6 Interesting Facts to Know About Radio Frequency

Radio frequency is one of the few technologies leftover from the late 19th/early 20th century that is still a backbone in our current society. In fact, many people don’t even know just how powerful radio frequency is in our world! A majority of the population also doesn’t know much about how they even work. This is why we’re here to help—in this article, we’ll be giving you 6 Interesting Facts to Know About Radio Frequency so the next time the topic comes up, you can show how much you know!

1- Radio Frequency Was Theorized Before Invented

Believe it or not, humans actually suspected that there were radio frequencies in the world before they were even invented. How is this possible? Well, in the 1860s Clerk Maxwell made a futuristic prediction that radio frequency existed, specifically referencing the ways he believed sound and light traveled through space as a form of electromagnetism. This theory is now referred to as Maxwell’s equations and is considered the foundation set for later discoveries that would prove the existence of radio frequency more explicitly.

2- Radio Frequency Wouldn’t Be Proven Until 1887

As a continuation of Clerk Maxwell’s theory, Heinrich Hertz would be able to prove the existence of radio frequency for the first time in 1887 with the discovery of radio waves. This demonstration lead to the unit with which we measure radio frequency, Hertz, being named after himself. This is largely considered to be the breaking point towards a modern understanding of radio frequencies, as this showed that—not only did they exist—but it was possible to replicate them within a controlled environment.

3- 1890 Was the Beginning of the Modern-Day Radio

The usage of radio frequencies in what we would now refer to as a modern-day radio didn’t occur until 1890 with an important discovery by Guglielmo Marconi. Marconi was able to not just harness the power of radio frequencies like Hertz, but also create the first example of a transmitter and receiver. In other words, he invented the modern-day radio! Radios are mainly operated by running a transmitter and receiver with any radio you have today being the latter, making this an important progression for those interested in radio frequency.

4- Radio Frequencies Go On Forever

Unlike other forms of waves, radio frequencies don’t have a stopping point. In fact, many of them are expected to travel for an infinite amount of time if they are not caught by some sort of receiver. This becomes especially interesting when you consider that it is near-impossible to trace the motion of radio frequencies. This means that other planets or potential beings in space may have heard radio frequencies from Earth, if such a situation would ever exist…

5- Radio Frequency is All Around Us

Though it’s likely that you only associate radio frequency with literal radios, the technology is actually used frequently across many different parts of society. For example, each time you text someone using your cell phone, you’re actually sending a radio wave. The cell phone towers that are placed around society act as transmitters, while phones are receivers. How do phones tell apart each radio frequency? Each individual frequency is unique from the others, making sure that no messages get lost in transmission.

6- Radios Help Differentiate Between Signals

When you use a radio, changing the dial does not simply catch onto the signal you’re looking for. In fact, it’s actually much more complicated than that. Because all radio frequencies are picked up by any given radio, the radio tuner you’re adjusting to get to the station you want is actually narrowing its search to only catch the desired frequency. This is also why when a radio is malfunctioning, it will often pick up the transmission of another station. Because the radio isn’t working properly, the tuner is likely being affected, causing it to flip from station to station looking for a reliable frequency source.

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