An orbiting disco ball gave Einstein’s theory its most precise test yet

Albert Einstein’s general theory of relativity predicts that a rotating mass like the Earth pulls the fabric of space and ...
The New York Times

The 3 Best Speed Cubes (And Why the Rubik’s Cube Isn’t One)

We independently review everything we recommend. When you buy through our links, we may earn a commission. Learn more› By James Austin James Austin is a writer covering games and hobbies, which means ...
IEEE

Wireless Eavesdropping on Wired Audio With Radio-Frequency Retroreflector Attack

Abstract: Recent studies have demonstrated the feasibility of eavesdropping on audio via radio frequency signals or videos, which capture physical surface vibrations from surrounding objects. However, ...
IEEE

Modulating Retroreflector-Based Satellite-to-Ground Optical Communications: Acquisition, Sensing, and Positioning

Abstract: This paper focuses on the optimal design of a modulated retroreflector (MRR) laser link to establish a high-speed downlink for cube satellites (CubeSats), taking into account the weight and ...