Try this. Open your mouth wide and take a deep breath. Then, with mouth still open, close your teeth and take a deep breath.
Report back.
Without a sophisticated lab or flow cage, we’re still able to make assumptions on life experiences. We know air doesn’t flow good through solid material, if it did kubota would have just put a metal sleeve on the filter without the holes.
Did none of you ever take your toys apart as a kid? My room was just a mess with disassembled toys, some hooked to each other. I remember when I figured out that a small electric motor was also a generator. Thought I was big time hooking up a motor to another to spin it to light up a small led. Lol.. my parents thought I was going to be a genius, lol, so one Christmas they got me a Vic 20. I was about 10. I’m sure some of you know what it is. Within a week it was in pieces. I had no idea what computer was or why you’d want to sit in front of it, but was curious how the keys were spring loaded.