When you want to send a message to someone, it's like sending a package in the mail. You put your message in an envelope and send it off. But, just like with mail, it takes time for your message to arrive at its destination. That's what we call "time of transmission."
So, let's say you want to send a message to your friend. You write the message on a piece of paper, put it in an envelope, and mail it to your friend. But, it takes a few days for the mail to be delivered, so your friend won't get your message right away. The time it takes for your message to travel from you to your friend is the "time of transmission."
The same thing happens when we send messages over the internet or through other electronic devices. When you send an email or a text message, the message has to travel through a bunch of different wires and devices before it reaches its destination. That journey takes time, and that's what we mean by "time of transmission."
This is important to know because it helps us understand why sometimes our messages don't get delivered right away. Sometimes there can be delays or problems along the way that slow down the time of transmission. But, it also helps us appreciate the amazing technology that allows us to send messages instantly across the world!