Tuesday, July 23, 2013
Monday, July 15, 2013
Video of space flight on your desktop wallpaper
Here is a guide on how to use VLC to run any video as the desktop wallpaper! Quick guide is this:- Open VLC and select Tools -> Preferences.
- Inside "Preferences" windows, select the "Video" settings on the left.
- Select "DirectX video output" from the "Output" dropdown list.
- Save and restart VLC.
- Play your video, select "Video" menu and then select "DirectX Wallpaper".
- Enjoy ;)
Here are a few awesome videos of Earth from space:
http://www.youtube.com/watch?v=P5_GlAOCHyE
http://www.youtube.com/watch?v=Ip2ZGND1I9Q
Memorable quotes about life from Richard Branson
“You can get happiness from making a real difference to other peoples lives, setting out to change peoples lives for the better and setting out to try really rights and some of the wrongs in the world.
“I am a great believer in live in saying yes than not saying no, and hopefully making peoples smile and just having fun in live.”
“I am a great believer in working hard and partying hard.”
“I think you should do in live what you think you could make a real difference on”
Gandalf, he just never stops
swinging for 10 hours to Eurovision tune :))))))))))
How to convert redox potential vs NHE to energy in absolute scale
To convert energy from absolute scale [given in electron volts] to redox potential with reference to normal hydrogen electrode (NHE) [in Volts] use this equation:
eU_redox_potential_with_reference_to_NHE / e [V] = -4.5 [eV] - E_Fermi [eV].
Example: Fermi level of Silicon on a vacuum scale is E_Fermi = -4.8 eV, so the corresponding redox potential with reference to NHE is:
U_redox_potential_with_reference_to_NHE = -4.5 - (-4.8) = +0.3 V.
Now, the opposite conversion, to convert redox potential with reference to NHE [in Volts] to energy in absolute scale [in Electron Volts], use this equation:
E_Fermi [eV] = -4.5 [eV] - eU_redox_potential_with_reference_to_NHE / e [V].
Example: Fermi level of Silicon given in redox potential with reference to NHE is +0.3 V, so the Fermi level in absolute scale is:
E_Fermi = -4.5 -0.3 = -4.8 eV.
Use this figure to check your values.
Figure taken from "Zoski, Cynthia G., ed. Handbook of electrochemistry. Access Online via Elsevier, 2007".
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