A common concept in physics, waves are described as disturbances that transmit energy through matters and space. Sometimes, they are associated with mass transport, sometimes, they are not. Waves are reported, in physics, at a fixed point, and consist of oscitations or vibrations of a physical field or medium. In physics, there are known two types of waves: mechanical and electromagnetic. While mechanical waves take place in solid, physical matters, electromagnetic waves do not require a physical medium to propagate. They are formed from oscillations of electrical and magnetic fields, periodic ones, generated by particles, and thus, they can also travel through the vacuum. In this category are included radio waves, microwaves, infrared radiation, visible light, ultraviolet radiation, X-rays and gamma rays. (more…)