By Aakash Sinha
When I was a child, many unusual questions used to trigger my mind, some I got the answers and rest are still unexplored. Human is a social animal with brains. We have got a special ability, we can reason. In our day-to-day life, we come across several stuff which we accept it without knowing the cause of that activity. But the question is why? How?
In this article, we will see the reason behind some of the activities that we see every day but never questioned about it.
Why the wheels of any vehicle are circular?
Why tube light blinks before turning ON?
Why the moon looks bright yellow at night?
Why do stars twinkle at night?
Why the sky is blue in colour?
How water comes inside the coconut?
How does water come on Earth?
How a program recorded in a studio reaches our Television sets?
A studio is the action area of artists where they perform any act. When the program is recorded it is sent to the Earth Station via cables. Earth station is a terrestrial terminal station designed to uplink and downlink data (programs) to and fro from the satellite. Once the program is uplinked to the satellite it can be viewed in any part of the country using the transmitter and receiver unit (at home, DTH). The program is downlinked at a T.V tower unit, then the different frequency is embedded for different programs (for DD News= 224.5MHz) in the form of electromagnetic waves. These waves are then transmitted in the air through an antenna. Now the same frequency is identified by the T.V receiver, it decodes it and we can see the desired program.
Have you ever noticed the direction of your DTH antenna?
We cannot solve the problems with the same thinking we used when we created them – ALBERT EINSTEIN
Aakash is a student of engineering at Sir M. Visvesvaraya Institute of Technology, Bangalore. Twitter @aakashsinha1994