The concept of ‘wave’ appertains to those undoubtedly particularized conceptions that remain largely incomprehensible to a lion’s share of students, even despite the fact that they receive the knowledge about the main characteristics of waves during first school classes in physics. In modern physics, a wave is determined as an oscillation, which occurs with a transfer of energy through a medium. In fact, a wave process may have very different physical characteristics; therefore, it is possible to divide all kinds of waves in several groups: mechanical, chemical, electromagnetic, gravity waves, spin waves, etc. According to the more specific characteristic of waves, they are divided into several separated groups.
Introduction and Track record of the Study Safety and security has a big role in this century. Everyone is concerning about their security and safety when they are staying in the hotel during getaway. Inside the worldwide hotel industry, the management too concern about security and safety issues pertaining on the guests and employees. In the hospitality industry, these are pleased with themselves because they're known friendly to everyone in such way of frame of mind in welcoming their customers or guests. Therefore, they ought to practice and keep maintaining the idea of a "home-from-home" with their "open-door" tackle with comfort, convenience and privateness to their guests (Gill, Moon, Seaman & Turbin, 2002).