VLC can use existing light fixtures, turning them into communication devices, thus requiring minimal additional infrastructure. elaborate
The word "propaganda" originally referred to a congregation or the spreading of the Catholic faith. Its modern, negative connotation developed much later. elaborate
Ham radio operators can communicate across vast distances, even using low power, by bouncing radio signals off the ionosphere (a layer of the Earth's atmosphere). elaborate
The fear of public speaking, glossophobia, is more common than the fear of death. elaborate
The word "media" is plural; the singular is "medium." elaborate
The term "social media" wasn't widely used until the mid-2000s, even though online communities existed long before then. elaborate
Li-Fi can transmit data at speeds up to 100 times faster than Wi-Fi. elaborate