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Sherlock Ohms

The Lightning Came With a Crash

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Ann R. Thryft
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Re: And nobody noticed...
Ann R. Thryft   9/22/2014 11:34:23 AM
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jgundie, thanks for telling us that. I always find it interesting why some people notice certain patterns and others don't, and the circumstances surrounding what brings those patterns to the forefront.

jgundie
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Re: And nobody noticed...
jgundie   9/18/2014 5:02:57 PM
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Hi Ann,

Just noticed the post again.

Its not clear from the write up why no one noticed the lightning but thinking about it I realized that "99.9%" of lightning strikes caused "no" problem.  The data got messed up but it was caught by the program and the data was sent again.  So only "once in thousand times" did the lightning strike hit the narrow time window that caused corrupted data to be recieved.  A crash would occurred only once every month or so which made the correlation harder and probably it happened at night!

 

This made me wonder how I figured it out(:|).  Maybe a summer on a lookout in Idaho's primitive area helped.  More recently I got envolved in analyzing the effect of lightning striking a satelite fueling facility and currents in a grounding line going through the satelite and causing some damage.

 

Jim

 

TJ McDermott
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Re: And nobody noticed...
TJ McDermott   10/25/2013 2:22:33 PM
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Any substantial building could buffer the occupants.  I'm minded of several I've worked in, from office buildings to concrete-roofed factories.

Ann R. Thryft
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Re: And nobody noticed...
Ann R. Thryft   10/21/2013 1:04:00 PM
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Thanks for that insight, Nancy. I agree about the mix of disciplines and awareness needed for test engineers. The same is clearly needed for engineers in charge of an operation like this one.

Nancy Golden
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Re: And nobody noticed...
Nancy Golden   10/17/2013 8:00:20 PM
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I think part of that depends on your discipline, Ann. As a test engineer it is critical to have a high awareness of both hardware and software operation...if you only think about one or the other you won't get very far. However, most folks do seem to be a bit better at one than the other - I guess that might be a function of how our brain works...while my husband and I do both hardware and software - he has more hardware expertise and I have more software expertise so when we do projects together he typically does the HW and I do the SW. So of course whenever there is a problem - it must be the HW :)

Ann R. Thryft
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Re: And nobody noticed...
Ann R. Thryft   10/17/2013 6:44:27 PM
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I find it mind-boggling that the engineers couldn't make the connection, and so many times. But sad to say, I have known many software people who don't seem, uh, connected to the physical world and how it works.

Charles Murray
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BSOD
Charles Murray   10/10/2013 3:18:28 PM
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Ah yes, Nancy, the old blue screen of death. We don't seem to hear about that anymore.

Charles Murray
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Far-away lightning strikes
Charles Murray   10/10/2013 3:16:55 PM
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Amazing story, Jim. Talking to engineers at Littelfuse, I've heard that lightning-strikes can cause problems from as far away as a half mile or more. The effects of lightning can really be surprising.

William K.
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Re: Natural considerations, and exceptions
William K.   10/8/2013 4:17:14 PM
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Yes, Nancy, the "BSOD" syndome is one of the indicators that an attempted action was "outside of the realm."

AnandY
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Gold
RE: Nobody Noticed
AnandY   10/8/2013 8:16:59 AM
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It's unbelievable that for 3 months the Computer Programming guys never noticed that the computers crashed only during thunderstorms. Surely, they should have. It's funny how technology makes us forget about nature. This proves how much the two are largely related.

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