You’ve probably seen Lichtenberg figures before, those lightning-like traces left by high-voltage discharge. The safe way to create them is using an electron beam to embed charge inside an acrylic ...

Dust, pollen, smoke removal is how well a model cleared air of fine clay dust and cigarette smoke when operating at a low speed that was typically one setting above the lowest speed. Many models have ...

Predicted brand reliability scores are based on the likelihood of newly purchased air purifiers experiencing a problem, adjusted for extended warranty or service contract status and product usage, by ...