Irradiance Definition and 57 Threads

  1. H

    UV & Irradiance: Calculating UVA Dose for High School Project

    Dear forum members, I would like to ask some help regarding irradiance calculation. I am a high school student doing a project in biology in which I expose drosophila m. (fruit flies) to UVA radiation and I would like to mention in my paper the actual dose that was used. I know that... UV...
  2. P

    Optics - Double Slit Irradiance of Fringes

    [Solved] Optics - Double Slit Irradiance of Fringes Homework Statement A double slit diffraction pattern is formed using mercury green light at 546.1nm. Each slit has a width of 0.100mm (= b), slit separation is 0.400mm (=a). The pattern reveals that the fourth-order interference maxima are...
  3. T

    How can I accurately measure irradiance for my UV sanitization device design?

    hello. I am working to understand and design a UV sanitization device. What is a good resource to learn about irradiance and its relation to distance from a surface. Secondly, in real life, how is irradiance measured? Given a surface area, I would need to specify bulbs of certain...
  4. E

    Converting Between Light Intensity and Irradiance: How Do They Relate?

    What is the relationship between light intensity and irradiance? How do I convert one to the other?
  5. D

    How do I measure the irradiance of a particular wavelength?

    I am still a high school student and I want to do an experiment on a solar panel. I want filter out red light and then focus is it onto a solar panel and measure various intensities and how it relates to the variation of power output from the solar panel. For this I suppose I should measure the...
  6. J

    How Do You Convert Radiant Power to Irradiance for Solar Radiation Testing?

    Alright, I'm new to the forum, and I've got to say, it is quite impressive. Okay, my question: How do I convert radiant power (uW/10nm/Lumens) to W/m^2? I am conducting a simulated solar radiation test. I need to know the spectral power distribution of a certain metal hallide bulb. The...
  7. S

    How to Calculate Solar Irradiance from a Solar Flare?

    A solar flare releases 10^25 Joules of energy in one hour over an area amounting to 1% of the area of the Sun’s disk (radius 6.96 x 10^5 km). (a) Calculate the Solar irradiance in W m-2 associated with this flare. (b) Compare this with the black body radiation emitted by the Sun assuming...
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