Tihomir Čuljak
The vast majority of ships will sink if they are overturned by the waves, or if an opening is formed in the hull of the ship through which water suddenly enters. Some sailboats have ballast that retur...
Drones are most commonly known as unmanned aerial vehicles. They appeared about fifty years ago as toys, and about thirty years ago they began to be used for air reconnaissance. In the last ten years,...
There has been a lot of talk in recent years about the circular economy. It is an economy in which used products are used as raw materials for new products. In order for the processing of some waste t...
NASU is plagued by a problem. How to deliver a crane to the moon that should unload cargo from the cargo space of the lunar modules that would supply future lunar colonies? Existing cranes are heavy a...
On earth, many materials are used in construction. Some materials like wood are simply taken from the environment, while some materials are produced in large cement, brick, or iron factories. There ar...
The first programs were written on punched cards. Whether the program was written correctly could only be found out when the cards were placed in the reader and when it could be seen if it was working...
Around a billion people in the world have some form of disability. That’s about 15% of the world’s population. There are also many temporary invalids as a result of illness, injury or old age. Disable...
In the exploitation of metal and mineral mines, the raw material is usually in the form of sand. These sands contain valuable minerals that are important minerals in the production of many products ar...
In the case of accumulation lakes (1), especially artificial ones, a large problem is the deposition of sediments at the bottom of the accumulation lake, especially near the dam (2). Such lakes, in ad...
To date, several space stations have been built for the permanent residence of humans. They are made of solid material and in one piece taken into space to a location where they are placed at a certai...
Today, most mobile communication devices transmit data either through numerous repeaters located on taller buildings and poles. The new mobile 5G network will have to have repeaters every few hundred...
With the development of space technologies, it is increasingly likely that housing will soon have to be built for longer or shorter human stays on the moon. These colonizers will have to overcome a nu...
When mosquitoes attack, people usually defend themselves with various repellents. But if they are near swamps, it doesn’t help them much. To destroy a large number of mosquitoes, it is necessary to du...
Astronauts also have the physical need to go to the toilet in space. Sometimes when they are sick they have to vomit. In space, all this is a problem because there is no gravity so bodily secretions f...
The green ideology appeared at the moment of the most significant conflict between the nuclear lobby and the oil lobby. In the mid-1960s France and Germany were actively developing their nuclear power...
Searching for texts on this platform, with the help of filters, can be done by keywords and logical search by selecting the tags that the text author selected when entering text. Searching by keyword...
For renewables, and especially for wind, the biggest problem is that energy is produced at one point and consumed at another time when consumers need it most. Therefore, there must be spare capacity i...
Ships have been using wind power for hundreds of years. After the invention of the steam engine, and later the internal combustion engine, wind power was used only for sport and family sailboats. Deve...
In military vehicles in the war zone, the problem is mines are buried in the road. When a vehicle hits a buried mine, most of the mines explode in front of the front wheels above which the driver or p...
In order to live, we have to eat. A food table is the centre of a family gathering. Moreover, the family is the basic unit of society. Love among its members is a fundamental link that connects famil...
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Tihomir Čuljak
