Hacker News Reader

duffyton Experiments on a $50 DIY air purifier (2020)

Yeah, I think these DIY filter plans are great and I've built them myself, but I switched to commercial purifiers because of the sound. I don't have measurements but the box fan is substantially louder than either the Blue Air 211 or the Levoit Core 200 that I have.

duffyton HN now mostly readable on mobile

Same problem here. You can see the same effect on desktop FF by narrowing your window.

duffyton SpaceX Has Pinpointed the Problem That Caused the Falcon9 to Crash Land

Hydraulic systems are usually closed, can anyone explain why hydraulic fluid is expendable in this case?

duffyton Startups fighting over the word 'zen'

Personally, when I first heard of Zenpayroll and Zenefits I though they were similar enough services that they might be associated with Zendesk. I think there's definitely possibility of confusion.

http://marklaw.com/trademark-glossary/confuse.htm