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Author Topic:   Quick Questions, Short Answers - No Debate
crashfrog
Member (Idle past 1525 days)
Posts: 19762
From: Silver Spring, MD
Joined: 03-20-2003


Message 174 of 653 (631573)
09-01-2011 7:40 PM
Reply to: Message 173 by Dr Adequate
09-01-2011 7:22 PM


Re: Lagrange point
But could you have Lagrange points that did?
Could you have teapots that acted like orange trees? I'm pretty sure that L points and black holes are two different things.

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 Message 173 by Dr Adequate, posted 09-01-2011 7:22 PM Dr Adequate has not replied

  
crashfrog
Member (Idle past 1525 days)
Posts: 19762
From: Silver Spring, MD
Joined: 03-20-2003


Message 195 of 653 (633796)
09-16-2011 1:41 PM
Reply to: Message 188 by Dogmafood
09-16-2011 8:07 AM


Re: Red on blue
It seems to me that there is good contrast between the two colours but it looks fuzzy to me.
Actually the contrast is relatively low because they have roughly the same luminance. It's hard to read because only a subset of the cells in your retina can perceive the difference.
Flip your color space over to grayscale and you'll see that they're not so different at all.

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crashfrog
Member (Idle past 1525 days)
Posts: 19762
From: Silver Spring, MD
Joined: 03-20-2003


(1)
Message 290 of 653 (682685)
12-04-2012 3:47 PM
Reply to: Message 289 by foreveryoung
12-04-2012 11:41 AM


Re: Ocean acidification
Dissociation happens because it's free-energy favorable, so the extent to which it happens is determined by the free energy (delta-G). Recall that delta-G = RT ln(K). Take the derivative of K in terms of T and you'll see how the dissociation constant of HCO3 is affected by an increase in ocean temperatures.

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crashfrog
Member (Idle past 1525 days)
Posts: 19762
From: Silver Spring, MD
Joined: 03-20-2003


(1)
Message 295 of 653 (682700)
12-04-2012 7:42 PM
Reply to: Message 294 by foreveryoung
12-04-2012 6:13 PM


Re: Ocean acidification
It all depends on which factor carries the greatest weight in le Chateliers principle.....either greater dissolved CO2 or greater temperature affect on raising the disassociation constant.
Well, that's not going to be hard to figure out at a back-of-the-envelope level. A 50% change in solubility across a 20 degree difference is huge. Over the same temperature, though, the free energy will only change by about 6%. So the solubility is clearly your first-order factor.

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