Science Art: Chandra X-ray Observatory close-up of the core of the M87 galaxy, by NASA/CXC/Villanova University/J. Neilsen
Click to embiggen
This is not the famous Event Horizon Telescope (EHT) black hole image that you’ve probably seen by now. It’s a visualization of some of the data that helped make that image.
This is a picture of the center of the M87 galaxy taken by the Chandra X-ray Observatory, a telescope that “sees” X-rays. It’s showing, among other things, a jet of energy emerging from the area around the black hole – basically spewing from the pole of the black hole near the speed of light.
A horological device called a “verge escapement” (on the bottom) with a balance wheel (on the top) from a pocketwatch.
An “escapement” is the thing that makes a watch tick – it advances in set intervals, then pauses, then advances, then pauses again.
From the image description on Wikimedia Commons:
The verge escapement, the oldest mechanical escapement, was used from the 13th century, and was the first escapement used in clocks and watches. It consisted of a vertical rod, the “verge”…
Mm. Mighty mite.
From a this book of mites.
Luckily for us, these mites (the Oribatidae) aren’t parasitic. They live in dirt (which they turn, like earthworm), and eat lichens and fungus. They do serve as a host for tapeworms, so try not to eat them when you meet them.
As far as I can tell, this specific mite, Cepheus bifidatus, hasn’t been studied very much. At least, it’s sort of hard to find descriptions online. People do get very excited to find some of their…
“Lays eggs on larva boring in wood.” Add just one comma and that comes across as harsh criticism, but it’s really meant as a compliment.
This is from an illustrated fact-sheet of Beneficial Insects that I found in the Biodiversity Heritage Library. It’s a poster from the WWII era that might as well be labeled “THESE ARE YOUR FRIENDS. DO NOT ATTACK THESE INSECTS.”
As propaganda, I suppose it’s still pretty effective. At least I found them all rather handsome – but none…
Science Art: Hypocaustum excavated behind the old city of Rottenburg am Neckar , by Eduard von Kallee.
An ancient Roman central heating system – hot water would be flooded through the basement, and the floors would warm up. “Hypocaust” was the name of the system. This particular one, painted in 1884, was built in the city of Rottenburg am Neckar, which the Romans called Sumelocenna when they lived there. The city might have gotten its “rotten” name because of an earlier version of the word “rotten,” which also meant “ruined” – the Germans built their city over the ruins of th…
Science Art: Four views of the Alvan Clark & Sons workshop..., from Scientific American, Sep. 24, 1887
Here, an astronomical family is building a 36-inch refractor telescope known as the Great Lick Refractor in the 1880s. It’s named for James Lick, an eccentric entrepreneur who financed the observatory. Please, don’t lick the telescope.
The lenses were fabricated in France, then shipped to Boston where Alvan Clark and his sons ground and polished the glass, built the telescope to house the lenses, then set them in place in a new observatory in Harvard College. They had to wait to put the fini…
Please hold for connection.