From: unruh@invalid.ca   
      
   On 2012-06-24, Wolfgang Schelongowski  wrote:   
   > Adam  writes:   
   >   
   >>Jim Beard wrote:   
   >>> On 06/23/2012 03:52 PM, Adam wrote:   
   >>>> I checked, and infrared is   
   >>>> in the 1-400 THz range.  Visible light is ~405-790 THz.  Does   
   >>>> that mean RF transmissions in that range would be visible?   
   >>>   
   >>> RF transmissions in those ranges are infrared and visible light.   
   >>> They are photons if described as corpuscular particles, waves if   
   >>> described using Maxwell's equations.   
      
   Since by definition, RF is Radio Frequency which is defned as below   
   about 1GHz, at which point youget microwaves. But if you mean " is   
   electromagnetic transmission in those ranges infrared or visible light"   
   then yes. And just as radio oscillators produce radio waves, laser   
   oscillators produce IR and visible light. Same thing, different   
   frequencies.   
      
      
   >>   
   >>Which I suppose excludes them as RF transmission ranges, unless light is   
   >>allowable.  Would frequencies significantly higher than those be usable?   
      
   Useable for what? Xrays are used by your doctor all the time.   
      
   >>  I've forgotten what I learned in college "freshman physics", mainly   
   >>because the course was horrible.  It was one factor in my decision to   
   >>leave that university, even though I wasn't a physics major.   
      
   Too bad you gave up the chance to learn because of a bad experience. I   
   hope you replaced it with some other means.   
      
   >>I see that this thread has also gone OT, although the brief discussion   
   >>of security seems to be over.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)