Protect Hearing with Smartphone App [video]

Protect Hearing with Smartphone App [video]

According to recommendations by the National Institute for Occupational Safety and Health (NIOSH), working in an environment of 85 decibels (dB) for eight hours will expose you to the maximum allowed daily dose of sound. How loud is 85 db? It’s quieter than most...
Tiny Chip Measures Blood Flow

Tiny Chip Measures Blood Flow

Ever listen to a train, or airplane, or helicopter as it approaches, passes, and then starts going away? The sounds are higher pitched when approaching, and lower pitched as the source of the sound moves away. The reason for this is that relative to your stationary...