Chapter seven hundred and twenty sixth sudden encounter with polar bears
Bi Fang's mobility was very high. After a short period of repair, he started the "wall" plan.
It's actually very simple, just dig a trench around the wooden house and then sprinkle a mixture of ice and water mixed with sawdust.
Under extreme temperatures, these mixtures freeze into ice almost instantly, quickly forming a wall that becomes unbreakable.
"Ice is a solid object formed by water. People know that thin ice breaks like glass when touched. However, ice is as hard as steel and as strong as concrete. This is something that many people don't know."
"Actually, it's very simple to achieve this goal, just add a little bit of wood chips into it."
"Ice cubes plus sawdust may sound a bit nonsensical at first, but in fact it has a professional name, called Parkerite, which is a type of composite material, just like reinforced cement, which is a composite of cement and steel bars."
The audience didn't know what Pykerite was, but once Bifang mentioned steel and concrete, everyone had a clear idea.
【What kind of pie can compare with cement? 】
The audience did not believe that ice cubes and wood can be as hard as cement?
"If the conditions are right, it is indeed possible." Bi Fang once again said astonishingly.
"Parkerite is a composite material made of sawdust or other pulp with a mass ratio of approximately 14% and ice with a mass ratio of 86%."
"During World War II, the Allied forces mixed wood fiber with water to freeze it. The wood fiber formed a wooden layer that made the ice difficult to melt. This added ice is as strong as steel."
"One inch, that is, 2.5 centimeters thick ice plate can support the weight of 6 people; 10 centimeters thick ice plate can block bullets."
"This kind of ice plate was invented by Jefferson Pike from Central China, so the Allies named this ice compound 'Pike Rite'."
Under Bi Fang's explanation, water friends also understood how awesome this strangely named composite material is, and also learned about its glorious history.
During the two wars, when the Germans continued to sink transport ships, the Allies always wanted to build a ship that could not be destroyed by artillery shells, bombs and mines. "Pikerit" became an ideal material for shipbuilding.
Later, the Allied forces used "Pikerite" as a material to build a small transport ship that was 60 feet long and 30 feet wide. It could sail on water with a water temperature of 60 degrees Fahrenheit for several days without melting.
That's 60 degrees Fahrenheit, which is equivalent to 15 degrees Celsius, which is basically the water temperature during spring and summer. It can actually last for several days under such conditions, which is outrageous.
After the end of World War II, the "Pikerit" ship was not continued to be built, but it was also used as an anti-tank obstacle. This was often seen in Soviet military textbooks published in the 1940s.
During World War II, China also launched the Habakkuk Project, a plan to build an aircraft carrier to deal with German submarines in the Atlantic.
However, when the experimental ship was being built in Canada, it was discovered that the composite ice material could not support its own weight on the large hull. In addition, there were differences in the design of the power part. The construction plan was suspended in 1943. However, even so, the abandoned hull was not used until the third year of the war.
It wasn't until years later that it completely melted.
Of course, such behavior still seems ridiculous now, but a hundred years ago, someone did try it.
Hearing is false and seeing is belief, Bi Fang raised the stone hammer in his hand and smashed it directly against the solidified wall. With a muffled sound, some broken ice fell from the surface, but the wall was intact.
【I rub it, bullfrog】
【Looking hard】
The fence was made very quickly. In just two days, Bifang surrounded the entire wooden house, reaching a height of 1.6 meters.
At such a height, polar bears can only climb if they want to come over. Wolves can jump, but it is enough to block their charge and carry out a certain degree of counterattack.
All in all, it's a sense of security.
Another week passed and the wolves did not come back. Bi Fang finally gave up and continued to ride the dog sled all over Greenland to see if there were any prey or to enjoy the Arctic scenery.
Feeling the violent beating of salmon, tracking the majestic migration of reindeer, and meeting various animals and environments that are impossible to understand in the city, it satisfies all the audience's yearning for Greenland.
Days like this lasted until late December.
At this time, even Bi Fang himself didn't quite remember how many days he had survived. It might have been more than sixty days, or it might have been more than seventy days. In short, it was probably the last month until the end of survival. Maybe it was the end.
Before surviving, you can encounter the scene where the sun rises again.
In this case, Bi Fang finally encountered another heavyweight predator in Greenland - the polar bear.
Maybe it can't be said that we finally met. Bi Fang had met him several times before, but they only looked at each other from a distance, and never met him so close like today.
"What a coincidence."
Bi Fang's whole body was stiff. He didn't dare to move at this moment because there was a huge creature lying more than 20 meters in front of him.
At first glance, you may think it is a small hill made of dry snow, but everyone sees the big head under the hill.
This is a chance encounter.
Bi Fang's initial target was an Arctic hare. Unexpectedly, something unexpected happened later. An Arctic fox suddenly appeared and scared away the rabbit.
Arctic foxes were just Arctic foxes, and Bi Fang didn't mind. He followed and ended up right behind the polar bear. When he discovered it, the distance between them was only about twenty meters.
One person and one bear are almost staring at each other.
This bear is not the scrawny one in the animal welfare organization’s photos. On the contrary, it is an out-and-out strong man.
Since he was lying on the ground, Bifang couldn't tell how long this guy was, but judging from the height, it weighed at least 500 kilograms!
The only good news is probably that the Six Idiots did not follow Duo Lai. Their hunting ability is limited, and bringing them with them will only scare away the prey. Bi Fang tied them behind an ice hill not far away, so there is no need to worry about being attacked by bears when they arrive.
Eat.
In summer, when food is plentiful, the Arctic fox stores some of its food in its den.
In winter, when the food stored in the den is exhausted, the white fox will follow the polar bear and pick up the leftovers.
Therefore, in winter, there are always 2 to 3 white foxes quietly stalking behind polar bears. Of course, if the polar bear is very hungry, it will also attack the arctic fox.
Bi Fang suspected that he had encountered such a situation.
The color of the polar bear is almost the same as that of snow. It is easy to be ignored if you don't look carefully at night. Bi Fang himself also fell into the trap unknowingly. If he hadn't suddenly woken up, he might have gotten closer.
My thoughts were like lightning, the polar bear was moving!