Message boards : Rosetta@home Science : What is the unit of "Accepted Energy?"
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Richard Babylon Send message Joined: 27 Dec 05 Posts: 4 Credit: 1,641,122 RAC: 0 |
Years ago I had a science teacher who taught and railed and scolded that numbers which measure something are useless unless the unit of measurement is attached. I agree. What then, may I ask, is the unit for "accepted energy" as it appears in our screensavers, in the lower right corner? The MeV? The calorie... the erg... the foot-pound? :-) Of course I jest. I'm not even sure all of these are units of energy. Nor does it matter for your research; you know what you're doing. But it might, in all sincerity, add a touch of interest and reality for some of the geekier users, myself included. And it would make an ol' teacher -- rest his soul -- pretty proud. Thanks for considering it. |
agge Send message Joined: 14 Nov 06 Posts: 63 Credit: 432,341 RAC: 0 |
joules? |
Klimax Send message Joined: 27 Apr 07 Posts: 44 Credit: 2,800,788 RAC: 736 |
I'd say MeV (megaelectronvolts). |
Richard Babylon Send message Joined: 27 Dec 05 Posts: 4 Credit: 1,641,122 RAC: 0 |
I'd say MeV (megaelectronvolts). That would be my guess too, Klimax. But guesses are about as useless as numbers without units. Does anyone know? Dr. Baker? As for the joule, that must surely be far too large a unit for this kind of thing... on the order of silliness as my foot-pound. Then again, I'm no expert, either. Thanks for the responses. |
Greg_BE Send message Joined: 30 May 06 Posts: 5691 Credit: 5,859,226 RAC: 0 |
perhaps something in the si prefix range ? I'd say MeV (megaelectronvolts). |
Christoph Jansen Send message Joined: 6 Jun 06 Posts: 248 Credit: 267,153 RAC: 0 |
I'd say it is kJ/mole (Kilojoules per mole, with mole meaning 6*10^23 Particles, not the animal...), which is the normal units assigned to molecular formation energies. The ranges I see in Rosetta go well with that: 1 mole of carbon produces around 400 kJ when burned to CO2. Hydrogen bonds and other weak molecular interactions have some percents to per thousands of that. Most of the proteins we calculate have hundreds to thousands of such interactions, so they should also be roughly in a range of some tens to some hundreds of Kilojoules per mol. And this is exactly what I see most of the time. [Edit because of unsuccessful attempts to get a proper subscript in CO2...) |
Path7 Send message Joined: 25 Aug 07 Posts: 128 Credit: 61,751 RAC: 0 |
[quote]I'd say it is kJ/mole (Kilojoules per mole, with mole meaning 6*10^23 Particles, not the animal...) Hi all, I was looking for some basic information about Dr. David Baker at: http://depts.washington.edu/bakerpg/, followed a link to: http://tools.bakerlab.org/~pprate/, and there it was in Fig. 2: kcal/mol !! Thanks to: Department of Physics (M. Schlosshauer) & Department of Biochemistry (D. Baker) at the University of Washington. Path7. |
Christoph Jansen Send message Joined: 6 Jun 06 Posts: 248 Credit: 267,153 RAC: 0 |
Interesting they still work with kilocalories. So you need to multiply all values by roughly 4 (4,18605 exactly) to get kilojoules. "I know that you believe you understand what you think I said, but I'm not sure you realize that what you heard is not what I meant." R.M. Nixon |
Richard Babylon Send message Joined: 27 Dec 05 Posts: 4 Credit: 1,641,122 RAC: 0 |
I was looking for some basic information about Dr. David Baker at: Great find, Path7. So it's kcal/mol. Thank you. And sorry about my delayed reply. Now I wonder if that unit will be deemed worthy of display on the screensaver in the name of good science, and educating the users. How about it, Dr. Baker? |
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What is the unit of "Accepted Energy?"
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