Who invented the pigeon What people invented through the pigeon

Saltpeter was invented through pigeons; Saltpeter is commonly used to make black powder, fuses, glass, matches, pyrotechnics, and is also used as fertilizer (potash, nitrogen fertilizer) and laboratory analysis reagents. It can be prepared by the reaction of sodium nitrate solution with potassium chloride. Saltpeter can be used to prepare malachite green glaze, and can also be used as a pigment for multicolored and pastel.

One of the raw materials for the manufacture of gunpowder.

Packing method: Two layers of plastic bags or one layer of plastic bags, outer sacks, plastic woven bags, latex cloth bags; plastic woven bags (polypropylene three-in-one bag, polyethylene three-in-one bag, polypropylene two-in-one bag, polyethylene two-in-one bag); Ordinary wooden boxes outside screw-mouth glass bottles, plastic bottles or plastic bags; Screw-top glass bottles, iron-capped glass bottles, plastic bottles or ordinary wooden boxes outside metal barrels (cans).

Precautions for transportation: Railway transportation should be in strict accordance with the Ministry of Railways "rules for the transport of dangerous goods" in the dangerous goods assembly table for assembly.

The pigeon has a geomagnetic induction positioning system, and it will not get lost no matter how far it flies, and the application is being studied.

In the 16th century, the English invented saltpeter from the pigeon's poop, which could be processed into ammunition for muskets and cannons, and the king also ordered that the pigeon's feces belonged to the state, and no one had the right to discard or keep it privately. 3,000 years ago, the Egyptians inadvertently poured pigeon's feces into a container and processed it with cotton wool and charcoal ash, resulting in fireworks and explosives, which have since evolved into explosives, black powder, cannons, and mines and other ......

The people of the group invented the air mail service and the ** instrument through the pigeon. The first carrier pigeon airmail service began in 1896 between New Zealand and the Great Barrier Reef. The pigeon's leg has a small and sensitive special structure of feeling, and people imitate a new instrument according to its principle to make the forecast more accurate.

Pigeons, which have been widely bred in various parts of the world, have lived with humans for thousands of years, and archaeologists have found that pigeons came from Iraq in 3000 BC.

The pigeon, also known as the pigeon, is a bird that is good at flying, small and exquisite, with many varieties and many feather colors, and mainly feeds on cereals.

The coat color of the pigeon is the most common among the birds, and there are many varieties, and the feather colors are tile gray, blue, white, black, green, red, flower and other colors.

Scientists invented the electronic pigeon eye by imitating the eye of a pigeon.

Pigeon hole sails are often used for communications, including marine communications, commercial communications, news communications, military communications, civil communications, etc. The ancient Romans knew for a long time that pigeons had an instinct to return home.

During or at the end of a sporting competition, pigeons are usually released to celebrate and announce victory. Fishermen in ancient Egypt often carried pigeons with them every time they went out to sea to catch fish, so as to convey distress signals and fish news.

Humans imitated pigeons and invented electronic pigeon eyes. The eye of the land infiltration pigeon has a strong ability to discriminate, and has the characteristics of distinguishing unidirectional moving objects, and human beings have designed an electronic pigeon eye according to this characteristic, which is a special radar dedicated to border defense and airport vigilance, which plays a role in improving security.

The pigeon's visual system is very developed, with more than 1 million nerve cells, and there are six kinds of neural reflex cells in the retina with different early ridges, which is equivalent to having six different functions, and the pigeon's eye can see all the edges of an object moving in a fixed direction.

The electronic pigeon eye is generally composed of 200 photocells and 175 artificial neurons, and in the work, it can quickly find spots in motion and edges with a certain orientation, and can quickly detect the speed, direction, shape and other characteristics of the object.