The east coast, and New York in particular, is receiving an unwelcome taste (and scent) of the climate crisis to come, as smoke from massive Canadian wildfires billow out toward the Atlantic Ocean.

It's almost summer, and if recent years are a guideline, that means heightened threats of wildfires. Billowing smoke from wildfires can cause dangerous air quality levels. Air filters in homes can ...

Molekule is the world’s first air purifier that destroys pollutants at the molecular level, marking a significant upgrade from standard HEPA filters, which were invented in the 1940s. Its process, ...

I built a cane water filter to clean water naturally and efficiently. Layered materials trapped sediment and purified water.

This article is sponsored by Waterdrop. Product choices and opinions expressed are from the sponsor and do not reflect the views of How-to Geek editorial staff. Clean tap water is often taken for ...

BAS monitoring of the differential pressure across a filter within an air system is commonplace. The differential pressure across the filter will increase as the filter gets loaded. If it gets too ...

A number of years ago, I posted an article and spreadsheet on EDN that enables the design of 2 nd and 3 rd order Sallen-Key low pass filters given the poles of their filter characteristics. The user ...

Many sensors have a small analog signal that rides on top of a larger dc pedestal. For these circuits (Fig. 1), the signal must be ac coupled and amplified before it’s digitized. The feedback of an ...

The idea seems pretty simple, once someone explains it. The virus that causes the pandemic disease Covid-19 passes from human to human on tiny droplets of spittle, through the air. Masks block some of ...