The 100% DIY Build Subwoofer Passive Crossover Low Pass Filter project is one of the brilliant art of engineering that is build based on electronic fundamentals. It features a butterworth type filter ...

With the reddish-orange skies and smoke-filled air, Californians who had previously never heard of PM2.5 pollution are quickly learning about the Air Quality Index and what they need to do to protect ...

Two weeks ago, I had you use cheesy digital photo filters on your photography. This week, we’re bringing filters back to the analog realm. https://gizmodo.com/55 ...

Eric Schildge is terrified to go back to school in a few weeks. An 8th grade English teacher in Newburyport, the fear of in-person learning during a pandemic is familiar to him. He was in the ...

No, I don't mean a box fan with a crap filter in front of it. I'm thinking about something more substantial with a MERV16 filter. I've got two applications in mind, household dust in my master bedroom ...