How was television invented?

Introduction How was television invented? In the 1920s, an American writer named Hugo Gernsback predicted in his science fiction novel: In more than 700 years,

How was television invented?

In the 1920s, an American writer named Hugo Gernsback predicted in his science fiction novel that in more than 700 years, people will be able to sit at home and watch performances 6 kilometers away at the Theater National. His prediction represented the wish of many people at that time. By this time, the telegraph and telephone had been invented in the world, and photography had also developed significantly. So naturally someone thought of designing a machine that would use electricity to transmit images of objects with the flip of a switch. being able to display what we need.

However, because this idea was so magical, it was considered a myth at the time like “The Arabian Nights.” At the time, Hugo Gernsback's prediction was considered bold. However, this writer did not expect that science and technologyModern ie are developing so quickly that it would take 700 years. After only a few decades, reality has far exceeded his imagination. Now, not to mention performances in theaters 6 kilometers from our homes, we can clearly see even human activities on the distant moon from our homes.

How does this myth come true? Our readers will almost unanimously answer: “Through television!” » Yes, so who invented television?

It's Baird.

On October 2, 1925, in a department store in London, England, to cries of "Great, great!", a disheveled and naked man came down the stairs. I saw him grab Taiton, a 15 year old boy, who was in the store and push him upstairs without any explanation.

Taiton was trembling with fear when he faced this crazy person, but this person simply asked him to sit down, then opened a large disk, a drum and a vibrating mirror in front of him.t him. A strange machine made. until. While Taiton was wondering, an even stranger phenomenon appeared: there was a flat surface like a movie screen next to him. With the sound of the machine starting, a human face appeared on the flat surface, with an expression of surprise. When he discovered that it was his own face, Taiton was so shocked that he could not even speak.

This “madman” was the British inventor Baird. The strange machine with the big disk was the world's first mechanical television, and Taiton was the world's first television. The disk was a scanning disk that scanned Tyton and projected its image onto the receiver's flat screen.

The development of science and technology is inherited. Before Baird invented television, people had invented radio transmission technology, facsimile technology, and facsimile technology. The television ist developed on the basis of these technologies, notably the emergence of fax technology, which created the conditions for the birth of television.

The principles of fax technology are not very difficult to understand. As we all know, no matter how complex the content of an image is, it can be broken down into many small black dots. If you use a magnifying glass to look at the photos printed in the newspaper, you will clearly see that the images in the photos are originally composed of small black dots.de. The same goes for faxes. People use the method of dividing an image into hundreds of thousands of small black dots and using electron beams to scan them one by one, like when we read a book, starting at the top left corner. and going word by word. Read word by word, line by line, then convert the scanned information into electrical signals andsend them. Once the receiver has received the electrical signal, it outputs it to the corresponding small black dots and the original image is obtained.

So, can a similar principle be used to transmit moving images? In 1923, Baird began working on this invention.

It has certain advantages for this job. Baird had a strong interest in science since he was a child, and he loved playing with technology since he was a child. He once made a telephone exchange alone to communicate with friends, he also installed a small generator in his house and used it. tap water in the kitchen to operate a water wheel. Charging the battery. In 1906, the 26-year-old Baird entered the Royal Institute of Technology to study electronic engineering, particularly extensive research into the principles of selenium photoelectricity, which laid a solid foundation for his research.are on television. Additionally, at that time, with improved high-frequency circuits and photoelectric tubes, people were able to transmit graphic telegrams and photos by fax relatively clearly. There are also people who started researching television and gained some experience, which also served as the basis for Baird's invention.

However, Baird also has a near-fatal disadvantage: poverty. He had no funds or sponsors, so he had to do it himself and started inventing and researching in primitive conditions that are incredible for today's people. Thus, a sink frame in the simple dormitory where he lived became the basic element of his experimental equipment; it was connected to an old tea box, and on top of the box was a machine picked up from the trash pile behind the appliance store. An electric motor forre turn the "scan disk" with a small spiral hole made from an old hat box lid. These small holes are used to divide the scene into many small black dots with different levels of light and dark and emit them.

Additionally, there is a simply made projection lamp in an old cookie tin, several lenses purchased from a bicycle shop, parts removed from a discarded telegraph, etc. These old and disordered objects, linked together by dense threads, became Baird's experimental device.

Do not underestimate this device, which looks like a pile of scrap metal, Baird used it to successfully transmit the image of a crossed flower using wires in the spring of 1924. Although the emission distance is only 3 meters, the image flickers and only a rough outline can be seen. But after all, this is the first physical image emitted by hhumans through television technology.

The real success came more than a year later. On the day mentioned at the beginning of this article, Baird completed a modification of his installation in his residence above the department store. During the test, he was so excited that he shivered with excitement: on the receiver, the head and facial features of the puppet "Bill" as the throwing target were clearly displayed, and even the eyelashes were visible! “Great, find a live Bill soon!” De jumped up, ran down the stairs and acted out the scene I just mentioned.

Almost at the same time, the American scientist James also made significant progress in television research. In May 1926, James experimented with radio transmission of images of moving windmills in suburban Washington. People 10 kilometers away miraculously saw the image of the windmill spinning slowly.t on television receivers. Shortly after, James used television to broadcast the event, which was also successful. On November 2, 1936, the British Broadcasting Corporation used Baird's mechanical television system and radio transmission to officially open the world's first television station in London.

Television, this beautiful myth which was once so far from us, has finally become reality.

  • Popular Focus
  • Where is the cheapest battery wholesale?

    Where is the cheapest battery wholesale in Tangxia, Sanyuanli, Baiyun District? There is an enterprise specializing in the independent production of electric vehicles in Tangxia, Sanyuanli, Baiyun District, Baiyun Sanyuanli Avenue, Baiyun Sanyuanli Street
    08-02
  • Four 3.7V lithium batteries in series and parallel produce 7.4V/4.4A. How to reduce it to 4.8V/4.4A?

    Four 3.7V lithium batteries in series and parallel produce 7.4V/4.4A. I personally think it is impossible to reduce it to 4.8V/4.4A. Because the discharge platform of lithium batteries is generally set
    08-10
  • What are the materials of the negative electrodes of lithium batteries?

    What are the materials of the negative electrodes of lithium batteries? The main commercial applications of lithium batteries include graphite, which is a sheet of copper used to guide current and which does not react. another safe
    08-02
  • The difference between 18500 and 26500 batteries

    What is the difference between 18500 and 26500 batteries? The answer above is 18650. The person asking the question should ask what is the difference between 18505 and 26500 batteries. In the case of Fuant ER1
    08-02
  • What does 3.7V 80mAh written on a lithium battery mean?

    What does 3.7V 80mAh written on a lithium battery mean? 3.7 V, 80 mA = 0.08 A, H means 1 hour, or 3600 seconds. Taken together, it is
    08-02
  • How long does a lithium battery (cell phone battery) last?

    How long does a lithium battery (cell phone battery) last? The lifespan of mobile phone batteries, under normal conditions of use and without serious impact, the lifespan set by the manufacturer must be 5 years.
    08-02
  • Will lithium batteries explode when charging?

    Will lithium batteries explode when charged? Will lithium batteries explode when charged? Lithium battery explosions usually occur during the charging process, because the negative electrode material of lithium batteries is graphite or other carbon materi
    08-02
  • Parameters of lgdas31865 lithium battery

    Parameters of lgdas31865 lithium battery The parameters of lgdas31865 lithium battery are as follows: LGDAS31865 is a model 18650 lithium battery with a capacity of
    08-02
  • What are the main components of lithium battery electrolyte?

    What are the main components of lithium battery electrolyte? The composition of lithium battery electrolyte is shown below. 1. Ethylene carbonate: molecular formula C3H4O3. Colorless transparent liquid (>35℃), room temperature
    08-02
  • Who are the lithium battery manufacturers in Shandong?

    What are the lithium battery manufacturers in Shandong? Shandong Shengyang Power Supply Co., Ltd. and Shandong Weineng Environmental Protection Power Technology Co., Ltd. 1. Shandong Shengyang Power Supply Co., Ltd. is located in Shengyang, Qufu City.
    08-02
  • Types of drone batteries available in 2024

    Part 1. Types of drone batteries available in 2024In 2024, drone batteries have advanced significantly, offering a range of options to cater to various needs in
    07-30
  • How long does it take to charge 26650 battery?

    How long does it take to charge a 26650 battery? The charging time for a 26650 battery is generally between 3 and 6 hours, but the precise time depends on the power of the charger and the capacity of the battery. in general
    08-02
  • For what?Sure, here's an article based on the phrase "For what?

    The simple yet profound question, "For what?" often serves as a gateway to deeper reflections on purpose and intention. It is a query that invites us to delve into the reasons behind actions, decisions, and circumstances that shape our lives and the wor
    08-02
  • Choosing the Right Cart Battery

    This comprehensive guide will walk you through everything you need about cart batteries, from understanding different types to making an informed purchase decision.
    08-02
  • 30mAh~500mAh 3.7 V Li-ion Battery

    Welcome to Ufine's collection of 3.7V lithium-ion batteries ranging from 30mAh to 500mAh. Explore a diverse range of compact and lightweight batteries suitable for various electronic devices,
    08-02
  • Here are 10 essential facts about drone batteries for 2024.

    10 Key Facts About Drone Battery for 2024 In 2024, drone batteries have advanced significantly, offering a range of options to cater to various needs in the consumer, commercial, and industrial sectors. Below are the primary types of drone batteries avai
    08-02
  • Could you please explain the difference among IMR, ICR, INR, and IFR 18650 batteries?

    What is the Difference Between IMR, ICR, INR, and IFR 18650 Battery?In 18650 batteries, discerning the differences among IMR, ICR, INR, and IFR types is fundamental for tailored and efficient battery usage. These distinct
    08-02
  • Safety considerations for cart batteries

    Selecting the ideal cart battery is crucial for ensuring optimal performance and longevity of your electric vehicle or vaping device. This comprehensive guide w
    08-01