Electromagnetic radiation Definition and 163 Threads

  1. P

    Pertaining to the properties of electromagnetic radiation/ quanta

    i do not believe that there is an answer, though i wish to be sure weather or not there are any semi-valid atleast theories on the reason for the wavelike properties exhibited in matter, and why they become more prevalent as the matter is of more concentrated energy (in photon for example...
  2. S

    Why Can Human Eyes Only See Visible Light?

    This is quite homework but i did think about it whilst at school and i wasnt sure where to post it. In the entire electromagnetic spectrum our eyes can only view the visible wavelengths of photons. My teacher said this and it lead me to think why this is so. I've breifly looked on the...
  3. R

    Electromagnetic radiation is the acceleration or deceleration

    the source of all electromagnetic radiation is the acceleration or deceleration of charged particles, mostly electrons….only when an electron jumps down energy levels, a photon/ electromagnetic wave is emitted…sounds contradicting to me, how can be both correct? Hope question isn’t too silly.
  4. M

    How Does Electromagnetic Radiation Travel and Induce Current?

    Hi everyone:) I recently began doing some independent studies on electrical engineering, and came across the topic of radios. There was one thing that puzzled me, however. I thought I had a basic understanding of electromagnetic radiation. I had understood that it was a wave that propagated...
  5. K

    Canadian light source electromagnetic radiation

    newtoPF-how do you delete this thread? i wasn't sure about where to post...sorry for double posting...but how do you delete this anyways...?
  6. K

    How Does the Canadian Light Source Utilize Electromagnetic Radiation?

    Please help me answer these questions~~~thank you~~ In October, 2004, the Canadian Light Source (CLS) was officially opened. This device is a synchrotron. It produces electromagnetic radiation that can be used to probe the structure of materials. 1. Explain how electric and magnetic fields...
  7. K

    Electromagnetic radiation and Canadian Light Source

    Please help me answer these questions~~~thank you~~ In October, 2004, the Canadian Light Source (CLS) was officially opened. This device is a synchrotron. It produces electromagnetic radiation that can be used to probe the structure of materials. 1. Explain how electric and magnetic fields...
  8. B

    Exploring Electromagnetic Radiation and Its Effect on Absolute Rest

    Hi, I'm looking into electromagnetic radiation at the moment and something has just entered my head. If its true that an electron will not radiate unless its velocity changes with time then could this property be used to determine absolute rest. That is, how can we know that if something is...
  9. 1

    Electromagnetic Radiation problems

    A celebrity holds a press conference, which is televised live. A television viewer hears the sound picked up by a microphone directly in front of the celebrity. This viewer is seated 2.1 m from the television set. A reporter at the press conference is located 4.1 m from the microphone and hears...
  10. C

    Help:Specific Heat and Electromagnetic radiation

    Please help uncloud my understanding #1.Why does the Earth cool off much more quickly when the weather is clear than cloudy? My foggy understanding: The cloud cover “traps” the heat energy radiated from the Earth because water has a high heat capacity, and so takes a longer time to heat up...
  11. U

    Electromagnetic Radiation Spectrum Poster

    You may find this poster of "The Electromagnetic Radiation Spectrum" of interest. http://unihedron.com/projects/spectrum/ This poster includes all known ranges of EMR including Gamma Rays, X-Rays, Ultraviolet light, Visible light, Infrared, Microwaves, Radio waves (ULF, VLF, LF, MF...
  12. B

    Wavelength of electromagnetic radiation

    Calculate the longest wavelength of electromagnetic radiation that could ionize an atom of each of the following elements: a) Li; IE1=520.1 kJ/mol can some one tell me the steps to do this problem. thanks
  13. J

    A microwave oven produces electromagnetic radiation

    I need help with the following questions. 1.A microwave oven produces electromagnetic radiation at lambda = 12.3cm and produces a power of 764W. Calculate the number of microwave photons produced by the microwave oven each second. 2.Compton used photons of wavelength 71.3 pm. (a)...
Back
Top