Hello! It's nice to see you again.
Prepare yourself, we are going to discuss today...
--- .... --..-- --. .-. . .- - .-.-.- ..-. .. -. .- .-.. .-.. -.-- .-.-.- ... --- -- . --- -. . --..-- .-- .... --- --..-- -.-. .- .-. . ... --..-- ..-. --- .-. --..-- -- --- .-. ... . .-.-.-
Do you think the above dots and dashes are useless?
No. They are not useless. But They Are...
...yeah, you guessed it right, the MORSE CODE !!!
"Morse code" is named after one of its co-developer Samuel F. B. Morse, who was actually a very good painter/artist.
Get ready, it's story time.
Morse was very good at portrait painting. Once, in 1800s, he was gone for an official painting project, somewhere few hundred miles away from his home.
While painting, one day, he got a letter of his father (via a horse messenger) about recovery of his ill wife. But the next day, he got another letter of his father (again via another horse messenger) detailing his wife's sudden death!
He left immediately for his home, leaving his project unfinished. But by the time he arrived home, his wife had already been buried. How tragic! Heartbroken by this incident, that he was not able to know his wife's conditions due to the 'distance-problem' (since horse messengers took days to transport letters), he decided to explore some means of faster long-distance communication.
Ah! That's history of humans! Tragic necessities breed invention!
After few years, inspired by electromagnetic experiments of one of his friend, he invented the concept of a single-wire 'telegraph' ('telegraphy' is about transmitting text or symbols across long distances, without any physical exchange); and submitted it's patent application.
There were also parallel developments at that time, but Morse fought hard to be called the 'sole' inventor of this technique, as can be felt in one of his letter during those days. He wrote:
"I have been so constantly under the necessity of watching the movements of the most unprincipled set of pirates I have ever known, that all my time has been occupied in defense, in putting evidence into something like legal shape that I am the inventor of the Electro-Magnetic Telegraph! Would you have believed it ten years ago that a question could be raised on that subject?" - S. Morse
That was a story from history. Indeed, over passage of time, the morse code underwent many standardizations and today, stands as a global standard for telegraphic transmission of data.
But how does Morse Code work?
Well, we will only discuss the 'coding' technique here, although, its main popularity and strength lies in its property to be easy-to-transmit, just by using on-off tones, flashes of light, or clicks, etc.; and to be easy-to-recieve by any skilled person who knows the 'coding-scheme'. In fact, it's the 'coding-scheme' that we will see now, and that's all how it works.
So, this was about the most popular encoding and decoding scheme in the world of telegraphy. Now, next, we will come back to our discussion of hiding 'secret' messages that only our trusted friends can read.
In caesar cipher, the Key was a number between 1 to 25; but in other techniques, its 'type' can differ highly. In the next post, we will discuss a technique in which the Key will be a 'string' (i.e. a long sequence of characters), and the ciphertext resulting from that technique is claimed to be 'very strong' and even, 'Unbreakable'!
Sounds Interesting? Very much. So see you there.
Bye till then.