DaveC426913's latest activity

https://allquakes.com/earthquakes/quake-info/22662542/quake-felt-Jan-28-2026-Near-Toronto-Ontario-Canada.html?fbclid=IwY2xjawPnI3BleHRuA2...

Something like a reverse osmosis membrane. These RO machines work by using pressure to push water molecules through a membrane that does...

I was under rhe impression in KSR's technology, the CO2 doesn't build up or saturate the mask filter; it merely blocks its passage...

This is about the physics of a molecular sieve, but since it is a fictional technology, I'm obliged to put it in Sci-fi. It has been a...

I linked to it with the word 'here'. I guess I could have been a little clearer.

This is real by the way, not faked. It's in Nova Scotia...

Might as well repost this one here.

Man I love being surprised by nature. Name this South American FLYING animal that lives in colonies in CAVES, emerges at night in...

Thanks. Fixed it.

This is actually wrong, by the way. A Mercator projection is 180° high and 360° wide, so twice as wide as it is high. This is square, so...

Take off, eh?

A two-parter: 1. Q: What is the name of the tenth reindeer? A: Olive. As in: "Olive the other reindeer, used to laugh and call him...

I wonder if it's significant that the railing is symmetric, like a conversation chair ("tête-à-tête").

Exactly correct. My point was that virtually any kind of grouping (though not all) is abstract and created by humans. Like the monster...

Huh. I notice the other posts of this same pic have very different attributions and timelines. Mine was from 'Dull Men’s Forum' But...