Essays on Electromagnetic Wave

Chapter 1 – Introduction to Color Study

1. What is the difference between direct light and reflected light? Give examples of each. Direct light travels from the source to the destination without being interrupted while reflected light is the light produced when the direct light bounces off a material. One example of direct light is the sunlight while reflection from the mirror is an example of reflected light (Young, Freedman & Ford, pp. 1080). 2. Describe the cause of color, the means used to generate it, and the effect. Light consists of a spectrum of light wavelengths which have a representative color; thus, upon reaching the retina ...

Communication

Communication

Introduction

Radio communication is one of the earliest forms of communication. It involves the transmission of information through electromagnetic waves, traveling at the speed of light. Radio communication has two main components: radio transmitter and radio receiver. A radio transmitter is an electronic device that initiates the communication process by generating radio waves containing information targeting a specific audience. A receiver refers to an electronic gadget that obtains the signals and converts them into an easily understandable format. It consists of the antenna, amplifier, tuner and detector (Lowe, n.d.). The antenna intercepts electromagnetic waves in the air and converts them ...

Introduction

Electromagnetism refers to the creation of a magnetic force from the movement of electrical charges. In order to find application in most electrical appliances, electromagnetism concerns the use of electric current to make electromagnets. This field of electricity is called Electrodynamics. It can also mean using magnetic field to induce an electric current. This field of electromagnetism is called Electromagnetic Induction. Almost all electrical appliances use one of the two types of electromagnetism mentioned above especially those with moving parts. This paper discusses the application of electromagnetism in a speaker.

Application of electromagnetism in a speaker

The speaker is basically an electronic transducer which converts electric energy ...

Introduction to antennas

Traditionally, people had problem with communication especially where it involved long distances. Wireless communication began in 1901, when Marconi received the first radio signal across the Atlantic Ocean. From that period, technology kept on advancing until the development of the present day antennas. Antennas form the basic components of any communication system that changes energy from one form into another. A receiving antenna changes electromagnetic energy into electric or magnetic energy. They work through transmitting RF signal that travels on a conductor into an electromagnetic wave in free space. An antenna maintains the same characteristic regardless of whether in use ...