1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Low Wavelength and Photosynthesis

  1. Feb 7, 2013 #1
    I realize this is not a biology forum.

    Check out the attachment.

    As expected, plants can use some low wavelength ultraviolet light for photosynthesis.

    However, the photosynthetic process seems to go nuts when x-rays are used. This is the first time I've ever heard of this. Even gamma rays seem to produce good results.

    Is this some sort of survival mechanism for a post-apocalyptic nuclear wasteland? :p

    Or more likely, a throwback to a time when the earth had a thinner atmosphere? (might be way off here). Would the lower wavelengths cause mutagenic effects?

    Seeing as how wavelengths around 650nm seem to contribute to a rate of photosynthesis comparable to 350nm-450nm range, producing these high frequency waves would obviously be impractical and wasteful when there's plenty of good radio and microwave spectrum radiation lying around. :p

    Has anyone read any studies about this?
     

    Attached Files:

    Last edited: Feb 7, 2013
  2. jcsd
  3. Feb 7, 2013 #2

    ZapperZ

    User Avatar
    Staff Emeritus
    Science Advisor
    Education Advisor
    2016 Award

    Please note that it is standard practice in science (and many other places as well) that when you take something like this, you must attribute the source! It is "bad manners" in science to take a figure, especially when it has experimental data, and not cite the source.

    Zz.
     
  4. Feb 7, 2013 #3
    I don't really have a source, sorry. This graph came included in the course materials for a physics course.
     
  5. Feb 7, 2013 #4

    ZapperZ

    User Avatar
    Staff Emeritus
    Science Advisor
    Education Advisor
    2016 Award

    Then you should make sure you clarify that THAT is where you got it, and that you cannot attribute the source (it is a very bad form for your course material to not cite where they got something like this). Or else, if the owner of this graph happened to see it and there's no mention of any attempt at crediting the work, that does not make for a very good image of this forum.

    Zz.
     
  6. Feb 7, 2013 #5

    ZapperZ

    User Avatar
    Staff Emeritus
    Science Advisor
    Education Advisor
    2016 Award

    BTW, you are reading the figure all wrong! The top part of the figure is simply a scale of the different wavelengths. The bottom graph is not related to the top. Look at the horizontal scale of the graph. The wavelengths are in the hundreds of nm. x-ray has wavelength LESS than 1 nm!

    Zz.
     
  7. Feb 7, 2013 #6
    D'oh. That's embarrassing. The graph is only for visible light.

    Topic delete plz.
     
  8. Feb 7, 2013 #7

    micromass

    User Avatar
    Staff Emeritus
    Science Advisor
    Education Advisor
    2016 Award

    Sorry, we don't delete threads on request. Threads are meant to be permanent.
     
  9. Feb 7, 2013 #8
    even useless and misleading threads?
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Low Wavelength and Photosynthesis
  1. Wavelength of Light (Replies: 5)

Loading...