Lurker_IV
Lurker_IV t1_jcuiv3a wrote
Reply to TIL Crush Syndrome happens when the human body experiences severe skeletal muscle trauma under constant pressure for a long time resulting in shock and kidney failure; an example is a human trapped under a building in an earthquake. by ChiggaOG
This sounds like a different name for Rhabdomyolysis
https://en.wikipedia.org/wiki/Rhabdomyolysis
Rhabdomyolysis (also called rhabdo) is a condition in which damaged skeletal muscle breaks down rapidly.[6][4][5] Symptoms may include muscle pains, weakness, vomiting, and confusion.[3][4] There may be tea-colored urine or an irregular heartbeat.[3][5] Some of the muscle breakdown products, such as the protein myoglobin, are harmful to the kidneys and can cause acute kidney injury.[7][3]
The muscle damage is mostly caused by a crush injury, strenuous exercise, medications, or a
Lurker_IV t1_jbkt0a3 wrote
Reply to comment by PuddyVanHird in Is there a fertile creature with an odd number of chromosomes? by TheBloxyBloxGuy
Producing and carrying offspring is far more costly and risky than just producing sperm. One excellent example of this is flatworm penis-fencing where they battle to impregnate their opponent while avoiding it themselves.
Some point in our evolutionary history as mammals some mutation made it impossible for one side to get pregnant at all and only able to impregnate others thus freeing up resources for males to focus on getting as many females pregnant as they could. This strategy also carries the danger of relying entirely on others to reproduce. If females develop the ability to select only female offspring and not males then this can eliminate y-chromosomes entirely, something that has been theorized to have happened more than once already in our evolutionary past until a y-chromosome able to overcome this selectivity happened.
There are entire books on the topic of male-female reproductive strategies and cost-benefit analysis at the genome level which I won't go into as I don't have a teaching degree.
Lurker_IV t1_jbcrg1x wrote
Reply to Egypt archaeology: Dig unearths smiling mini-sphinx which may represent Claudius by egg_static5
I don't see any water weathering on that sphinx enclosure. That disproves all the sphinx is super old theories!
Science!
Lurker_IV t1_jac7fd6 wrote
Very interesting! I was first confused because running electricity creates its own magnetic field so wouldn't running electricity through the material drop its own resistance itself?
Turns out the paper addresses that issue: yes it does, but it takes several minutes to force the current through the material. So the external magnetic field reduces that time from minutes to 0 time. There are so many ways this material could be used for cool things.
Lurker_IV t1_j6aqvd0 wrote
Reply to TIL of the Medieval candle time clock, before electricity, a nail was placed at certain places on the lengths of the candle and people would hear the nail hit the ground when lit, letting them know a certain amount of time had passed. by FlashyBehind
I also remember reading that in Japan they also used incense sticks to measure time. 1 stick = 1 hour kind of thing. Just flameless candles when you think about it but still workable.
Lurker_IV t1_j57feep wrote
Reply to comment by jeanleonino in TIL that during the Edo period in Japan Catholicism was outlawed and groups of Japanese catholics had secret rooms in their houses and they made statues of the Virgin Mary and other saints that would look like Buddhist statues by jeanleonino
Fun history tidbit: the Japanese used the magic mirror trick of using reflections to expose microscopic flaws in microchip manufacturing. The engineers credited magic mirrors as the inspiration for their invention.
Lurker_IV t1_j575q05 wrote
Reply to comment by jeanleonino in TIL that during the Edo period in Japan Catholicism was outlawed and groups of Japanese catholics had secret rooms in their houses and they made statues of the Virgin Mary and other saints that would look like Buddhist statues by jeanleonino
Do you know about the 'magic mirrors' Japanese christians used to hide their faith?
https://www.kyotojournal.org/renewal/the-magic-mirror-maker/
Lurker_IV t1_j29j0d0 wrote
Reply to comment by StandardSudden1283 in How fast does the Milky Way spin? How far does Earth move through space in a year? by Sabre-Tooth-Monkey
If you get too close to the wrong black hole then you become its accretion disk...
Lurker_IV t1_j0b5g7s wrote
Reply to comment by onehandedbraunlocker in TIL Korea has soy sauce older than USA by SmashScrapeFlip
American grapes were a popular and common native food. They might not have had a specific wine industry (as far as we know) but they were as domesticated a food crop as corn. Thousands of years of traditions on both sides.
Lurker_IV t1_iynqmto wrote
Reply to comment by clericalclass in Gold from ancient Troy, Poliochni and Ur had the same origin by Darth_Kahuna
You say that jokingly, perhaps, but there is probably some truth to it.
I think the gold likely came from across the Atlantic ocean from the Americas. I think ancient civilizations had nearly global trade networks and traded gold and other metals all the way from the Americas to Egypt.
Lurker_IV t1_irqmf93 wrote
Reply to comment by I2ichmond in Why, when you continue to burn ash, do the ashes eventually change from black to white? by genitalwaffles
Charcoal is pure carbon. The heat of fire without any available oxygen in the mound vaporizes any volatile compounds and burns them off leaving the carbon.
Charcoal fires can burn up to 100-degrees hotter than wood fires, iirc, which is why it is needed for metalworking.
Lurker_IV t1_irqlulr wrote
Reply to comment by alucardou in Why, when you continue to burn ash, do the ashes eventually change from black to white? by genitalwaffles
"ium" in the suffix that denotes a material. More than half of the elements end in 'ium'.
Lurker_IV t1_je5m9fj wrote
Reply to comment by Aye_Eye_Captain in TIL The oldest musical instrument in the world, a 60,000-year-old Neanderthal flute, is made from the left thighbone of a young cave bear. by gonejahman
They had sewing needles so they had tailored clothing. And musical instruments so they had music. They had bigger brains than us so they were probably smarter. They must have had art of some kinds.
More human than human us back then probably. Shame they aren't around anymore.