Tihomir Čuljak
Rabbits are bred for meat, but also as pets. Guinea pigs or hamsters are bred as pets. They all reproduce very quickly. The biggest problem is the stench that spreads when their feces are cleaned. Thi...
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...
NASA has plans to resend people to the moon, but this time on a more permanent mission. They have to solve a lot of problems for this project. The most important problems are around the distribution,...
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...
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...
Many tourists visit ancient abandoned cities every day in Latin America. They remain caught up when they see the walls built with large stone blocks. They are so arranged that no jewels can be placed...
According to some satellite images, the land surface under vegetation increases with increasing CO2 levels in the air. The same footage shows a very large disappearance of forests, which disappear in...
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...
Many innovators have been trying to make a car powered by photocells glued to the roof of a car. The problem is low power, and therefore low speed. For this car to be usable, photocells must first rec...
The cumulative charge is a type of explosive charge where the orientation of the explosive jet depends on the filling form. Cumulative charges are divided by form, direction of energy, detonation an...
Many places around the world are planning to build floating tunnels. These are tunnels placed in water at a certain depth below the surface, or at the bottom of the sea. Typically, such tunnels are in...
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Tihomir Čuljak
