[ARCHIVED THREAD] - OK GD experts explain THIS one. (Page 1 of 2)
Posted: 12/13/2015 12:04:40 PM EDT
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I was using my cars nav last week.
Kid wanted me to charge his kindle with the car's USB port. plugged it in. First thing I notice is the cars clock (which is GPS based) starts losing sync, by like 10 min then then nav goes apeshit, I am on I-75 but the map showed me traversing wild countryside, no roads. The next day when the NAV rebooted it was fine. |
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Back in the very early days of manned space flight they televised all the launches. My high school class was at my house watching one of these when something malfunctioned in the capsule. Mission control told the astronauts to cycle it. They did and it still didn't work so control said to cycle it again and they did a couple times.
Finally in frustration the astronaut said what do we do now. Control said to cycle it and the astronaut in a somewhat perturbed voice said I have been cycling it. Control said no I said CYCLE It. Over the radio you hear a loud bang and the astronaut says Ah, now it is working. Maybe you just need to CYCLE it. |
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Quoted:
Trust the instruments..but not GPS. I would say this is a divide by zero error. Quoted:
Quoted:
That is a demonstration that fancy computerized electronic gadgets are no substitute for thinking. Learn to see, not just look. I had an entertaining GPS foul up about a month ago on a trip to a town near Chester, Illinois. The route indicated was correct until I left I-55, then the computer changed the route to proceed down Illinois 3 to Cairo, then turn around on I-3 back to the road on the route on the East side of I-3 for almost an extra 100 miles. It corrected as soon as I left I-3 on the correct route. In the case of the display here, it's most important for the average user to understand that the displayed altitude is not correct, and can't possibly be correct. The next step is to have some inkling that it's probably related to the capture of only three satellites. That last part is interesting as I can't remember the last time I used a consumer GPS receiver that was tracking only three or even four satellites, generally the number is 10 or 12. That is probably a flat land number, however. |
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Oxygen deprivation - the O2 masks never fell out of the overhead compartment. |
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Quoted: Back in the very early days of manned space flight they televised all the launches. My high school class was at my house watching one of these when something malfunctioned in the capsule. Mission control told the astronauts to cycle it. They did and it still didn't work so control said to cycle it again and they did a couple times. Finally in frustration the astronaut said what do we do now. Control said to cycle it and the astronaut in a somewhat perturbed voice said I have been cycling it. Control said no I said CYCLE It. Over the radio you hear a loud bang and the astronaut says Ah, now it is working. Maybe you just need to CYCLE it. I lost.  |