Tihomir Čuljak
Tents, parasols and umbrellas are made so that the rain that falls from above is taken to the sides so that the water slides to the ground next to them. However, these human aids for protection from t...
In many smaller towns and villages along roads, there are stormwater drainage canals into which water from roads and house roofs flows during rains. In larger cities, these catchment waters are draine...
There are several ways to purify salt water or dirty water. Distillation processes are most commonly used, as well as osmosis processes in which water passes through semipermeable membranes. Distillat...
In today's space stations, all food and water for the crew must be brought from the ground. This is a very big logistical and material problem that will have to be solved on longer trips by producing...
Ships are built in shipyards, most often on dry docks that are slightly sloping towards the water surface. On such docks, there are rails on which the ship is built, and after the completion of constr...
Maritime transport is the cheapest transport, and immediately behind it is rail transport. In order to speed up and reduce the cost of transport with these two modes of transport, container traffic ha...
There are various types of seawater desalination devices for drinking water and plant irrigation. Most of these devices use a lot of energy to evaporate water and convert it into water vapor which is...
For twenty years now, many large car companies have been working to create a car that will be able to drive without a driver. Even then, they promised that the development of this technology would tak...
At the bottom of the sea, various works are often performed by divers. Some such works can be done much more easily when a dome is placed at the bottom of the sea under which air is blown. Then worker...
In recent years, many authoring teams have been encouraged by grand prizes, mostly in the US with made cars that can take off vertically and fly at shorter distances. Flying machines can be divided in...
There are various search engines on the Internet that search the entire Internet, or just individual databases. Search engines that search the entire Internet are based on keyword searches. This searc...
In many parts of the world, people have built houses from the country. Fat earthy walls are excellent heat insulation, in summer they are comfortable, and in winter warm. Energy consumption for heatin...
The advent of communication tools for mobile phones has created the possibility of safer, faster and cheaper transmission of messages than by talking through mobile operators, exchanging SMS messages,...
Chains for cars used for driving on snow can be purchased in stores. It’s a little harder to get auxiliary tools for driving over deep mud, which often happens when off-road cars drive through a fores...
One-wheeled trolleys, the wheelbarrow, are a small innovation that has significantly facilitated work in construction, but also in agriculture. These carts allowed one man to easily carry a load great...
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,...
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...
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Tihomir Čuljak
