Author: Saiful Islam

What is meant by Satellite? The objects that move around the earth or any other planet constantly staying on their own orbits are known as satellite. For example, moon is the satellite of the planet ‘Earth’. The other planets of the solar region have also one or more satellite (S). Recently, the scientists have made artificial satellites and these are sent to the outer space through buster rockets. Then they start to move round the earth. The equilibrium between the centrifugal power of satellite and the gravitation power of the earth enables the satellite to move round the earth keeping…

Business executives, social activists, political and religion leaders deliver speeches on a regular basic on their respective areas of works. Though speech, they try to communicate information, ideas, wishes and opinions to their colleagues and peers. Hence, delivering effective and convincing speech is very essential. For the purpose of delivering effective speech, the following steps or ways should be followed. Determining the purpose Before delivering speech, the speaker should determine the objective clearly. The objective of speech may be to inform, to persuade or to convince others. Analyzing the audience and occasion Success of any speech depends on proper understanding…

Visual communication is a kind of non-verbal communication. When communication occurs by means of any visual aid, it is known as visual communication. Thus, communication that occurs through facial expression, personal appearance, gesture, posture, printed picture, sign, signal, symbol, map, poster, slide, chart, diagram, graph etc. is called visual communication. Through visual communication people ca easily exchange information among themselves without uttering or writing any word or making any sound. When the receivers are illiterate or incapable to see the written message or to hear and understand the meaning of oral communication, visual mode of communication is effective there. For…

Pre-requisites of a Valid Meeting There are different types of meetings. Whatever be the type of meeting, it must fulfill the following pre-requisites: Called by competent authority: Meetings should be called by the competent authority. If the competent authority does not call the meeting, it will be invalid. In case of company meeting, board of directors is usually considered to be the competent authority. Lawful purpose: The objectives of meeting should be lawful. If meeting is called for dealing with any unlawful or illegal issue, it will be invalid. Serving notice of the meeting: Serving notice of the meeting to…

What Is Multimedia By the word multimedia we mean many media. By adding some extra hardware and software in a compute system, multimedia allows to perform multiple functions including audio, video, animation, graphics etc. along with the general functions of the computer. In this way, when several works are performed at a time in a computer it is called multimedia. Multimedia helps in communicating through computer by combining all the media of expressing human attitude and feelings such as text, audio, video, animation, graphics, interactive computing etc. in the computer screen. The elements of multimedia are shown in the picture…