The glass blowing process went smoothly. Although two small bottles and one glass tube were blown out in the middle, four qualified small bottles and four qualified thin glass tubes were finally obtained.

　　 With these two things, there is no problem in making a simple thermometer.

　　 Old Wood was called over. Of course, he came with his woodworking tools and a small section of oak.

　　 It didn’t take long for the old wood to create four small oak stoppers with a hole in the middle for the four small bottles.

　　 The size of the oak stopper is just enough to plug the mouth of the small glass bottle, and the hole in the middle is just right for the glass tube to pass through the middle.

　　 Momograss has pigments extracted from plants that are used to dye cloth. The stone bear will come a little, then melt it in the water, and then pour the indigo blue water into four small bottles. After it is full, plug it tightly with an oak stopper, and finally insert the glass tube through the small hole of the oak stopper until it reaches the top of the vial.

　　 Next, use melted wax to seal all the gaps between the small hole and the glass tube.

　　 Because of the capillary phenomenon, the indigo water in the vial climbed a distance along the glass tube, making the height of the water in the glass tube a bit higher than the glass bottle.

　　 Finally, Shixiong dropped two drops of the squeezed peanut oil from the top of the glass tube. The role of these two drops of oil is very important, they can form an oil film on the upper layer of the water surface in the glass tube, which can prevent the water in the glass tube from evaporating.

　　 At this time, the recommended thermometer is almost done. You only need to mark out the various temperature values ​​from the glass tube, and this simple thermometer is completely completed.

　　It is not difficult to draw a more accurate temperature value on the glass tube.

　　 In later generations, even elementary school students knew the principle of thermal expansion and contraction, and the thermometer was made using the principle of liquid thermal expansion and contraction.

North America has now entered the coldest "Long Night Moon." In the Cherokee era, this is December, but it should actually be between mid-twelfth and mid-January of the Gregorian calendar. A period of time.

　　 Because the Cherokee’s era method is calculated based on the full moon, it is a bit similar to the Chinese lunar calendar, so there is a certain gap between it and the Gregorian calendar date.

　　 In the coldest long night moon, after night, even at the foot of the Great Smoky Mountains, the temperature will be below zero. Not to mention that there was a heavy snowfall just two days ago, and the snow does not turn cold, and now it is the coldest time.

　　 In order to make a simple thermometer, Shixiong took a tub of water and left it outside the house as early as last night. After one night passed, the water in the tub had already frozen.

　　 poured out the ice in the wooden basin, smashed it into several large pieces, and mixed it with cold water and put it into the wooden basin. At the same time, the four small bottles with glass tubes inserted into the tub, most of the small glass bottles were immersed in the ice-water mixture.

　　 After waiting for more than ten minutes, the temperature of this basin of water reached zero degrees. The temperature of the ice-water mixture is the best reference temperature of zero degrees Celsius even in later generations.

　　At this time, the indigo water column in the glass tube also stabilized at a height, and the temperature value represented by this height was zero degrees Celsius.

　　 made a mark from that position, and then Ishikuma took out the four small bottles with glass tubes, and put them into the frying spoon with a flat wooden board underneath, and then added cold water.

　　 The height of the cold water is one piece lower than the mouth of the vial, and then the water is ignited and boiled.

　　Because the glass bottle is heated with cold water, there is no need to worry about the small glass bottle exploding.

　　 The water in the scoop is not too much, so the water in it boils quickly.

　　 The reference temperature at this time is 100 degrees Celsius.

　　 Although the location of the Gaoshu tribe has a certain altitude, this will cause the water to boil at a temperature of less than 100 degrees Celsius. But this is not a high-altitude area after all, and the altitude of the tribe is definitely not more than 400 meters, so even if there is an error, it can be at most about one degree Celsius.

　　 This is not a precise thermometer. The error is within an acceptable range.

　　The value of one hundred degrees Celsius is marked out. As long as the distance from the value of zero degrees Celsius to the value of one hundred degrees Celsius is divided into one hundred, then each one represents one degree Celsius.

　　 In the next step, you only need to fix the small bottle with the glass tube on the wooden board, and then draw the corresponding temperature value on the wooden board, then this simple thermometer is completely completed.

　　 This job is also done by old wood, and he is best at doing this kind of fine work.

Finally, when the four simple thermometers were completed, they were hung on the four walls of the house by stone bears. As a result, the four thermometers were really accurate, and the temperature of almost every thermometer stayed at a value of 12 degrees Celsius. on.

　　 "The temperature in this room is about 12 degrees Celsius!" Shixiong said cheerfully.

　　 Under Shixiong’s explanation, Kuaima and the others have understood the approximate temperature of zero and what temperature is one hundred degrees.

　　 Ishikuma’s wooden house does not have good thermal insulation performance. Although there is a charcoal basin in the house, the temperature is around ten degrees Celsius.

　　 Seeing that the four little things that Master Guardian spent so much effort to make can accurately judge the temperature level, even Lieutenant Ferguson was a little surprised.

　　In this era, even in Europe, thermometers are relatively rare things, and there is no uniform standard for temperature.

At this time, in Europe, there was a Fahrenheit thermometer invented by the Dutchman Wallenheit~lightnovelpub.net~, there were also a column thermometer invented by the Frenchman Lemuel, and a Celsius thermometer invented by the Swedish Celsius. Every country The temperature standards used are different.

　　The four thermometers made by Shixiong are all Celsius thermometers. The previous Huaxia used the Celsius standard, so Shixiong will naturally make thermometers in accordance with the Celsius standard.

　　 "Master Guardian, can we make wine with these four thermometers?" The rabbit licked his hare lips and asked cautiously.

　　 "Haha, why, even you little guy wants to drink too?" Shixiong teased.

　　 "Well, I drank some of the wine you gave me last time. It's delicious." Rabbit mouth smiled.

Bone kicked the rabbit’s mouth, and said angrily: "You are ashamed to say the last time you drank, the last time the guardian gave us the wine, you got drunk after two sips, and you talked nonsense and drunk crazy. , You fellow can't drink anymore!"

　　 The rabbit mouth laughed and although he didn't refute it, the expression on his face made it very clear-don't let me drink? No way!

Shixiong smiled and said: "Yes, with this thing, we can make koji. Once the koji is made, then you can start making wine. But it will take a month or two. Rabbit mouth, you just want to drink now. Can't drink it."

　　 Rabbit Mouth asked in surprise: "Master Guardian, you mean I can drink?"

　　 Shixiong happily said, "Why not? As the saying goes, men don’t drink, and they are in vain to walk in the world. Your kid is a little man anyhow, why can’t you drink?"

"awesome......"

　　PS: Bow to thank "Book Friends 20190716010427669" 100 for the reward.