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The Science Behind: Bluetooth

The Science Behind Bluetooth

Humans love to be connected with people they know. So we have adopted many technologies to help us stay connected with friends and family. One of the most popular technologies is Bluetooth. Bluetooth connects your mouse to your computer, phone to your car, AirPods to your phone. So the question arises, how does Bluetooth work?

What is Bluetooth?

Forms of wireless communication are very common. Many of us have wifi in our house and schools. Much like wifi, Bluetooth sends data across using low power radio frequency between the 2.4Ghz-2.483.5Ghz band. Many items you use to take advantage of this same radio-frequency band, including baby monitors, garage-door openers, and the newest generation of phones.

As of 2021, there are two types of Bluetooth technology: Bluetooth Low Energy(LE) and Bluetooth Classic. Both use the same frequency but Bluetooth LE uses less power, and it can be used to broadcast making it a more popular option. While Bluetooth Classic can send more data faster than Bluetooth LE, each has a different purpose.

How does Bluetooth work?

When two devices that are using Bluetooth Classic come near each other they make sure the user is okay with sharing data and it is safe to share data. Then the two devices form a network which they use to share data. Bluetooth LE works differently; the beginning of making a safe connection is the same. A device that broadcasts information creates packets of information that it sends across. The receiving device will find the packets by scanning (listening) for the packets from appropriate devices. Most times, scanning for packets only happens when the user allows the scanning to start from their device. After scanning the packets, the user can see the details of the devices sharing packets and the user chooses whichever.


As the world moves forward with wireless technology, Bluetooth will be one of the most popular technologies for the next generation. I hope you learned something from this article, and see you next time.

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