16. Cell phones and other electronic devices with emit light…
16. Cell phones and other electronic devices with emit light by LEDs. Screen time can be bad for our eyes due to the blue light emitted from these devices. Blue light has a wavelength of approximately 425 nm. (WCSU25., 10 points) a. In one minute, roughly 175 J of energy are emitted from a cell phone screen. How many photons are emitted in that time? b. How many moles of photons is this? c. We hear a lot about blue light warnings and can even purchase glasses with a blue light filter. Explain in a few words why there aren’t similar concerns over red light. Periodic Table Data Sheet Enter the value of part b in the box below.