Since ancient times, man has sought to explore the world around him. Scientists, philosophers and writers were motivated by a desire to learn the secrets of the universe and uncover the mysteries of nature. With the development of technology, it has become possible to carry out large-scale scientific research that has expanded the understanding of our planet and opened up many new opportunities for humanity.
In the age of universal computerization, one can easily access information of interest. However, often a large amount of knowledge leads to the fact that in the shadow of basic scientific research little-known facts remain that are important for broadening one's horizons. The following are interesting data obtained from various fields of science.
The unique course of evolution
The origin of our species is one of the main mysteries that science has yet to solve. The following are facts little known to the general public:
- A person learned to speak due to the fact that about 350 thousand years ago, his larynx, containing the vocal apparatus, sank in his throat.
- Scientists have proven that in primates, an increase in brain size is accompanied by an increase in teeth. The only exception is a person who does not observe this pattern.
- One of the negative consequences of a change in the pelvic bones that allowed our ancestors to walk vertically was that the lower back became more vulnerable to pain and injury.
- Little-known facts about a man who lived in a primitive era, serve as the basis for modern research. So, it was proved that the unique long-distance throwing skills of stones and sharpened spears allowed our ancestors to successfully hunt and get food for food. Eating protein-rich meat stimulated the development of the body and brain. This information is essential for modern medicine.
- Humans burn about 50% fewer calories than most other mammals. Slow metabolism determines the long life span of our species, unlike, for example, hamsters, dogs and cats.
Little-known historical facts
The past is rich in amazing events. Knowledge of this information will expand the understanding of history.
The whole world admires the politician Julius Caesar. He became famous for his aggressive campaigns, during which he was able to significantly expand the borders of his empire. However, few people know that the conquest of the African continent by the army of Julius Caesar was accompanied by difficulties, one of which was helped by the inventiveness of an outstanding commander. When Caesar left the ship off the African coast, he stumbled and fell, which his superstitious warriors regarded as a sign of fate: they say, the conquest will not be successful. But the commander was not at a loss and, seizing a handful of sand, loudly said: "I am holding you in my arms, Africa." As a result of hostilities, Julia Caesar triumphantly took Egypt.
Few people know about such a little-known fact as the free sale of weapons in the Russian Empire. Until 1917, a special certificate and license were not required to purchase it. Anyone could get a firearm or melee weapon.
According to historians, from the 17th to the beginning of the 20th century, Russia was one of the most non-drinking countries on the European continent.
An interesting fact from the life of people living in the Russian Empire. In pre-revolutionary Russia, religion played a big role in human life, so for Orthodox the name day was a more important holiday than a birthday.
Psychological processes
Little-known interesting facts from psychology allow us to learn about the peculiarities of human thinking, the principle of which has not yet been fully studied by scientists:
- When red and blue are next to each other, it causes eye fatigue and irritation. Therefore, a person hard perceives the combination of these two shades.
- People see things differently than consciousness perceives them. It is proved that the human brain does not read every letter, but a word with a whole. The main thing is that the first and last letters in the words are correctly located.
- A person spends on dreams up to 30% of his time. According to scientists, people who like to fantasize are more inventive and better at solving difficult tasks.
- It is generally accepted that we carefully think through and control all actions in life. In fact, everyday decisions help us to make the subconscious.
Interesting facts from the world of medicine
Without this constantly evolving science, the very existence of man and the normal development of his body would be impossible. The following are interesting information from the field of medical theory and practice:
- The lowest body temperature was recorded in a two-year-old girl, Carly Kozolofsky, who spent several hours in the cold. The body temperature of the child dropped to 14.2 degrees.
- The fact that in 1882 cocaine was used in Europe as an effective cure for insomnia, colds and headaches is little known.
- It is proved that not a single person in the world can sneeze with open eyes.
- During the conversation, 72 muscles are involved.
- The heaviest internal organ in the body is the liver. It weighs approximately 1.5 kilograms.
Entertaining physics
Many little-known facts allow us to take a fresh look at the complex processes occurring in nature:
- The temperature of lightning can reach up to 25,000 ° C, which is five times higher than the temperature recorded on the surface of the Sun.
- In nature, there are no two snowflakes with the same pattern.
- The tip of the whip moves faster than the speed of sound, which is why you can clearly hear the click that is heard when the wave.
- The beams of the Eiffel Tower are heated and expanded in hot weather, so the height of the building can vary by 12 centimeters.
- Light propagates more slowly in a transparent medium than in a vacuum.
Riddles of terrestrial fauna
Little-known facts from the life of animals:
- The loudest sounds among all living creatures are made by humpback whales. They can be heard at a distance of up to 800 kilometers.
- Scientists nicknamed the Turritopsis jellyfish immortal because of its ability to rejuvenate itself through the regeneration of body cells.
- Bats are the only ones among mammals that can fly.
- The tarantula is able to live without food for more than two years, and snails can sleep without food and water for three years.
- Different types of zebras live in nature, each of which differs in the number and arrangement of black stripes on the body of the animal.
This is only a small part of little-known facts about our amazing planet. Every day, scientists make new discoveries that expand human knowledge of the world.