A humidifier can be incredibly useful as the colder months dry out the air, but it still requires maintenance. Here's how to ...

Overall, if you are looking for a humidifier to run in a bedroom or other similarly sized room that is easy to fill, quiet to ...

Winter provides a break from humidity, but you may need added moisture to combat dry indoor air. Here's what setting to use ...

Abstract: It is a long-lasting issue that process variations, such as residual stress and poor dimension definition, deteriorate resonant frequency control of a piezoelectric micromachined ultrasonic ...