Re: Light in an Infinite Universe

From: bz (bz+sp_at_ch100-5.chem.lsu.edu)
Date: 03/24/05 

Date: Thu, 24 Mar 2005 20:19:11 +0000 (UTC)

"PD" <pdraper@yahoo.com> wrote in news:1111694130.635919.277750
@o13g2000cwo.googlegroups.com:

>
> Nick wrote:
>> PD wrote:
>> > Nick wrote:
>> > > An infinite universe is the only solution for
>> > > light emmited redshifted at the edge of a black
>> > > hole. There is an infinite gravitational redshift AKA
>> > > Einstein shift at the event horizon.
>> > > So that light would have an infinite wavelength and size.
>> > > Energyless Light predicted!!!
>> > > Poppy***.
>> > >
>> > >
>> > > What is more interesting; because it is possible;
>> > > is that light emmited close enough to a black hole
>> > > will undergo a redshift so great it would be larger
>> > > than the finite universe. Where would it fit?
>> >
>> > Did you know that in most organ pipes, only a quarter of a standing
>> > wave fits in the pipe?
>> Where then is the rest of the wave?
>
> It's NOT THERE! Nor does it have to be. You are under the mistaken
> impression that waves only come in whole number multiples of
> wavelengths. I have no idea where you got that notion.
>

more like half wave multiples.

how do you make half a photon?

You can have things that resonate at a frequency that is lower than their
length. Many resonant structures are 1/4 wavelength, but they are usually
just half of the actual resonant structure. For a 1/4 wave antenna, the
earth or ground plane serves as the other half of the antenna. For a 1/4
wave organ pipe [closed at the bottom end, as opposed to a 1/2 wave organ
pipe that is open at the bottom end], the reflection of the pressure wave
from the bottom end makes the other 1/4 wave.

Hmmmm can a structure support a vibration that is much larger than the
structure.

I don't think you can generate a wave on water that is much larger than the
container that the water is in.

I don't think you can excite a drum head to vibrate at a frequency lower
than the 1/2 wave diameter of the drum. 

-- 
bz
please pardon my infinite ignorance, the set-of-things-I-do-not-know is an 
infinite set.
bz+sp@ch100-5.chem.lsu.edu   remove ch100-5 to avoid spam trap
Quantcast