It can be a nice breeze, or a destructive storm, but either way wind is just moving air. And moving air is just moving molecules.
In an explainer for kids that's actually pretty helpful for grown-ups, too, Matt Shipman reminds us that the air around us isn't totally weightless. It weighs something, because molecules all weigh something:
They don't weigh very much (you couldn't put one on your bathroom scale), but their weight adds up, because there are a LOT of molecules in the air that makes up our atmosphere. All of that air is actually pretty heavy, so the air at the bottom of the atmosphere (like the air just above the ground) is getting pressed on by all of the air above it. That pressure pushes the air molecules at the bottom of the atmosphere a lot closer together than the air molecules at the top of the atmosphere.
And, because the air at the top of the atmosphere is pushing down on the air at the bottom of the atmosphere, the air molecules at the bottom REALLY want to spread out. So if there is an area where the air molecules are under high pressure (with a lot of weight pushing down), the air will spread out into areas that are under lower pressure (with less weight pushing down).
Read the full story at Carolina Parent
Image: wind, katarinahissen, a Creative Commons Attribution Share-Alike (2.0) image from mararie's photostream
When Zoe Stavri woke up with a yeast infection, she had a strange and intriguing idea: what about adding some of her vaginal candida to sourdough starter?
Nick Sousanis, who delivered his doctoral dissertation in comic book form, has a new comic in the current Nature magazine, explaining the last 25 years’ worth of climate talks, as a primer in advance of the Paris climate talks next week.
Randall “XKCD” Munroe’s Thing Explainer: Complicated Stuff in Simple Words arrives in stores today: it combines technical diagrams and wordplay in pure display of everything that makes XKCD brilliant and wonderful in every way.
Today and tomorrow only we are offering an additional 15% off the entire Boing Boing store (some exclusions may apply). Simply use coupon code: BLACKFRIDAY at checkout! Below are a few of our favorites from the store: First Generation Lytro 16GB Camera: The First Consumer Camera to Capture the Entire Light FieldAdobe Training Videos: Lifetime Subscription: 6,000+ Adobe […]
Today only in the Boing Boing Store we are offering an extra 15% off of the below VPN deals just use coupon code: VPN15 at checkout. proXPN VPN: Premium Lifetime Subscription Surf the web with ultimate peace of mind – both at home and on the road – over proXPN’s fully-encrypted, lightning-fast servers. Your lifetime premium subscription […]
These knitted gloves are here to save the day (and your hands) with an ultra-comfy, double-layer that will allow you to stay warm and use your phone. Now you can take photos on the fly, text, Tinder, and more without letting freezing temperatures get in your way. Plus they work with all touchscreens, so no […]