Cardiograph is a universal app that purports to measure your heart rate via the cameras built into the iPhone or iPad 2. The app has a very slick-looking user interface reminiscent of a real-world ...

Novosibirsk State Technical University has developed a unique sports cardiograph. A special feature of the Novosibirsk novelty is the Bluetooth 4.0 module, which allows you to transmit a signal from ...

If you enjoyed this article, I’d like to ask for your support. Scientific American has served as an advocate for science and industry for 180 years, and right now may be the most critical moment in ...

- a medical instrument that measures the mechanical force of cardiac contractions and the amount of blood passing through the heart during a specified period by measuring the recoil of the body as ...