia and used psionic magic to search the memory to obtain part of the information.
He couldn't blame a dead man for not keeping the secret in his mind, right?
Of course, Linn also retained some slightly more complex techniques, such as the production methods of mercury and tin foil. He planned to teach several wizard apprentices separately and split the entire production process, so as to avoid the confusion of formulas to the greatest extent. Give way.
After Lin En explained how to make a glass mirror, all the halflings were a little surprised. Apart from the high-temperature furnace required to melt quartz sand, there was almost no technical difficulty.
The cost is also extremely low, probably only a few silver coins are needed.
But if it is for sale, Darren believes that even if the price is twenty magic gold coins, there will be people rushing to buy it!
The profit is thousands of times, even if you rob money, it will not be so fast!
…
Two days later, at noon, thousands of wizards gathered in the magic seminar hall, discussing the next topic with great anticipation.
They have all received the news that Lin En will be here today to reveal the last secret of the planet beneath their feet.
"What method do you think Mr. Lin will use this time to weigh the planet under our feet?" Raphael looked at August next to him and said in a deep voice.
He thought about it for two full days, pulled out a lot of hair, and had no clue. It seemed like something that was impossible to do.
"Probably using the division method, just like when measuring circumference." August's face was filled with a confident and easy-going smile.
"Now that we know the volume of the planet, we only need to select a few areas as samples, weigh them, find out how many cubic volumes a ton of soil weighs, take an average, and then calculate based on the volume ratio. Roughly estimate the weight of the planet under your feet!"
"Of course, these are just my humble opinions. The geology of different regions is different, and there are also special situations such as mines and oceans, which need to be classified and discussed." August said very humbly, but still revealed his own estimate value. "The weight I calculated is about 30 trillion tons! The error should not exceed 20%!"
Raphael and others also lamented that August was indeed a star in the magic world, and his brain was really good, and he could think of such a method.
They had all heard that after Linn returned to Greenrial, he immediately had two piles of sand and stones transported over. Thinking about it now, he must have been estimating their weight.
Rohr also looked at August with great admiration. He felt that his teacher had seen the truth. This was probably the only way!
While several people were talking, there was a burst of laughter from the side.
"Mr. Korol, do you have any different opinions? Or have you found a better way to measure weight?" Rowel looked at the wizard beside him with dissatisfaction.
"Sorry, I don't know what the weight measurement method is." Korol shook his head. He only knew that Linn needed the sand and stones not to measure weight, but to make some kind of experimental equipment.
Then, before anyone could ask questions, Koror pointed to the curtains that were suddenly closed around him and said with a smile. "But I guess it must have something to do with the darkness!"
