The first two precepts of Cell Theory were enunciated near the middle of the 19th century, after many observations of plant and animal cells revealed common structural features (e.g., a nucleus, a wall or boundary, a common organization of cells... Read more
The ability to interpret body language is a skill that will enhance anyone’s career. Body language is a form of communication, and it needs to be practiced like any other form of communication. Whether in sales or management, it is... Read more
The word Electronics is originated from the word electron which is a branch of science dealing with theory and use of devices in which the electrons travel through a vacuum, gas or a semiconductor medium. Electronics is that field of... Read more
Although humans are primarily land dwellers, the Earth’s surface is largely water. The world’s oceans make up 99% of the planet’s biosphere and contain the greatest diversity of life. Even the most biologically rich tropical rain forests cannot match the... Read more
The idea of a biologically diverse environment is easy to imagine in the middle of the tropical rain forest, where there are living organisms all around you, but what about the desert? A lot of sand, cactus, scrubby plants, and... Read more
The land mass of the crust is thin compared to the rest of the Earth’s layers. It makes up only about 1% of the earth’s total mass, but the continental crust can be as much as 70 km thick. The... Read more
Surprisingly, life is found in many hostile environments on this planet. Very hot temperatures (5,000°C) near volcanic spouts rising from the ocean floor, and polar, subzero temperatures (−84°C) are at the extreme ends of the temperature range. The earth’s biodiversity... Read more
The word science comes from the Latin word Scientia which means knowledge. The science as a subject has come to mean the systematic, consistent and excellent study of the physical word including everything that can be seen, observed or detected... Read more
Native peoples, completely dependent on nature for everything in their lives, worshipped Earth as a nurturing mother. The soil sprouted plants and trees that provided food, clothing, and shelter. The rivers and seas gave up fish and shellfish for food,... Read more
The meaning of an automobile is a four-wheeled vehicle, carries a small number of passengers, driven by an engine or motor and independent of rails or tracks. The subject of automobile engineering is the study of engineering aspects and technical... Read more
In the world of technology, there are vast numbers of users communicating with different devices in different languages. That also includes many ways in which they transmit data along with the different software they implement. So, communicating worldwide will not... Read more
The abacus is the first known calculating device. This illustrates how the ancient computers worked. It was invented by the Chinese and is still widely used in the far east for commercial calculations. Also Read: Computer G.K. Multiple Choice Questions... Read more
Computer has become an essential part of our day-to-day activities. Computers are used more or less in every sphere of life. Its growing importance is because if its unique features such as Accuracy, Speed, Versatility, Storage, Memory, Automation, Diligence and... Read more
In recent years, the computer industry has grown at a phenomenal pace. In a short time of 35 years or so computers have improved tremendously. In the last decade the speed of the computer has increased 200 times. Also Read:... Read more
Computer is an electronic device for performing arithmetic and logical operations. Actually speaking electronic data processing does not go far back into the history. It is in existence merely from early 1940’s. The very first modern electronic computer became operational... Read more
It is a branch of technology known as information security as applied to computers. The objective of computer security varies and can include protection of information from theft or corruption, or the preservation of availability, as defined in the security... Read more