Tihomir Čuljak
When the vehicle encounters deep snow, the wheels sink into the snow, and the car cannot go any further. In order to be able to continue driving, chains have to be put on the wheels, but if the snow i...
With wind turbines installed in the deep sea, the problem is strong winds and big waves. Large waves can tilt the floating base, and the entire wind turbine tilts with it, which is bad for their safet...
The price of electricity produced using wind energy depends on the cost of building the turbine, on the lifetime of the turbine, on servicing costs, and on the amount of energy produced. The biggest c...
Solar cells produce energy in a quantity that mostly depends on the power of solar radiation, the length of the day, and the surface of the solar cells. The problem is that in cloudy weather the amoun...
Minefields are cleared in various ways. After the war, they are cleaned manually, or with special vehicles for cleaning mines. During battles, they can be cleaned with explosions. For this, special ty...
When working in the garden, orchard and vineyard, one often has to bend down. Also, in the thicket, when cutting bushes, the woodcutter must bend down to the ground. Bending over is difficult for many...
Drones are a new, very cheap reconnaissance and offensive weapon that is difficult to defend against. Most often, they are so small that radars cannot notice them, and even people from the ground cann...
All over the world there are melioration canals that drain excess water from agricultural areas during periods of increased rainfall, or that serve to irrigate agricultural areas during the dry part o...
Modern protective vests made of kelver are most often used by police officers, solders, security guards and important persons. These vests protect very well against pistol ammunition. Military protect...
Solar cells are used to convert the energy of sunlight into electrical energy. This energy can be consumed immediately, it can be delivered to the electricity grid if it exists at the location, or it...
Pontoon bridges usually consist of floating parts over which small bridges are placed. They usually serve as temporary bridges, and are most often used in war. Such floating bridges must be portable a...
Many people made a floating raft of plastic bottles. Empty plastic bottles are placed in nylon sacks, or nets. Wooden pallets are placed on this floating structure. This raft has a large load capacity...
When a boat moves through the water it has to overcome a certain water resistance. Part of the resistance is formed on the bow where the boat penetrates through the water. The second part of the resis...
Today, many countries, especially China and Arab countries, are building artificial islands, but they are solid, not floating. This is usually done in places where the sea is very shallow. To make a s...
During the summer heat and dry weather, fires in open spaces are a frequent occurrence, especially in forests and thickets that are not cultivated and where there are no grazing livestock. And when dr...
Car tires carry a car. They are made by inflating them with air to be elastic enough to cushion the impact of a car crossing over bumps. In order to be able to carry a car they must be inflated to a c...
In the last hundred years, all armies have been vigorously developing offensive weapons, but investing little in defense equipment. After the soldiers occupy some terrain, it is most important to quic...
Fishermen at sea usually only catch some kind of fish. Everything else they catch is usually thrown back into the sea. These are various types of small fish, plankton, jellyfish, seagrass, and if they...
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...
Most of the inventions, innovations and technical ideas that I have published on this page, and some that I have not yet, I decided to put together into one whole and publish as an e-book. I divided s...
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Tihomir Čuljak
