Another physics lesson, today you’ll hear an example of the so-called Doppler effect. Every few days this stupid jerk comes around to hoot at someone in our neighborhood.

If an aircraft enters supersonic velocity, it breaks the sound barrier and causes a sonic boom. Most of the noise is rather infrasonic, and you feel it more than you hear it, the actual bang is not that loud. However the noise can cause people to be frightened. I am living in an area where…

Yeah, another boring attempt to make something useful with Elten’s blogging platform. So lets start off with some scary noises outside my house. Recorded june 12th, 2022 around 1:40 am in the morning. Beech martens are nothing special here, but it is the first time I was able to capture their noises directly under my…