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Post by nautonnier on Oct 10, 2016 1:32:58 GMT
Transverse acceleration (perpendicular to velocity) causes change in direction. If it is constant in magnitude and changing in direction with the velocity, we get a circular motion. For this centripetal acceleration we have a = v 2/r = w 2r v, is orbital velocity of orbiting body, r, is radius of the circle w is angular speed, measured in radians per unit time. The formula is dimensionless, describing a ratio true for all units of measure applied uniformly across the formula. If the numerical value of a is measured in meters per second per second, then the numerical values for v, will be in meters per second, r, in meters, and w in radians per second. en.wikipedia.org/wiki/Circular_orbitYou quoting wiki is not going to help me understand why you think the velocity vector is being curved. Neither will it help me understand what you mean by the Earths "current vector" How much force do you think would be required to move the Earth 1mm off its current vector See my more recent edits |
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Post by Andrew on Oct 10, 2016 1:40:12 GMT
You quoting wiki is not going to help me understand why you think the velocity vector is being curved. Neither will it help me understand what you mean by the Earths "current vector" See my more recent edits Like this one for example? The centripetal force that causes the planets to stay in orbit in a continual acceleration has got to be considerable and if its vector changes more rapidly than normal one would expect some distortion of our thin skinned bubble of liquid rock What do you mean by 'its vector'? You have said " the velocity vector is being curved", " current vector", " its vector" |
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Post by icefisher on Oct 10, 2016 5:21:30 GMT
Like this one for example? The centripetal force that causes the planets to stay in orbit in a continual acceleration has got to be considerable and if its vector changes more rapidly than normal one would expect some distortion of our thin skinned bubble of liquid rock What do you mean by 'its vector'? You have said " the velocity vector is being curved", " current vector", " its vector" does this help Andrew? vec·tor ˈvektər/Submit noun 1. MATHEMATICSPHYSICS a quantity having direction as well as magnitude, especially as determining the position of one point in space relative to another. |
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Post by missouriboy on Nov 14, 2016 0:31:23 GMT
Big earthquake in New Zealand. Hope you cousins are OK!
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Post by sigurdur on Nov 14, 2016 5:50:52 GMT
Yep. It was a shaker for sure.
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Post by nautonnier on Nov 14, 2016 9:09:11 GMT
Big earthquake in New Zealand. Hope you cousins are OK! At the time of the 'super moon' potentially more gravitational stresses on the Earth's crust. A discussion here news.nationalgeographic.com/news/2005/05/0523_050523_moonquake_2.htmlWherever you go in science you find people 'taking sides'. Although to geologists using reports of lost pets to forecast earthquakes would seem to be a little suspect. |
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Post by missouriboy on Dec 8, 2016 21:12:10 GMT
Anybody else been noticing what seems to be an uptick in the number of earthquakes? I haven't been running tallies but it seems that medium to slightly large seismic events are being reported at a rate of 1 or 2 a week recently.
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Post by acidohm on Dec 8, 2016 21:21:32 GMT
Anybody else been noticing what seems to be an uptick in the number of earthquakes? I haven't been running tallies but it seems that medium to slightly large seismic events are being reported at a rate of 1 or 2 a week recently.
Mentioned this to Mrs Acidohm earlier......there is a school of thought linking low solar activity with increased seismic activity, sounds like a bit of stretch tho... |
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Post by missouriboy on Dec 8, 2016 22:05:44 GMT
Anybody else been noticing what seems to be an uptick in the number of earthquakes? I haven't been running tallies but it seems that medium to slightly large seismic events are being reported at a rate of 1 or 2 a week recently.
Mentioned this to Mrs Acidohm earlier......there is a school of thought linking low solar activity with increased seismic activity, sounds like a bit of stretch tho... We're children in the darkness.  I'm sure we can find a database if we want one. Feels to me like we are getting a statistical 'blip'. I got what looked like a correspondence between seismic highs and solar lows. but I didn't spend much time on it. Others loudly proclaim a link, mechanism unknown.  |
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Post by tobyglyn on Dec 8, 2016 22:28:14 GMT
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Post by acidohm on Dec 8, 2016 23:02:22 GMT
I believe this is what Missouriboy is referring to....recent analysis says 8 but usually takes a few hours to pin it precisely... |
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Post by nautonnier on Dec 8, 2016 23:38:22 GMT
Anybody else been noticing what seems to be an uptick in the number of earthquakes? I haven't been running tallies but it seems that medium to slightly large seismic events are being reported at a rate of 1 or 2 a week recently.
Mentioned this to Mrs Acidohm earlier......there is a school of thought linking low solar activity with increased seismic activity, sounds like a bit of stretch tho... Needless to say we have been here before. There were some NASA papers on the subject. However, as much of the reasoning revolves <sic> around such things as barycenters - it appears to be a forbidden topic. |
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Post by missouriboy on Dec 9, 2016 0:20:32 GMT
Mentioned this to Mrs Acidohm earlier......there is a school of thought linking low solar activity with increased seismic activity, sounds like a bit of stretch tho... Needless to say we have been here before. There were some NASA papers on the subject. However, as much of the reasoning revolves <sic> around such things as barycenters - it appears to be a forbidden topic. It may fan a wind out of the North. |
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Post by tobyglyn on Dec 10, 2016 7:32:27 GMT
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dresi
Level 3 Rank
Posts: 120
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Post by dresi on Dec 17, 2016 12:40:48 GMT
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I'm sure we can find a database if we want one. Feels to me like we are getting a statistical 'blip'. I got what looked like a correspondence between seismic highs and solar lows. but I didn't spend much time on it. Others loudly proclaim a link, mechanism unknown. 
