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What is Ecology? It would be easier to answer this question a few decades ago because then it was used only by biologists. The word “Ecology” comes from the Greek “Oikos” – house, dwelling, abode. It was proposed in 1866 by the well-known German naturalist and zoologist Ernst Haeckel to denote the “general science of…
A quality air purifier is a small investment for such an important factor in our lives. A man without air can do a few minutes, without water for a few days, and without food for a few weeks. So, if you are not sure which air purifier you want to buy and which things to…
When two oppositely charged bodies A and B connected by a neutral conductor, all free carriers charges under the action of an electric field begin moving towards:• body A, i.e., a place of higher potential if they are negative;• body B, i.e., a place of lower potential if they are positive. The image below shows…
We are all witnessing climate change around us. The most surprising change was the snow in Texas this winter. There are a lot of effects of climate change. Today we have reason to believe that human activities have triggered a chain of reactions that have led to changes in the atmosphere, water, earth, and life…
The French physicist Louis De Broglie in the 1920s assumed that the same duality light have can be applied to all other forms of matter. More specifically, he believed that all types of microparticles (for example, electrons) also have wave properties. They can show the phenomena of interference, diffraction, etc. It was a time when…
At the end of the last century, a scientist discovered the phenomenon, electron emission from a metal surface when it is illuminated by visible or ultraviolet. The photoelectric effect is the appearance of an electron (photoelectron) erupting from metal by light. To be more precise, the photoelectric effect (photo effect) is the phenomenon that electrons…
The world energy crisis is a lack of resources around the world, and therefore, a politically questionable concept. The new challenge is energy and its slow price growth on the stock market. Defining the public interest related to the amount of power and the distribution of control over energy use can lead in two opposite…
Suva Planina is located in southeastern Serbia, about 17 km from Nis, next to the highway Nis – Sofia (Capital of Bulgaria). Suva Planina stretches in the form of a horseshoe in the direction northwest-southeast. It starts 3 km from Niska Banja and ends in the Luznica valley near Babusnica. Suva Planina stretches in the…
The main emphasis in saving energy on traffic and transport is the reduction of road transport and development, sustainable and efficient public transport, and information indirectly related to sustainable mobility policy (cycle paths, public transport, use of biofuels, etc.) In data on energy consumption in traffic, it should be taken into account that is the…
Most of the energy we use comes from contributing sources of environmental degradation. These environmental consequences give us a significant reason to look for opportunities to reduce the consumption of energy. More efficient home energy saving will have a positive effect impact on the environment. And at the same time, that will lead and to…