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Lightning strike kills 16 taking selfies

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Red Squirrel said:
Used for clocking between central offices. Lot of stuff like T1s and fibre optics etc need to keep in sync at two end points. Only some of the major offices need the actual antenna though as the clocking signal can be sent to the others through dedicated circuit. (usually a fibre I think).
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Eh? Shouldn't they sync to atomic clocks as opposed to GPS?
 
Scarpozzi said:
It was a startling realization that even a poor person in a 1st world country isn't really poor....and in many cases, they're just worthless because they aren't really here.
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I had a social studies teacher in IIRC 8th grade who was unusual. I remember one thing she said to the class only. She announced to the entire class (probably some 30 kids) that none of us had ever in our lives "been hungry." I don't think she elaborated, just planted that seed in our minds for us to think about. Well, I've given that thought at various times in my life. Of course, everyone gets "hungry," and most people do every day. But most people never experience the onset of starvation. I certainly haven't. I've been poor (lived below the poverty line for a long time), but was never close to approaching anything like starvation. You might say I loved low on the hog! I also remember one person saying (I think it was a black American) that you have to be stupid to be hungry in America. Many years ago.
 
Muse said:
I had a social studies teacher in IIRC 8th grade who was unusual. I remember one thing she said to the class only. She announced to the entire class (probably some 30 kids) that none of us had ever in our lives "been hungry." I don't think she elaborated, just planted that seed in our minds for us to think about. Well, I've given that thought at various times in my life. Of course, everyone gets "hungry," and most people do every day. But most people never experience the onset of starvation. I certainly haven't. I've been poor (lived below the poverty line for a long time), but was never close to approaching anything like starvation. You might say I loved low on the hog! I also remember one person saying (I think it was a black American) that you have to be stupid to be hungry in America. Many years ago.
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They use generators in places like Sierra Leone for electricity.

How I learned this little bit of knowledge? Well, I tried to sell a generator and one dude who was seriously interested but decided it was noisy had a little talk with my mom and he mention that. Now, whether he was actually going to export it to Sierra Leone or use it in a suburb area that is tight on the noise code, only he knows.

Googling leads to "numbers" stating about 15% of the urban population and 2% of the rural population have electricity.
 
sdifox said:
Eh? Shouldn't they sync to atomic clocks as opposed to GPS?
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The GPS satellites basically act as the atomic clock. Having an actual local one would be too expensive. I imagine those go for millions, if billions. I think you need specially trained people to work on/around those as well. The GPS receivers do have a built in quartz clock but that can drift over days if GPS becomes unavailable. Start to get weird network issues. Basically need like <1ms latency. Not sure how the GPS latency is accounted for I guess there is some self correction built in by using multiple satellites.
 
Red Squirrel said:
The GPS satellites basically act as the atomic clock. Having an actual local one would be too expensive. I imagine those go for millions, if billions. I think you need specially trained people to work on/around those as well. The GPS receivers do have a built in quartz clock but that can drift over days if GPS becomes unavailable. Start to get weird network issues. Basically need like <1ms latency. Not sure how the GPS latency is accounted for I guess there is some self correction built in by using multiple satellites.
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Err latency on landline has got to be better than satellites.
 
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