181–190 of 235 posts
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Expectation management is sometimes as important as the actual delivery.
It's pretty much what you do in any successful enterprise. Under promise, over deliver.
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How is this? According to the International System of Units, a minute is 60 seconds.
Leap seconds.
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NASA has numerous programs running for this length of time. One of the people working on Voyager showed up at my grad school to get a degree between Uranus and Neptune. NSF, too. The VLA opened in 1978 and the first data recorded by it can be reduced by the current radio astronomy analysis software. In fact the software data format developed for the VLA (FITS) is now popular with high-end camera people... 41 years la…
> One of the people working on Voyager showed up at my grad school to get a degree between Uranus and Neptune. So, did he make it beyond Pluto or not?
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Leap seconds.
A minute is still 60 seconds. The only difference is that some clocks will occasiomally go an entire minute without incrementing their minute counter. This is a property of the map, not the territory.
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I can assure you that the distance took its toll on the rovers, in my understanding. Their wheel surfaces eroded, oil pumps failed, bearings degraded and they ended up dragging dead wheels in the end.
Are you talking about the distance the rovers traveled while on mars? Because that's not what Retric is talking about. Retric is talking about the distance from the earth to mars (hence why they compared it to the moon).
HERE►► http://www.worktoday33.com
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Thanks for that clarification. After this, I was able to find the International System of Units Wikipedia page which clearly defines a second as per your summary. It's a relief to see that it's a constant formula like that of the Kilogram.
I was suprised to learn (from the wiki page) that the kelvin, mole, and ampere do not have exact numerical definitions yet, though I guess that's expected to change in May of this year. And then there's the candela, still basically defined by how luminous whale blubber is when it is burning: > Current (1979): The luminous intensity, in a given direction, of a source that emits monochromatic radiation of frequency 5.4…
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I was suprised to learn (from the wiki page) that the kelvin, mole, and ampere do not have exact numerical definitions yet, though I guess that's expected to change in May of this year. And then there's the candela, still basically defined by how luminous whale blubber is when it is burning: > Current (1979): The luminous intensity, in a given direction, of a source that emits monochromatic radiation of frequency 5.4…
What happens in May?
https://www.nist.gov/news-events/news/2018/11/historic-vote-...