Our laser pointer produces 3. That can also be written as 3. Using , that the laser would have to exert a force of 3. It turns out an enzyme such as a a helicase, RNA polymerase, DNA polymerase, or the ribosome, can typically generate about 10 pN of force. This means that the momentum of a laser pointer is just about right to stop the progress of an individual enzyme molecule.
This is why the optical trap is such a useful tool in biology. Tip: To turn text into a link, highlight the text, then click on a page or file from the list above.
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Plug in your value to find -- do not forget to convert the wavelength from nanometers to meters. The answer is rounded to three sig figs. How many photons are produced in a laser pulse of 0. Chemistry Bohr Model of the Atom Calculations with wavelength and frequency. Stefan V. Nov 22, Explanation: Your strategy here will be to use the Planck - Einstein relation to calculate the energy of a single photon of wavelength " nm" , then use the total energy of the laser pulse to figure out exactly how many photons were needed to produce that output.
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