The Energy Of The Emitted Light Decreases With Increasing Particle Size. Explain This Effect?

The colour of the fluorescence of colloidal solutions of CdS nanoparticles depends on their size, changing from blue for small particles (1.7 nm), through green and yellow to orange red for 6 nm particles. This means that the energy of the emitted light decreases with increasing particle size. Explain this effect.

Green Light Can Have A Wavenlength Of 541 Nm. The Energy Of A Photon Of This Light Is?

E = (hc) / λ
Where “h” is Planck’s constant, “c” is the speed of light, and λ is the wavelength (in meters).
E = [(6.626*10^-34)(3.00*10^8)] / (541*10^-9)
E = 3.47*10^-19 J/photon

I Need Some Feedback From The Green Community On This Idea: Microfinance For Energy Efficiency?

I need some feedback from the Green Community on this idea: Microfinance for energy efficiency.
Microfinance is huge now. Kiva.org is extremely popular and growing.
What if we could reapply this web based microfinance system towards energy efficiency projects.
The projects that would be funded would be like:
1) A 2yr loan to replace refigirators at a senior citizen home
2) A 6month loan to repalce all the old lightbulbs at schools
3) A 1.5yr loan to replace the furnace at a school
Users would select which loans they want to fund on a website and would be repaid the principle over the load period. 100% of the loan would go directly to the project (nothing for overhead). When the load is repaid, the lenders would be free to reloan if they like or withdraw their funds.
The projects would all be energy efficiency projects in the US to start off with but may expand to renewable energy project later on.
Would this be something that you would be a part of?

I’ve Been Trying This Only Natural, Organic Type Diet And I Will Buy Organic Dark Chocolate. Bad Or Good?

I heard that caffiene causes weight gain is that true?? Well why? && Is this organic dark chocolate a good idea when I’m wanting something sweet really bad?? The thing of it is , im looking for something that taste’s sweet that wont cause me to gain weight. I am always craving sweets bad usually after school, work or soccer practice. I just got back from working out for two hours and drank some chocolate milk and i feel pretty mad at myself. But it needs to be easy access so i dont get to something unhealthy firts….PLEASE HELP. =D

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