Who invented television? Who invented the mobile phone? Who invented the refrigerator?

Television sets were invented independently by Ferro Farnsworth, Veratimir Sforrogin, and Baird, but there is a difference between the televisions invented by the trio, Baird (his full name is John Logie Baird) whose television is a mechanically scanned television, and Ferro Farnsworth and Veratimir Sforrogin's television which is an electronic television. The image of a puppet "scanned" by Scotsman John Logie Baird on October 2, 1925, during an experiment in London, is often seen as the mark of the birth of television, and he is known as the "father of television".

The mobile phone was first invented by the Soviet engineer Kupriyanovich in 1957, and in 1958, the Voronezh Scientific Research Institute of Communications of the Soviet Union began to develop the world's first fully automatic mobile communication system "Altai" ( In 1963, the "Altai" system was tested in Moscow, and since the end of 1969, the "Altai" system has officially provided mobile services in more than 30 cities in the Soviet Union.

The refrigerator was designed and manufactured in 1918 by E.J. Coberland, an engineer from Carl Wienert in the United States. In 1834, American engineer Jacob Perkins invented the world's first compression refrigeration device, which was the prototype of the modern compression refrigeration system. In the same year, Perkins received the first patent for a freezer in the United Kingdom.

Television was invented by Belder.

The world's first refrigerator was born in 1918 and was designed and manufactured by E.J. Coberland, an engineer from Carl Wienert in the United States.

In 1834, American engineer Jacob Perkins invented the world's first compression refrigeration device, which was the prototype of the modern compression refrigeration system. In the same year, Perkins received the first patent for a freezer in the United Kingdom.

In 1910, the world's first household refrigerator with compression refrigeration was introduced in the United States.

In 1913, Chicago, USA, developed the world's first household refrigerator. The refrigerator shell, called Dumer, was made of wood and had a compression refrigeration system installed inside, but it did not work very well.

In ancient China, people invented the method of food preservation and preservation. In the Book of Songs, there is a record of slaves digging ice in winter for the nobles to drink in summer. The ancient book "Zhou Li" records that "the sacrifice is a total of ice".

"Jian" is actually a box, put ice in it, and then put the food in the middle of the ice, which plays a role in preserving the food. It can be seen that Jian is the ancestor of refrigerators in China. In 1978, the tomb of Zeng Hou Yichu in Suixian County, Hubei Province unearthed a "copper ice jian".

It is a double-layered vessel with a pot inside the fangjian. In summer, ice can be filled between the wall of the pot and the kettle, and the wine can be filled in the pot, and the ice can make the wine cold. It can be said that the copper ice is the earliest refrigerator found in the world so far.

At the end of the 19th century, Jacobi Perkins, an American working in England, made a new discovery that led to the invention of the refrigerator. In 1834 he discovered that when certain liquids evaporate, there is a cooling effect. Perkins asked a group of mechanics to build a working model that would prove the idea.

Soon, household refrigerators became smaller and easier to access in the kitchen. Sure enough, the device did produce some ice one night. Excitedly holding the ice, the mechanics jumped into a wagon and sped to Perkins' house to show him what had been achieved.

One of the most important uses of refrigerators is on ships. Large cold storage meant that ships were able to carry fresh meat over long voyages, such as lamb that could be exported from New Zealand to Europe, and Perkins was old enough to have his own inventions on the market. ** The inventor of the man living in Australia was a Scottish printer — John Harrison.

It is likely that Harrison discovered the cooling effect without knowing the results of Perkins. He used ether to clean the metal to print the lead lettering, and one day he noticed the cooling effect of the substance. By 1862, his first refrigerators were on the market.

Harrison also set up the first refrigeration hall at a brewery in Bendigo, Victoria. German engineer Carl von Lind built the first household refrigerator in 1879.

A2: The refrigerator was invented by Platen and the Tower. Four thousand years ago, people in Mesopotamia knew that meat was stored in caves filled with ice.

Around 1850, the first home freezer introduced in the United States also used natural ice cubes, which did not achieve the freezing effect. The first refrigerator was invented and built in 1923 by Praden and the Flame Tower of Sweden. The first refrigerator to use fluorochlorine gas as a freezing agent was invented in the United States in 1930.

1930 In the 1940s, refrigerators with refrigerators were the first homes in the United States. With the gradual improvement of living standards, refrigerators have become quite common electrical appliances.

In 1834, American engineer Jacob.

1918, United States