Subject to the availability of the business entity name, an entity suspended/forfeited by the: 1  Secretary of State can be revived by: Filing a current Statement of Information with this office. 2  Franchise Tax Board: Contact the Franchise Tax Board for revivor requirements.
by admin. Mechanical vs Electromagnetic Waves. Mechanical waves end electromagnetic waves are two types of waves discussed in physics. Mechanical waves are waves that are caused by mechanical actions such as vibrations. Electromagnetic waves are waves created by oscillating electric and magnetic fields.
An electromagnetic (EM) wave is not a sound wave. A sound wave is mechanical energy, and an electromagnetic wave is electromagnetic energy. The EM wave could be a radio or light wave, but in any case, it is composed of moving electric and magnetic fields. This electromagnetic wave can move through air or the vacuum of space, but sound (or any mechanical wave) must have a medium to travel through.