A relatively long-lived excited state of an atom has a lifetime of 3.00 ms. What is the minimum uncertainty in its energy?
Keanna Ghafari Biology Lab Gabby Grinslade November 16, 2015 Abstract For this lab, the overall project goal was to assess which wavelengths of light best help the process of photosynthesis to occur, based on time it took for the reaction to occur. To identify the goal, wavelengths 450 nm (Blue), 650 nm (Red), and 500 nm (Green) were used in form of dye in a small beaker. Next, small circular, hole punched spinach leaves were inserted into a syringe with a buffer, and then all possible air was suctioned out. The leaves were then placed into each of the beakers, also using a beaker in buffer solution, which was placed under minimal to no light in order to ensure no other factor aside from light was enabling photosynthesis. The results from this project were that the red dye enabled photosynthesis to occur the quickest, taking 1 minute and 55 seconds for the spinach leaves to rise to the surface of the dye, then the blue dye, which took 2 minutes, leaving green to be the most ineffective, at 3 minutes and 49 seconds for the leaves to rise. Introduction The importance of testing which wavelengths best help photosynthesis to occur is to know which wavelengths are best absorbed through photosynthesis, and which one is emitted. The hypothesis was that red and blue wavelengths of light would be more effective in carrying out photosynthesis than green wavelengths because the spinach leaves are reflecting the color green, meaning that they must be absorbing all other w