Menu English Ukrainian russian Home

Free technical library for hobbyists and professionals Free technical library


BIG ENCYCLOPEDIA FOR CHILDREN AND ADULTS
Free library / Directory / Big encyclopedia for children and adults

Why do people collect postage stamps? Detailed answer

Big encyclopedia for children and adults

Directory / Big encyclopedia. Questions for quiz and self-education

Comments on the article Comments on the article

Did you know?

Why do people collect postage stamps?

Philately or collecting stamps has been a favorite hobby of millions of people for over a hundred years. It has become so popular that in many countries a significant number of stamps and other postage signs are issued already stamped, that is, unusable. They are meant specifically for collectors! Of course, others collect stamps in order to extract some benefit from them.

However, this requires a great deal of knowledge. Many such "collectors" quickly burn out, because they have no idea about the true value of this or that postal sign. They often think that it is determined only by the time of release of the brand. Or when they see a strange, unusual stamp, they believe that a rare, and therefore, especially valuable specimen has fallen into their hands.

However, most people collect stamps solely for their own pleasure. Some collectors go to extremes and, wanting to get this or that stamp, are ready to pay huge sums of money for it. Naturally, the rarest stamps are the most valuable, but their rarity depends not only on the date of issue. A very typical confirmation of this is the following story.

In 1861, the postal service of the English colonies in South Africa discovered that old stocks of postage stamps had run out and new arrivals were not expected in the near future. Then they entered into an agreement with a small company, which undertook to print stamps until the interruptions in their supply stopped. This situation, however, did not last long, and therefore few new stamps were printed. In addition, the company's employees made a mistake by confusing colors, brands of different values. They printed 1p stamps in blue and 4p stamps in red, when they should have done the opposite!

Later, this story became widely known, and these "wrong" stamps are now a rarity, and each of the surviving copies is now worth a fortune. There are examples of another kind, when certain brands became rare by no means by accident. A well-known businessman in 1870 deliberately bought up and destroyed a huge number of certain postage stamps. Today, the surviving ones are worth several times more than other stamps produced at the same time.

Author: Likum A.

 Random interesting fact from the Great Encyclopedia:

Is there enough drinking water on the planet?

Although over 70% of the planet's surface is covered with water, fresh water suitable for drinking makes up only 3% of all water resources. Two-thirds of the Arctic and Antarctic ice is made up of drinking water, but only about 12 km3 available for use.

Considering that water consumption has tripled over the past 40 years, and water purification by industrial enterprises has not improved, by about 2025 water consumption in many countries, including in Central Europe, may become limited.

 Test your knowledge! Did you know...

▪ Did people ever speak Latin?

▪ What is avant-garde?

▪ What amphibians can hear with their lungs?

See other articles Section Big encyclopedia. Questions for quiz and self-education.

Read and write useful comments on this article.

<< Back

Latest news of science and technology, new electronics:

Machine for thinning flowers in gardens 02.05.2024

In modern agriculture, technological progress is developing aimed at increasing the efficiency of plant care processes. The innovative Florix flower thinning machine was presented in Italy, designed to optimize the harvesting stage. This tool is equipped with mobile arms, allowing it to be easily adapted to the needs of the garden. The operator can adjust the speed of the thin wires by controlling them from the tractor cab using a joystick. This approach significantly increases the efficiency of the flower thinning process, providing the possibility of individual adjustment to the specific conditions of the garden, as well as the variety and type of fruit grown in it. After testing the Florix machine for two years on various types of fruit, the results were very encouraging. Farmers such as Filiberto Montanari, who has used a Florix machine for several years, have reported a significant reduction in the time and labor required to thin flowers. ... >>

Advanced Infrared Microscope 02.05.2024

Microscopes play an important role in scientific research, allowing scientists to delve into structures and processes invisible to the eye. However, various microscopy methods have their limitations, and among them was the limitation of resolution when using the infrared range. But the latest achievements of Japanese researchers from the University of Tokyo open up new prospects for studying the microworld. Scientists from the University of Tokyo have unveiled a new microscope that will revolutionize the capabilities of infrared microscopy. This advanced instrument allows you to see the internal structures of living bacteria with amazing clarity on the nanometer scale. Typically, mid-infrared microscopes are limited by low resolution, but the latest development from Japanese researchers overcomes these limitations. According to scientists, the developed microscope allows creating images with a resolution of up to 120 nanometers, which is 30 times higher than the resolution of traditional microscopes. ... >>

Air trap for insects 01.05.2024

Agriculture is one of the key sectors of the economy, and pest control is an integral part of this process. A team of scientists from the Indian Council of Agricultural Research-Central Potato Research Institute (ICAR-CPRI), Shimla, has come up with an innovative solution to this problem - a wind-powered insect air trap. This device addresses the shortcomings of traditional pest control methods by providing real-time insect population data. The trap is powered entirely by wind energy, making it an environmentally friendly solution that requires no power. Its unique design allows monitoring of both harmful and beneficial insects, providing a complete overview of the population in any agricultural area. “By assessing target pests at the right time, we can take necessary measures to control both pests and diseases,” says Kapil ... >>

Random news from the Archive

Mercedes-Benz luxury hybrid 20.09.2014

Mercedes-Benz has unveiled the first luxury hybrid vehicle in its lineup. The German automaker does not intend to stop there and promises to release several hybrids at once, with the ability to recharge batteries from the home electrical network.

The Mercedes S550 Plug-in Hybrid is said to be the first luxury sedan on the market to combine the power of a V8 engine with the economy of a compact model. The novelty has a hybrid V6 engine with a total capacity of 436 hp, which allows the car to accelerate from 0 to 100 km/h in 5,2 seconds.

The hybrid modification of the flagship S-Class sedan of the new generation is equipped with an 85-kilowatt electric unit and a set of lithium-ion batteries with a capacity of 8,7 kWh, which are charged from a 230-volt household network in 4 hours. Charging takes half the time when you connect a compatible charger to a dedicated 400-volt outlet.

Mercedes-Benz is currently testing a wireless charging system that the company is developing with BMW. The device will allow owners of hybrids and electric vehicles to charge batteries without the use of wires.

The German developers paid special attention to the efficiency of the S550 Plug-in Hybrid, although the car is able to drive a little more than 30 km on electric traction. The 7-speed automatic transmission is closely linked to electronic systems that evaluate the traffic situation. The box settings change automatically based on the current location and speed of cars moving nearby.

The gas pedal in the premium sedan is complemented by tactile feedback. When there is an opportunity to save fuel (for example, on a slope), by removing the foot from the accelerator or loosening its pressure on it, the driver will feel the vibration impulses that the "smart" system will apply to the pedal. In the same way, the person behind the wheel will be notified when the internal combustion engine is switched off for electric motor driving.

The start of sales of the Mercedes S550 Plug-in Hybrid is expected in 2015. According to preliminary data, the cost of the car will exceed $100.

Other interesting news:

▪ Memory cards with backup function

▪ Asphalt cleans the air

▪ Sony Mocopi sensors for avatar motion animation

▪ 32Gbps transceiver from Altera

▪ AI based radio station

News feed of science and technology, new electronics

 

Interesting materials of the Free Technical Library:

▪ section of the site Calls and audio simulators. Article selection

▪ article Dark kingdom. Popular expression

▪ article What are antibiotics? Detailed answer

▪ article Program director of the radio station. Job description

▪ article Energy converters (inverters) for a solar battery or a wind generator. Encyclopedia of radio electronics and electrical engineering

▪ article Low Noise Triac Power Regulator. Encyclopedia of radio electronics and electrical engineering

Leave your comment on this article:

Name:


Email (optional):


A comment:





All languages ​​of this page

Home page | Library | Articles | Website map | Site Reviews

www.diagram.com.ua

www.diagram.com.ua
2000-2024