Hacker News

points by Animats 3 days ago | 0 comments

Yes, you need some ultraviolet to attract insects. That's why bug-zappers have near UV lamps. They're usually compact fluorescent bulbs. Some ads say 365nm is the right color.

[–] somat 3 days ago

I get quite a few insects that fly around a camera, and that is near-ir. So many that a spider finds it worth it's while to build a web in front.

[–] pcdoodle1 3 days ago

The cozy heat from the IR LED array could be another factor

[–] andai 3 days ago

Can confirm my spiders like cozy heat. I often get them chilling directly above my computer station, legs spread out like a pancake. Presumably there's a warm air current hitting the ceiling. It might also be the light though.