With iPhone Data Recovery software, you can not only recover all the WhatsApp chat history, but also photos, videos, emoji, etc. You can download the free trial version of iPhone Data Recovery software and have a try (it supports to recover on Mac)! Step 1.
A wave is a method of transferring energy from one place to another without transferring matter. Mechanical waves are those that require a medium for their transfer and include water waves, sound waves and waves in stretched strings.
1. (General Physics) physics a mathematical function of position and generally time, used in wave mechanics to describe the state of a physical system. Symbol: Ï.