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New touch-screen sensor rapidly detects hydration levels through your skin

For countless individuals across the globe, Ramadan fasting constitutes a profound and sacred time. However, abstaining from ...
Hackaday

Regular Old Diodes Can Be More Photosensitive Than You Think

Dhananjay Gadre] happened across a useful little trick the other day. Take any old 1N4148 or 1N914 glass-package signal diode ...