Today We Learn!

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

Bree 1 year ago

#23 - www.youtube.com/watch?v=rRi8LptvFZY

-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

Juanita 1 year ago

#23 And "Coke", and "Kleenex"...

"TIL Very little of Franz Kafka's works were published during his lifetime and he burned 90% of his work. Works like The Trial and The Castle were saved when the executioner of Kafka's will ignored Kafka's request to have his remaining works destroyed."