#physics
General relativity is a theory of gravity, but it is distinct from other theories of gravity in several key ways. The theory was developed by Albert... Read more
Jet engines are used in aircraft to propel them forward by creating a forward thrust. There are various types of jet engines, but the most commonly... Read more
Einstein's theory of relativity is one of the most significant scientific breakthroughs in history. Prior to Einstein's theory, the prevailing view... Read more
Kinetic energy is the energy an object possesses due to its motion, while potential energy is the energy an object possesses due to its position or... Read more
Planetary nebulae and HII regions are two types of nebulae found in space. Planetary nebulae are formed by the ejected outer layers of dying low to... Read more
Sound is a type of energy that travels through different media, such as air, water, and solids. Vibrating objects, such as vocal cords or the strings... Read more
Light travels through space in a straight line at a constant speed of 299,792 kilometers per second (or approximately 186,282 miles per second).... Read more
Lorentz's theory of relativity was developed in the late 19th and early 20th century, while Einstein's theory of relativity was published in 1905 and... Read more
According to Einstein's theory of special relativity, the speed of light is an absolute limit that cannot be exceeded. This means that no matter how... Read more
The theory of relativity is a set of two interrelated physical theories proposed by Albert Einstein. The first one, called special relativity, was... Read more