The Unseen Battle in Your Air: How HEPA Filters Defy Physics to Capture Ultrafine Particles

Published on Oct. 21, 2025, 6:32 p.m.

You see the spec sheet for a new air purifier, perhaps something like the LUFTRUM C3500, and a bold claim catches your eye: "ca…

Shark HE402 Air Purifier: Breathe Easy with Smart Air Purification

Published on Dec. 7, 2024, 8:28 a.m.

Look closely at a beam of sunlight slanting through a window. The air, which appears so clear, is revealed to be a turbulent oc…