is there a wave that's slow enough for a normal computer to sense the difference? and that it is a non-physical wave ( ie, em waves, sonic waves)
i want to build a distance sensor that senses about the distance of an arm apart (using pings on a regular interval), what kind of waves would work for it?
what waves are out there? (non physical)?
2014-01-12 1:38 pm
回答 (1)
2014-01-12 1:52 pm
✔ 最佳答案
what do you mean
收錄日期: 2021-05-01 15:54:57
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20140112053839AAcWZK0