Stories about inventions and creations

Copier

At first, the paraffin paper invented by Edison was only widely used in food and candy packaging materials. Later, he tried to carve the outline of characters on the wax paper to form a paraffin paper. For engraving paper, put white paper under the paper, and then use an ink roller to roll the ink from the engraving paraffin paper. A wonderful thing happened, and clear writing appeared on the white paper. After many improvements and experiments, in 1976, Edison began mass production of the copier he invented. All of a sudden, agencies, schools, institutions, and groups all used this wax paper mimeograph machine. Due to the popularity of Edison's copiers and their popularity around the world, Edison deeply realized that he should invent something that people generally and deeply need.

Synchronous transmitter

Early telegraphs could only transmit one message at a time and could not exchange signals at the same time. Since Edison himself was a telegraph technician, he set out to improve the traditional transmitter. , created a dual transmitter, and in 1974 developed a quadruple transmitter, also known as a synchronous transmitter. At a time when radio had not yet been developed, the synchronized transmitter was a major breakthrough.

Improved Telephone

We all know that the modern telephone was invented by Bell. In fact, the fact that the telephone can receive and send messages clearly is due to Edison’s experiments again and again. , broke through the traditional stereotypes and created a toner microphone, which improved the sensitivity, volume, and receiving distance of the phone in one fell swoop. Otherwise, we would still often say: Hello! Hello! Can't hear you, can't hear you clearly when making phone calls. .

The birth of the gramophone

One night in December 1877, the staff of the Mengluoyuan Laboratory shivered slightly, not because of the cold, but because they heard the greatest sound in the history of mankind. The first recording: "Ma Li has a little sheep. Its fur is as white as snow. No matter where Ma Li goes, the little sheep is always by her side... This great invention does not need to be introduced by Teacher Xiao Guan. Everyone You can all understand how widely it is used. The French government even awarded Edison the title of Sir! Later, Edison improved the phonograph many times until he changed the drum type to the bakelite turntable type. It has only been two years, but it has been decades of continuous improvement!

The Messenger of Light

In the early 19th century, people began to use gas lamps (gas lamps), but the gas was supplied by pipelines Once the air leaks or is blocked, it is very easy to cause trouble. People are very eager to reform lighting. In fact, Edison set an impossible task for himself: in addition to improving lighting, he also needs to create a power supply system. .

So he and his partners at Mengluoyuan worked tirelessly on more than 1,600 experiments on heat-resistant materials and more than 600 kinds of plant fibers to create the first carbon filament light bulb that could be used at once. It burned for 45 hours. Later, he continued to improve the manufacturing method on this basis, and finally launched a bamboo filament light bulb that can burn for 1,200 hours. American Guest Brothers-Airplane

China Yuan Longping-Hybrid Rice

Russian scientists invented the invisibility cloak

It is reported that Professor Oleg Gadomsky is a well-known professor in the Department of Quantum and Optoelectronics of Ulyanovsk State University in Russia. Over the past many years, Professor Gadomski has been conducting experimental research on gold nanoparticles. Through years of research, Professor Gadomski discovered that as long as an object is covered with a "material" made of gold colloidal particles. The "invisibility cloak" invented by Professor Gadomski takes advantage of the characteristics of light and the principle of light reflection of objects.

Professor Gadomski said: "Currently, we can only make stationary objects invisible, because when the object moves, the radiation frequency of light changes, so we currently cannot make moving objects invisible. However, I believe that scientists will soon It will create a mobile invisibility cloak similar to Harry Potter's magic cloak."

In fact, Professor Gadomski is not the first scientist to achieve success in the field of "artificial invisibility." . In March 2005, two scientists from the University of Pennsylvania, Aru and Inquet, announced that they had invented a theoretical method to make objects "invisible". The research used plasma lasers.

The invention of Russian scientists is similar to the design of American scientists, both are based on the concept of sharply reducing scattered light. Humans can see objects because after light hits the object, the object reflects the light. As long as this process is interrupted, the person cannot see the object.

Professor Gadomski’s “invisibility cloak” invention has applied for a scientific patent. Researchers believe that large objects such as aircraft and spacecraft will be able to "disappear" from radar screens as long as they are coated with this special substance. Hope it helps you