2
Say, I read something a while ago and I wrote it down because I thought it was pretty funny. Let me look at my notes (snickering while trying to find that exact note among many!) Ahem! “I am a level five Vegan – I don’t eat anything that casts a shadow.” Hahahahahahaha, can you imagine? Hahahahahahaha.

1
Dude! Get a grip.

2
(sobering up) That was from the Simpsons, apparently. At least that is what I read.

1
Well, all I can say is you have a weird sense of humor, but I have to admit I like it too. Now about our diet and what are we, Vegetarian, Vegan, Flexitarian, Whatever?

2
Well, let’s just say we haven’t exactly solved all our problems with protein and our blood sugar thing which are like totally related and state we are ‘Relaxatarian, moving in a (hopefully) healthy direction’ and move on to the topic for today. Swamp Coolers and Windcatchers! So exciting.

1
And you think people actually want to know that Egypt used a form of swamp cooling way, way back, like BC times? That they hung wet reeds in a window facing the prevailing wind and that helped evaporate the water, which is cooling. China had water wheels indoors and stuff too, way long ago.

Heat evaporates water so the opposite is cooling. Good old Newton! For every action there is an equal and opposite reaction. Now we do that with a pump, some pads built into a box with a fan. It’s way cheaper than refrigerated air, assuming your humidity is low.

As for windcatchers, Iran had them forever and if one would build a chimney and have its opening funnel air into a house (facing the prevailing winds) with an apporpriate exit point, that would cool too. And introducing water adds to it. Also, if one were to build the chimney remotely and run a flue underground and into the house, it would cool a bunch, as our earth is significantly the same temperature once you get down about, oh, 12 feet, about 65 degrees F (18.3C). Ever been in a totally underground basement of an average house in July? Did your grandparents house have a root cellar? I rest my case.

2
Yeah, even as a kid I didn’t understand why we didn’t blow some of that cool air upstairs, come summer. Just as usual thinking, I am sure (sighing heavily for the basic inertia of the average human brain-like substance). (Newton again and inertia!)

Of course, some of us like what the Spanish missions did in the Southwest US; adobe walls, open windows at the bottom at night in the summer and a vent at top. Close the windows come morning and the building was cool all day. It’s the chimny effect, though there is some fancy name for it, because it also uses faster moving air (prevailing winds) across the vent to lower pressure which draws more warm air from inside (based on Newton’s laws!!!!) and amplify the efficacy.

1
Da Vinci and Newton, they were Renaissance men in the true sense of the word. Newton just doesn’t get enough credit because he didn’t paint The Last Supper even though he made the first reflecting telescope and wrote extensively on biblical chronology and alchemy and was a member of parliament. If he would have just picked up a brush (but sadly not so much). Yet much of our modern science and math is based on his work.

2
So I think you wanted to write about the Magnuss effect today? Well, tough beans, haha. I mean, doesn’t everyone already know what happens if you backspin a ball and drop it from 400′? I should think so!

1
Look, not everyone knows that backspin produces lift (or drag) and the ball goes sailing away as well as down, that a rapidly backspinning cylinder produces more lift than an airplane wing. That the main reason we don’t use that on airplanes is that you have to power the spin and if that motor stops you drop like a rock (plus some stability issues). No gliding to land!

Why don’t you publish the photo that started this all? You were simply trying to confirm that advertising¬†‘air conditioned’ must have been the 50’s/early 60’s because that is when it became commonly available for businesses and after it was more likely assumed, so not stated.

2
Yeah, about a zillion years after it was invented, really. Strange, that some few had it as early as around 1920 and even before and the guy’s last name who made it work right was Carrier . As I said earlier, so exciting! And –

1
(interrupting) Just publish the stupid picture, OK?

2
Uh, OK.

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