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LED candles are neat, but they’re very suboptimal for wish-making: you can’t blow them out. Unless you take the circuit from ...
A joint research team led by Professor Park Kyoung-Duck and Associate Director Suh Yung Doug of the Center for ...
Feeling down? Lighting your indoors with bright bluish light at the right time of day can reduce depression, increase ...
It’s the evening before publication, and a pair of Hackaday writers convene to record the week’s podcast. This week Elliot Williams is joined by Jenny List, and it’s a bumper ...
Abstract: In this research, we introduce an innovative wearable device capable of capturing photoplethysmography (PPG) signals under two conditions: No-LED and low-intensity LED. Incorporation of both ...
Edited by Jeremy Nathans, Johns Hopkins University School of Medicine, Baltimore, MD; received October 24, 2024; accepted June 2, 2025 ...
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