Look up just right, and this is what you’ll see.
From the “Sun In Time” page of the Solar Dynamics Observatory’s Atmospheric Imaging Assembly (AIA)
I found the site via Humanoid History.
Science Art: Oral Cavity and Paranasal Sinuses - Coronal View exhibit, from Our Body: The Universe Within
Someone went to the museum today. This has always been one of my favorite bits of human anatomy, the spirals inside our sinuses. Evolutionarily, they say they’re there to expose more wet membranes to the air, sticking to all the dust and pollen and stuff that would otherwise go into our lungs (and, incidentally, leaving those of us more sensitive to dust and pollen and stuff vulnerable to runny noses and nasal congestion).
Still, it’s an elegant shape. We walk around wit…
SONG: “Blood is Family”.
SOURCE: “Small Island, Big Experiment,” FiveThirtyEight Science, Oct 2016, as used in the post “Florida Keys voting on genetically-modified mosquito plan” (and the followup).
ABSTRACT: This is the first time in however many years (nine?) that I’ve been a whole month late with a song and penitential cover. But here’s a song in time for November. It’s about mosquitoes. As an adoptive parent, I don’t actually literally believe the chorus here, but…
Aren’t they the cutest little things?
These are kinds of Euglena, the weird little microscopic critters that are animals with plant-like characteristics – some of them can photosynthesize, despite swimming around with whip-like tails. The Trachelomonas also have hard shells, making them a little harder for less sunshiny critters to swallow.
This might look like a jet plane’s engine, but it’s really a thing to test jet planes – supersonic ones. It’s a really big fan (with wooden blades!) inside a wind tunnel at Langley Research Center.
Big wind from an old Sitka spruce.
The picture’s from NASA in The Commons.
This is a turbine – a “turbopropulseur” – used as an example of a “réducteur” – a reducing gear. The one end spins a lot more than the other end thanks to all the gears. Means a motor can make a propeller go around really fast… as long as it’s strong enough.
That’s the secret of the turboprop.
I found this image on Wikimedia Commons.