"TIL sleep helps clean our brain. Or in the words of the journal Science, “Observations showed that when mice sleep, channels between neurons in their brains expand, allowing cerebrospinal fluid to flush out detritus, such as proteins that in human beings are associated with Alzheimer’s disease.”"'
0
1.
Howard 2 year s ago
The Chinese sword has fascinating chemistry.
from Wikipedia
Amount of elements by percentage
Part examined
Copper Tin Lead Iron Sulfur Arsenic
Blade 80.3 18.8 0.4 0.4 trace trace
Yellow pattern 83.1 15.2 0.8 0.8 trace trace
Dark pattern 73.9 22.8 1.4 1.8 trace trace
Darkest regions 68.2 29.1 0.9 1.2 0.5 trace
Edge 57.3 29.6 8.7 3.4 0.9 trace
Central ridge 41.5 42.6 6.1 3.7 5.9 trace
from Wikipedia
Amount of elements by percentage
Part examined
Copper Tin Lead Iron Sulfur Arsenic
Blade 80.3 18.8 0.4 0.4 trace trace
Yellow pattern 83.1 15.2 0.8 0.8 trace trace
Dark pattern 73.9 22.8 1.4 1.8 trace trace
Darkest regions 68.2 29.1 0.9 1.2 0.5 trace
Edge 57.3 29.6 8.7 3.4 0.9 trace
Central ridge 41.5 42.6 6.1 3.7 5.9 trace
0
2.
Bree 2 year s ago
#23 - www.youtube.com/watch?v=rRi8LptvFZY
-3
3.
Midge 2 year s ago
#7 sure. a lot of "Italian" dishes can be attributed to being created in the US during the depression like spaghetti. Italians didn't do much after their renaissance. covid did them a favor
1
4.
Juanita 2 year s ago
#23 And "Coke", and "Kleenex"...
from Wikipedia
Amount of elements by percentage
Part examined
Copper Tin Lead Iron Sulfur Arsenic
Blade 80.3 18.8 0.4 0.4 trace trace
Yellow pattern 83.1 15.2 0.8 0.8 trace trace
Dark pattern 73.9 22.8 1.4 1.8 trace trace
Darkest regions 68.2 29.1 0.9 1.2 0.5 trace
Edge 57.3 29.6 8.7 3.4 0.9 trace
Central ridge 41.5 42.6 6.1 3.7 5.9 trace