4 ms·
More on the latter point: https://en.wikipedia.org/wiki/Low-background_steel https://en.wikipedia.org/wiki/Low-background_steel The same effect was also used i
by hdkrgr 9y ago
More on the latter point: https://en.wikipedia.org/wiki/Low-background_steel https://en.wikipedia.org/wiki/Low-background_steel
The same effect was also used in understanding brain development by looking at Carbon isotopes in brains of people born before WW2 to determine which cells were formed when.
- LMYahooTFY 9y agoThat's fascinating to me, I didn't realize anthropogenic radiation levels were significant enough to offer a control for molecular examination of human brains in the general population. It's almost a bit unnerving.
- jacobolus 9y agoIt’s not “radiation levels” per se. Nuclear bomb testing in the mid 20th century dramatically increased the amount of carbon-14 in the atmosphere, which has subsequently been gradually declining. https://en.wikipedia.org/wiki/Carbon-14#Origin https://en.wikipedia.org/wiki/Carbon-14#Origin