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Wander Lord

Interesting on art, nature, people, history

Category Archive: It’s interesting

Interesting facts about wonderful silk

Interesting facts about wonderful silk

Interesting facts about wonderful silk


Silk is one of the most valuable and beautiful fabrics. It was highly appreciated a millennium ago, and our contemporaries are fond of it. You know, it is produced from threads extracted from the cocoon of silkworm. The length of one such thread from one cocoon can reach 800-100 meters!
Silkworms are actually caterpillars, not worms. They build cocoons to protect themselves while they change into a moth.
By the way, some spiders also make silk. They weave silk webs to catch insects. However, the silk made by spiders is too thin for making cloth.
To process silk, the cocoons are first put in hot water. This softens the cocoons so the silk can be unwound.
Silk was such an important product during ancient times that the major trade route between East Asia, West Asia, and Europe was called the Silk Roads.

Interesting facts
1. The production of 500 grams of silk requires about 3 thousand cocoons of silkworm. It takes 12 hours of work to make a skein of silk thread weighing 250 grams.
2. Silk thread has tremendous strength, it withstands strong pressure and is very strong at breaking. Not so long ago it was found out that 16 layers of silk withstand a bullet from the Magnum 357 (with a lead core).
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Great Barrier Reef – Island of Reefs

Great Barrier Reef - Island of Reefs

Great Barrier Reef – Island of Reefs


The Great Barrier Reef is one of the great natural wonders of the world, the largest coral reef on Earth. It is a system of many individual reefs and small islands. Altogether there are 2,900 individual reefs. It lies in the Pacific Ocean off the coast of Queensland in northeastern Australia. From north to south its length is more than 2,000 kilometers.
The Great Barrier Reef was formed over millions of years from mounds of coral. There are at least 300 types of hard coral. The corals died but their shells remained, and other corals grew on top of it. Over those millions of years, the corals cemented together and were covered with underwater plants, debris from the ocean. Most of the reefs are under water (bare during low tides).
The sea life of the reef is extraordinary. And there are more than 1,500 species of saltwater fish. Besides the 400 types of coral, there are anemones, sponges, snails, worms, lobsters, prawns, jellyfish, crayfish, giant clams, and dugongs.
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Interesting about Cosmetics

Interesting about Cosmetics

Interesting about Cosmetics


Cosmetics are products that people put on their bodies to make themselves feel more beautiful. There are many types of cosmetics, including face makeup, nail polish, lotions, perfumes, and shampoos. Cosmetics were also used in ancient times. Today millions of people throughout the world use cosmetics every day.
Ancient Egyptians were the first people known to use cosmetics. Egyptian men and women used perfumed oils to keep their skin from drying out. They also used natural coloring on their eyelids and eyelashes. The Romans later introduced more types of cosmetics.
Historians argue that the first lipstick appeared 12 thousand years ago. It could be juice of berries, mush made from plants or bark of trees. The first documentary evidence of the use of lipstick was found in the chronicles of Ancient Babylon. The Mesopotamian nobles used a creamy substance made from crushed semiprecious stones and minerals.
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Wonderful Earth

Wonderful Earth

Wonderful Earth


People are constantly interested in everything mysterious. That is why they explore the amazing planet Earth. It seems that mankind knows almost everything about the planet, but there are still many topical issues that need answers. In the distant future, mankind will unravel the riddle of the Universe and the origin of the Earth. Here are interesting facts about our wonderful planet.
Large liquid-water oceans cover the majority of the planet’s surface, such that the total amount of dry land is about equal to the surface area of Mars.
Like Mercury, Venus, and Mars, Earth has no ring system, but it has a large satellite, the Moon.
The length of the day is equal to 24 hours or 1440 minutes or 86,400 seconds.
Earth’s weather turns out to be the most unpredictable in the solar system.
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Paper – useful material

Paper - useful material

Paper – useful material


People use paper for writing, printing, wrapping, and many other purposes. Hundreds of years ago people made paper by hand. Today machines produce most paper. First, the wood fibers are soaked in water and creates a soupy mixture. Next, this mixture is spread on a screen and rollers press out water. Once the fibers are dry, they have become a sheet of paper.
Paper is available in a wide variety of weights, colors, textures, and finishes for a multitude of purposes. Everyday writing and printer paper is thin and smooth. Paper used for arts and crafts is thicker and textured. Cardboard is a thick type of paper used to make packaging. Paper used for newspapers is thin and cheap. Recycled paper is made from used paper.
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Power of Fire

Power of Fire

Power of Fire


Civilization would not be possible without fire. Human beings have known how to control fire for almost 1.5 million years. But for many thousands of years after that, people still found it difficult to start a fire. One method they used was to strike one hard mineral against another to make sparks. A second method was to twirl one piece of wood against another until the wood heated up to its ignition point.
Fire is very useful. Campfires kept people warm and scared off wild animals. Fire lit the way at night and also cooked food. Later people set fires to clear land for farming. They used fire to make pottery from clay, to shape metals. Fire is used in many factories to operate furnaces or heat boilers. In a steel mill it is used to melt the materials that go into making steel.
However, fire is dangerous. It always must be used very carefully.
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Theory of Black Holes

Theory of Black Holes

Theory of Black Holes


A black hole is an area in space with an incredibly strong gravity. This gravity pulls in everything that gets close and nothing can escape from a black hole. Black holes have great amounts of material packed in very tightly. That’s why they are remarkably heavy for their size. They are called “black” because they are invisible. Because no one can see black holes, they are hard to find.
A black hole can be formed when a huge star uses up its fuel. The gravity crushes the star smaller and smaller, and it becomes a black hole. Scientists believe that a huge black hole lies at the center of nearly every galaxy.
The German astronomer Karl Schwarzschild predicted the existence of collapsed stellar bodies that would not emit any radiation. Such cosmic bodies were named black holes about 50 years later.
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