Abstract: Based on Mach-Zehnder interference (MZI) principle, we propose a balloon-like optical fiber micro-liquid-level sensor and verify its performance through experiments. The sensor can ...

Abstract: This article proposes an intensity-modulated liquid level sensor (LLS) based on cascaded long-period fiber grating (CLBG) and fiber Bragg grating (FBG) structure with temperature ...

The mechanism of the HackKey non-contact sensor, which measures piano keyboard movement at a temporal resolution of 1000 fps. It utilizes light reflection to measure the position of the underside of ...

Your Apple Watch Can Once Again Measure Blood Oxygen Levels. Here's How The smartwatch's Blood Oxygen app lets you measure the oxygen level of your blood on-demand. It's been MIA for more than a year ...

If you're jetting off this summer and planning to cram your life into a hand luggage bag, there are some items that could land you in hot water. Hand luggage liquids generally need to be under 100ml ...

Department of Clinical Laboratory, Shanghai Chest Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200030, China ...

Peter Gratton, Ph.D., is a New Orleans-based editor and professor with over 20 years of experience in investing, risk management, and public policy. Peter began covering markets at Multex (Reuters) ...