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New Laser Zaps Mosquitoes in SlowMotion | National Geographic

推荐理由

I want a mosquito-killing turret [1] that you could put in your bedroom and sleep in peace. Turns out one exists [2] (in theory—no commercial product a decade later), but the one I was thinking of would use microphones rather than cameras [3] to detect the bloody suckers. Thing is, I can't find any prior research or even hints that people have considered this approach. (The closest I can find is an app [4] that detects a mosquito from ≤10cm away.) Here are some of my guesses for why it's not been done: A. Maybe it's too difficult to distinguish mosquito buzz/whine from background noise, even when filtering in only known mosquito frequencies (~400Hz [5]). B. Maybe it's too slow to sweep a room with a directional mic that's focused enough to detect mosquito sounds? (Say the turret in one ceiling corner of a 12x12x8ft room.) C. Maybe directional mics don't work well for all sound in their cone and so need to be able to "focus" at different distances (by dynamically changing the parabolic dish's shape), thereby increasing the room sweep time? D. Maybe the parabolic dish needs to be so big that it just looks ridiculous? E. Maybe all of this is possible but the type of microphone is so expensive that it's worth pursuing commercially? I'm curious what you all think about this. It'd be an interesting thing to try making—who hasn't wanted to make a death ray while simultaneously furthering the fight against humanity's deadliest enemy? [6] See also this research paper: Detecting Insect

引用mLuby · 原文2021年6月

说明

这是2010年由National Geographic发布的一部新闻，主题归在Medicine & infectious disease。它讲的是laser mosquito defense这一支里的具体问题，而不是把整个领域扫一遍。适合按兴趣直接看、不打算先补课的人。内容上可以概括成：A short National Geographic piece showing a laser system that tracks and kills mosquitoes, filmed in slow motion, as part of anti-malaria efforts. It comes from Intellectual Ventures' 2010 work.这些读者给出的理由，核心是：HN commenters bring it up as proof that laser mosquito defense is technically feasible, in threads about DIY pest-zapping projects.它贴着当时的技术，看的时候要记得那是那个年份的判断。从2021年到2022年，有0位不同的读者在0个不同月份把它推荐出来，其中明确叫别人去看的有0次。适合想知道那个时间点大家在争什么的人。结论会过时，争论本身仍然有用。如果已经会了基本定义，就把注意力放在它怎么把laser mosquito defense变成能跟着复述的例子。

视频信息

频道: National Geographic
时长: 2 分 22 秒
发布年份: 2010

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