Rivet Amber
rivetamber.bsky.social
Rivet Amber
@rivetamber.bsky.social
Math, Physics, Computer hardware & Nuclear weapons history.
Reposted by Rivet Amber
Hello! I have written a short article about the atomic bombings, and the anniversary that I think gets overlooked — when Truman *stopped* further atomic bombing, and why he did so. thebulletin.org/2025/08/trum...
Truman never ordered the use of the atomic bombs—but he did order atomic bombings to be stopped
On the 80th anniversaries of the Hiroshima and Nagasaki bombings, President Truman deserves credit for the first use of the atomic bomb in war. But he also deserves some credit for the fact that atomi...
thebulletin.org
August 11, 2025 at 1:24 PM
Reposted by Rivet Amber
#Intel refreshed the Advanced Performance Extensions (#Intel #APX) Architecture Specification to 7.0:
cdrdv2-public.intel.com/861610/35582...
APX_NCI_NDD_NF = CPUID.(EAX=0x29,ECX=0x00):EBX[0]
July 30, 2025 at 9:21 AM
Reposted by Rivet Amber
For this 80th anniversary of the Trinity test, I was able to get a much higher-resolution version of the map that was created of the test's fallout contours, on July 21, 1945.

For full resolution (20MB): files.nuclearsecrecy.com/1945-07-21-t...
July 16, 2025 at 4:25 PM
Reposted by Rivet Amber
Over the last decade or so I have occasionally been able to restore redacted pieces of the Manhattan District History, esp. the Los Alamos – Technical volume, as I found excerpts in other misc. places. I've recently updated the copy of it that I put up at Archive.org: archive.org/details/Manh...
April 22, 2025 at 12:50 PM
Reposted by Rivet Amber
I realized recently that a number of the descriptions of the target selection for the atomic bombings get the progression a bit wrong. What follows is what I think is the most complete timeline of changes to the target list through the atomic bombings themselves that is available. (1/...)
January 4, 2024 at 5:25 PM
Reposted by Rivet Amber
The deal seems to be that people can largely live like in pre-pandemic times as long as we accept getting miserably ill maybe twice a year (especially during family holidays), accept heightened risks of long-term health problems, and let old/vulnerable folks die. Doesn’t seem like a good deal to me.
December 27, 2023 at 2:08 PM