51–58 of 58 posts
Earlier quoted context omitted.
Is a UTC day a different length to a common solar day? At this level of pre soon leap seconds and even sidereal day difference makes no difference
Yes, but they probably mean "the next 72 hours from right now given in UTC".
Earlier quoted context omitted.
Yes but you have to be an astronout in the outer space without enough added protection for the increase of radiation. Or maybe some increased exposure for high altitude flights near the poles. Other than that earth's atmosphere would make it that not enough exposure will reach the surface of the earth. Well things would be different for indirect harm because of satellite and signal failures. They could even cause dis…
If we ever colonise Mars, will the colonies be more or less vulnerable to solar flares than Earth? Not that I know anything this subject, but my understanding is that Mars has a much thinner atmosphere than Earth, and no magnetosphere. Would that make solar flares more dangerous? Or would the colonists be protected by whatever habitat is protecting them from everything else on Mars? What about electronic equipment th…
Also protecting electronics would be much harder. Your ability to do anything except digging during these times will be limited.
Earlier quoted context omitted.
Yes but you have to be an astronout in the outer space without enough added protection for the increase of radiation. Or maybe some increased exposure for high altitude flights near the poles. Other than that earth's atmosphere would make it that not enough exposure will reach the surface of the earth. Well things would be different for indirect harm because of satellite and signal failures. They could even cause dis…
It's my understanding that a Carrington event would destroy the bulk of the electrical grid on the side of earth facing the sun at the time. But would be pleased to hear how I'm wrong!
Earlier quoted context omitted.
For a couple years I had a process running on a PC without ECC that simply filled a large buffer with a bit pattern that was 50% ones and 50% zeros, and then periodically scanned the buffer for changes. It never found a changed bit. I used a 2008 Mac Pro at work and a 2009 Mac Pro at home for several years. They had ECC memory. I would periodically check the RAM status and I never saw anything that said an error had…
A buffer is much too small to catch any errors, unless you dedicate more than half of your installed memory to it. Typical memory rates for a computer with only 8 to 32 GB of DRAM might be of at most a few errors per year when new. For some aged memory modules, after several years of use, the error rate can increase a lot and it can become noticeable. For myself this has been the main benefit of ECC, the ability to d…
A study done [1] at Google based on 2.5 years of observations of their servers, first published in 2009, found error rates from 25000-70000 errors per billion device hours per Mb. That would put the time Google was doing the study in the right era for when I did my test.
Based on that I would expect to see about 1 error per 40 hours in a 128 MB buffer if the buffer was on a Google server. I suppose that supports the theory that the data center environment is a lot more error prone than my home environment was.
Track the impacts on https://www.spaceweather.com/
Holy cow that's an insane website design. So, where exactly do I see the tracking? Is it below the grift of a 3D printed moon? Is it near the ads for casinos. Or maybe the mood rings? This isn't a bitch about ads. It's I honestly cannot easily find the actual information the site is supposedly hosting.
Earlier quoted context omitted.
Yes but you have to be an astronout in the outer space without enough added protection for the increase of radiation. Or maybe some increased exposure for high altitude flights near the poles. Other than that earth's atmosphere would make it that not enough exposure will reach the surface of the earth. Well things would be different for indirect harm because of satellite and signal failures. They could even cause dis…
It's my understanding that a Carrington event would destroy the bulk of the electrical grid on the side of earth facing the sun at the time. But would be pleased to hear how I'm wrong!
Earlier quoted context omitted.
Yes but you have to be an astronout in the outer space without enough added protection for the increase of radiation. Or maybe some increased exposure for high altitude flights near the poles. Other than that earth's atmosphere would make it that not enough exposure will reach the surface of the earth. Well things would be different for indirect harm because of satellite and signal failures. They could even cause dis…
It's my understanding that a Carrington event would destroy the bulk of the electrical grid on the side of earth facing the sun at the time. But would be pleased to hear how I'm wrong!