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WASTED on Instagram: "🤔 The radio is a device that uses electromagnetic waves to transmit and receive audio signals, typically in the form of music, news, talk shows, or other types of broadcast content. It has been a vital communication tool since the early 20th century, allowing people to listen to broadcasts from across town or even across the globe. Radios work by tuning into specific frequencies on the radio spectrum, which is divided into different bands, such as AM (Amplitude Modulation)

Wealth on Instagram: "Your Wi-Fi isn’t just connecting devices anymore, it can also map human movement through solid walls. 🚶‍♂️📶 This setup uses Wi-Fi Channel State Information (CSI), a technique that measures how radio waves subtly change as they bounce off objects, including the human body. When someone moves, stands, or shifts posture, those disturbances are captured in the signal. Multiple small Wi-Fi devices transmit and receive signals simultaneously, while software analyzes tiny variat