By common sense, soundwave can be reflected. Based on this principle, sonar is invented. Technically, sonar is a system that utilizes transmitted and reflected underwater sound waves to detect and […]
Crude oil is useful in a variety of ways. It is so powerful in industry because it contains hydrocarbons of varying molecular masses, forms and lengths (such as paraffins, aromatics, […]
Solar Eclipse occurs when moon is right between Earth and the Sun. When this happens, the moon blocks the sunlight and all we can see on the Earth is the […]
The Earth’s Geographic Poles are opposite to its Magnetic Poles. The Earth’s magnetic field is just like the one produced by a huge bar magnet at the center of […]
