Sound waves and electromagnetic waves are different. Sound is composed of density waves in the air or some other form of matter. The different types of electromagnetic wave â¦ s are gamma rays, X-rays, ultraviolet rays, visible light, infrared radiation, microwaves, and radio waves.ound waves and electromagnetic waves are different. Sound is composed of density waves in the air or some other form of matter. The different types of electromagnetic wave â¦ s are gamma rays, X-rays, ultraviolet rays, visible light, infrared radiation, microwaves, and radio waves.
Google Hangouts. Google Hangouts is a communication platform developed by Google which includes instant messaging, video chat, SMS and VOIP features. It replaces three messaging products that Google had implemented concurrently within its services, including Google Talk, Google+ Messenger (formerly: Huddle), and Hangouts, a video chat system present within Google+.
reCAPTCHA is a free service from Google that helps protect websites from spam and abuse. A âCAPTCHAâ is a test to tell human and bots apart. It is easy for humans to solve, but hard for âbotsâ and other malicious software to figure out. By adding reCAPTCHA to a site, you can block automated software while helping your welcome users to enter with ease.