social capital. Stock of community's goodwill and trust acquired by an organization over the years, through its understanding and addressing of the concerns and priorities of the citizens. See also social value.
All electromagnetic radiation travels at the same speed (in a vacuum). Electromagnetic radiation travels very quickly. There is nothing which can travel faster. The speed is 300,000,000 m/s in a vacuum (that is 300 million metres per second-not easy to imagine!). Electromagnetic radiation can be thought of as particles or waves (the word radiation is also used for radioactivity).
Answer Wiki. The question is why electromagnetic waves can travel in space. We all know that EM waves doesn't require any medium to propagate itself. The answer is there in the word itself - Electromagnetic. An electric field generates a magnetic field at 90 degree phase angle, and the resultant magnetic wave generates the electric wave at 90 degree phase angle.