How does a television set work?

Pictures and sound, flying through the air to a box in your house? Back in the 1940s, it seemed like a miracle.

Jay Weitzen, Professor of Electrical and Computer Engineering, UMass Lowell • conversation
Dec. 5, 2022 • ~6 min

How does Wi-Fi work? An electrical engineer explains

Wi-Fi has become a fundamental part of modern digital life, but its foundation is the same as the technology that allowed your great-grandparents to listen to their favorite radio programs.

Bhaskar Krishnamachari, Professor of Electrical Engineering, University of Southern California • conversation
Jan. 12, 2021 • ~5 min

Harvard: Sound transmitted by laser is ultra-high-speed Wi-Fi breakthrough

In a breakthrough on the road toward ultra-high-speed Wi-Fi, Harvard researchers have demonstrated for the first time a laser that can emit microwaves wirelessly, modulate them, and receive external radio frequency signals.

Leah Burrows • harvard
April 25, 2019 • ~5 min

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