The production of the kiln has finally begun!

There are many people and great strength, and more than a dozen primitive people began to produce under the command of Zhao Yunxiang.

Several primitives were in charge of fetching water, and the Alpha tribe was next to the sea and could get seawater from the sea.

There were several primitive people who were responsible for carrying stones, and on the west side of the tribe was a towering stone mountain, most of the stones on the mountain were granite, and there were many gravel scattered at the foot of the mountain.

There are also some primitive people digging loess, and there are several mounds not far from the tribe, and the loess in the mounds is clayey and is a good clay.

"Divine Alpha, according to your guidance, we have prepared a large amount of seawater and loess, as well as a lot of gravel, what should we do next?" Lin Hao acted as the small leader, and he bent down to report to Zhao Yunxiang.

"The next step is to mix seawater with loess to make mud, and try not to be too dry and hard. Zhao Yunxiang thought for a while, "Oh, by the way, find some dry leaves to mix in it, which can play a stabilizing role." ”

Most of the old houses in the countryside are made of yellow mud, mainly because there were no conditions to use stone and red bricks, and mud houses are the mainstream of the countryside.

In order to make the house stable and resistant to rain, many builders mix some wheat crumb into the yellow mud, which can be replaced with dried palm leaves.

Several primitive people found palm leaves, crushed them according to Zhao Yunxiang's instructions, and then mixed them in the loess.

Seawater pours into the loess, and then a large number of dried palm leaf debris is added, and the soil is taking shape under the trampling of a group of primitive people.

"This work efficiency is faster than expected!" Zhao Yunxiang smiled slightly, glanced at the sun, and now the position of the sun is in the southeast direction, and the time is about 9 o'clock.

Simba left, the guy went to the forest, I don't know what to do, for the big lion, Zhao Yunxiang is not worried at all, it is familiar with the environment here.

As for the baboon, it had been following Zhao Yunxiang, and at this moment it was squatting on the branch of a tree, holding a bone and beating on a kernel that it had found out of nowhere.

The kiln will be ready to be made in no time, and a timer will have to be made!

Most people are familiar with clocks and watches, and we now prefer to look at the time on our phones because this time is 100% accurate.

The earliest prototype of a clock was a circle, and the ancient Egyptians discovered that shadows change in length over time.

Zhao Yunxiang was making the most primitive clocks, and he first used a long and a short wooden stick to combine the two to make a compass and draw a circle on the ground.

This circle is half a meter in diameter, which is very formal, after all, it is made of compasses.

Then use a piece of wood as a ruler to divide the circle into quarters, and these four points are equivalent to 12 points, 3 points, 6 points, 9 points......

One rotation of the clock is equivalent to turning 360 degrees, and the 360 degrees are divided into four parts, that is, four 90 degrees, 12 o'clock, 3 o'clock, 6 o'clock, 9 o'clock, which is exactly 90 degrees.

With four points as a baseline, it is not difficult to find other points, 12 o'clock and 6 o'clock form a straight line, 3 o'clock and 9 o'clock form a straight line, and the two straight lines intersect and cut into 4 90 degrees, and the easiest 4 time points are found.

When we look at a clock, we usually always find the exact position of 12 o'clock and 6 o'clock, because of visual habits, these two points are a vertical line.

As for the circle, as long as you adjust it at will, draw two crossed lines and cut the circle, you can get 4 90 degrees.

Immediately afterwards, Zhao Yunxiang drew 1 point and 7 o'clock, 4 o'clock and 10 o'clock, the intersection of the two lines is still 4 90 degrees, these two lines are obviously shorter than the previous two lines, and Zhao Yunxiang also wrote the time point where the line and the circle touch.

Followed by 2 o'clock and 8 o'clock, 5 o'clock and 11 o'clock, and 4 other time points, and so on, Zhao Yunxiang used the simplest circular slitting method to find the exact same time point position as the clock.

Then, there is an arrow in the center of the clock on the ground, and one of the dozen arrows is a little blunt, so it can be used as the watch hand of the clock.

The arrow stands in the center of the clock, and the sun shines down, casting its shadow at 11 o'clock.

This time is disordered, because of the angle, the time absolutely does not correspond to the current time.

However, the shadow is overlaid at 11 o'clock, and after 3600 seconds, the shadow will definitely move to 12 o'clock or 10 o'clock.

Because the production of clocks is made according to the shadow of the sun, after 3600 seconds, the shadow will move 30 degrees, and the clock made by Zhao Yunxiang is to cut a 360-degree circle into 12 equal parts, and each adjacent time point is 30 degrees different!

"Great Alpha, what are you making?" Lin Hao rubbed the ground vigorously, because he had stepped on the yellow mud for a long time, and the soles of his feet were stained with a lot of yellow mud.

The soles of his feet were stained with thick mud, and it was really uncomfortable to walk, Lin Hao habitually rubbed the soles of his feet on the ground, trying to rub off the sticky yellow mud that was attached.

"It's called a clock, and it's also called a timer!" Zhao Yunxiang said, "In order to strictly control the time in the process of firing pottery, I made this purpose. ”

The temperature and time of firing pottery must be strictly controlled, which has a lot to do with the yield of finished pottery.

Of course, the firing requirements of porcelain are even more demanding, requiring the use of plateau soil, and the furnace temperature must reach more than 1200 degrees, which Zhao Yunxiang does not have in these two points alone.

"It's amazing...... Lin Hao's brain is relatively easy, he looked at the cumbersome numbers and complex portrayals on the ground, and suddenly fell into deep thought.

The most primitive timepieces are completely restricted by the weather and must only be used during the day when the sun is present.

"You go and collect some loess and seawater, which is not enough, and besides, look for more firewood, and we will try to make a larger kiln, and in the future, we will burn bricks and iron." "Zhao Yunxiang's ideas are very avant-garde, he is a person who wants to develop civilization.

"Okay!" Lin Hao nodded, and then began to get busy with a group of primitive people.

As for Brother Xiang, he was fiddling with the clock again, and now that the sun was shining on the sticks, the shadow was still very long, and he needed to wait until 12 o'clock at noon.

Because the sun at 12 o'clock hangs overhead, the length of the shadow is almost zero.

It will take a long time to wait until 12 o'clock, at least more than 2 hours, and many things can be done in more than 2 hours.

Zhao Yunxiang is a very diligent person who knows how to use his time, he took out the shell from the back basket and began to smash and crush it with stones.

Shells are natural calcium carbonate, and oyster shells can be crushed to make interior paints.

Of course, Zhao Yunxiang doesn't want to make paint, but to mark!

Ten minutes later, the shells were basically crushed, and Zhao Yunxiang used leaves to pack the shell powder, and then shook the outline of the clock and the watch hand with a layer of white powder.

On the black and yellow earth, there is a white clock printed on it, which looks very eye-catching, and as for the time number, it needs to be re-depicted again, and 12 o'clock must be marked when the shadow of the wooden stick is 0.

Find a dot and sort the rest accordingly!

The clock is OK for the time being, Zhao Yunxiang looked at a group of primitive people not far away, they had already collected a lot of stones and mud.

"Finally I can make a kiln. Zhao Yunxiang walked over slowly, picked up a stone on the ground, and this stone felt heavy in his hand.

"Huh??"

"This stone?".

Zhao Yunxiang frowned, looking at the stone in his hand incredulously, the color was a little dark red, and the smell was a little pungent.

"Is this ......?"