"TIL when snowflakes hit water they create a screeching sound too high for humans (but not some sea animals) to hear. When a flake hits the water, an air bubble is released that oscillates in the 50-200 khz range well above a human's range. Snow hitting water can increase underwater sound by 30 db."
0
1.
Howard 1 year 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 1 year ago
#23 - www.youtube.com/watch?v=rRi8LptvFZY
-3
3.
Midge 1 year 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 1 year 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