MPs warn over nuclear space bombs and solar flares
43 replies, posted
Really? Not being a dick here, I've genuinely forgotten, but I thought it took a lot more than a few feet of lead to cut Gamma ray penetration even just to 50% or am I thinking concrete? v:v:v
And I thought Faraday cages were only able to stop one wavelength or so depending on how tight the wire mesh was.
Man it's been like a good two years since I done any proper physics :v:
And then nothing happened.
[QUOTE=Pierrewithahat;34861154]Really? Not being a dick here, I've genuinely forgotten, but I thought it took a lot more than a few feet of lead to cut Gamma ray penetration even just to 50% or am I thinking concrete? v:v:v
And I thought Faraday cages were only able to stop one wavelength or so depending on how tight the wire mesh was.
Man it's been like a good two years since I done any proper physics :v:[/QUOTE]
That must be concrete, lead is pretty dense and effective
Well, yeah, they're called Faraday cages because usually you'd use a mesh cage
but the distance between lead atoms in a solid structure is pretty close so it's easier than worrying about pesky particles with tiny wavelengths
lead isn't the best material for EM shielding and you should ground it, but if you're concerned about the effects of a possible massive EM event then you should probably encase your entire house in a meter of lead underground
Sounds like MW2 to me.
The USA had set off a nuke in space look up Operation Starfish Prime
So if/when this happens, I should scramble to make a metal mesh cage around all my electronics?
[QUOTE=Mr. Smartass;34868869]So if/when this happens, I should scramble to make a metal mesh cage around all my electronics?[/QUOTE]
Considering EM waves travel at the speed of light you'd have to be quick about it.
[QUOTE=davethestoner;34864779]The USA had set off a nuke in space look up Operation Starfish Prime[/QUOTE] Captain price did it too!!!!!! :downs:
[QUOTE=Rents;34869228]Considering EM waves travel at the speed of light you'd have to be quick about it.[/QUOTE]
welp, might aswell do it now eh?
[QUOTE=Rents;34869228]Considering EM waves travel at the speed of light you'd have to be quick about it.[/QUOTE]
Well yes, but wouldn't we have some sort of warning period before it happens?
And doesn't light take like 10 minutes to travel from the sun to us?
[QUOTE=Mr. Smartass;34871452]Well yes, but wouldn't we have some sort of warning period before it happens?
And doesn't light take like 10 minutes to travel from the sun to us?[/QUOTE]
...yeah but if a nuke is detonated in space it's done pretty much at the edge of the atmosphere, it would only take a few seconds or so for the gamma rays to start playing havoc with your DNA and generally shitting all over your electronics.
And the warning period for a nuke taking off and then detonating would be about 10 minutes total.
In the computer world, we suffer Cosmic Failures all the time. They are all equally useless.
I know someone who this month had a server which had well over two years of uptime just one day out of the blue spit out:
[code]Feb 8 14:24:23 6D:speedo sn0log: The following are messages stored in the flashlog from a previous system boot.
Feb 8 14:24:23 6D:speedo sn0log: Flashlog for /hw/module/001c01/node/hub/mon
Feb 8 14:24:23 5D:speedo sn0log: C Fatal: HARDWARE ERROR STATE:
Feb 8 14:24:23 5D:speedo sn0log: C Fatal: + Errors on node Nasid 0x0 (0)
Feb 8 14:24:23 5D:speedo sn0log: C Fatal: + IO Board in /hw/module/001c01/io widget: 0xf serial:
Feb 8 14:24:23 5D:speedo sn0log: C Fatal: + Bridge ASIC errors:
Feb 8 14:24:23 5D:speedo sn0log: C Fatal: + Bridge interrupt status register: 0x5000
Feb 8 14:24:23 5D:speedo sn0log: C Fatal: + INT_N status: 0x0
Feb 8 14:24:23 5D:speedo sn0log: C Fatal: + 12: PCI device reported parity error
Feb 8 14:24:23 5D:speedo sn0log: C Fatal: + PCI Error Upper Address Register: 0xb360001
Feb 8 14:24:23 5D:speedo sn0log: C Fatal: + PCI Error Lower Address Register: 0x520bb680
Feb 8 14:24:23 5D:speedo sn0log: C Fatal: + 14: PCI Bridge detected parity error
Feb 8 14:24:23 5D:speedo sn0log: C Fatal: + PCI Error Upper Address Register: 0xb360001
Feb 8 14:24:23 5D:speedo sn0log: C Fatal: + PCI Error Lower Address Register: 0x520bb680
Feb 8 14:24:23 5D:speedo sn0log: C Fatal: + IO Board in /hw/module/001c01/io widget: 0xf serial:
Feb 8 14:24:23 5D:speedo sn0log: C Fatal: + Bridge ASIC errors:
Feb 8 14:24:23 5D:speedo sn0log: C Fatal: + Bridge interrupt status register: 0x5000
Feb 8 14:24:23 5D:speedo sn0log: C Fatal: + INT_N status: 0x0
Feb 8 14:24:23 5D:speedo sn0log: C Fatal: + 12: PCI device reported parity error
Feb 8 14:24:23 5D:speedo sn0log: C Fatal: + PCI Error Upper Address Register: 0xb360001
Feb 8 14:24:23 5D:speedo sn0log: C Fatal: + PCI Error Lower Address Register: 0x520bb680
Feb 8 14:24:23 5D:speedo sn0log: C Fatal: + 14: PCI Bridge detected parity error
Feb 8 14:24:23 5D:speedo sn0log: C Fatal: + PCI Error Upper Address Register: 0xb360001
Feb 8 14:24:23 5D:speedo sn0log: C Fatal: + PCI Error Lower Address Register: 0x520bb680
Feb 8 14:24:23 5D:speedo sn0log: C Fatal: + Errors on node Nasid 0x1 (1)
Feb 8 14:24:23 5D:speedo sn0log: C Fatal: + IP35 in /hw/module/001c02/node [serial number MTA291]
Feb 8 14:24:23 5D:speedo sn0log: C Fatal: + BEDROCK signalled following errors.
Feb 8 14:24:23 5D:speedo sn0log: C Fatal: + BEDROCK PI 1 Error Interrupt Register: 0x100000
Feb 8 14:24:23 5D:speedo sn0log: C Fatal: + 20: CPU B received uncorrectable error during uncached load
Feb 8 14:24:23 5D:speedo sn0log: C Fatal: End Hardware Error State
Feb 8 14:24:23 5D:speedo sn0log: C Fatal: ++FRU ANALYSIS BEGIN
Feb 8 14:24:23 5D:speedo sn0log: C Fatal: No rules triggered: Insufficient data
Feb 8 14:24:23 5D:speedo sn0log: C Fatal:
Feb 8 14:24:23 5D:speedo sn0log: Timeout Histogram is empty.
Feb 8 14:24:23 5D:speedo sn0log:
Feb 8 14:24:23 5D:speedo sn0log: C Fatal: ++FRU ANALYSIS END
Feb 8 14:24:23 5D:speedo sn0log: C Fatal: PANIC: CPU 2: PCI Bridge Error interrupt killed the system
Feb 8 14:24:23 5D:speedo sn0log: C Fatal:
Feb 8 14:24:23 5D:speedo sn0log: Dumping to /hw/module/001c01/IXbrick/xtalk/15/pci-x/0/3/scsi_ctlr/0/target/1/lun/0/disk/partition/1/block at block 0, space: 0x2000 pages
Feb 8 14:24:23 6D:speedo sn0log: End of flashlog for /hw/module/001c01/node/hub/mon
Feb 8 14:24:23 6D:speedo sn0log: End of flashlog messages.[/code]
...and then locked up. He restarted the system and it's been running flawless since.
What happened was a random cosmic ray struck something in a chip the right way and flipped a bit.
That's not what a CME or nuke going off in space does though, it creates a massive electromagnetic field so powerful that it will actually create a charge in the wires of a computer and overload the system and burn it out.
That's why you need hardened electronics.
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