What is Telegraph and How it works
What is Telegraph and its Working
A telegraph is a device that is used to send and receive messages between two distant points.
Construction:
An electric telegraph consists of a battery that is connected to a buzzer through the tapping key, There is only one wire between the buzzer and the tapping key. The circuit is completed by connecting the other terminal to the ground few feet below. The earth being moist acts as a good conductor.
Working:
When the tapping key is pressed, the receiver produces a buzzing sound. The interval between two buzzing sounds can be controlled by the interval between pressing the tapping key. The international Morse Code which is a combination of dots and dashes is used to send and receive messages with the help of telegraph.
Note: Many high school students think that it is better to go to work after school, enroll in a correspondence department and after 5-6 years have both a “tower” and work experience, or to spend 5 years at the university on a full-time basis, to test, so to speak , all the joys and sorrows of student life. Consider all the pros and cons. How well is the correspondence department of the university? The fact that a visit to the university (institute) takes only a couple of weeks for six months, to part-time students are loyal, look, first of all, on knowledge (if any), and not on attendance. That is, you can work peacefully, asking for a session only, which does not last long. However, the disadvantages of this type of training are available: for 6 years of correspondence, students study for a total of only six months. Thus, it is hardly possible to obtain a good amount of solid knowledge in the chosen specialty.
