[ARC5] Michelson-Morley beats 24 GHz work by about 50 years

[Bruce Long]

Here is a link to millimeter wave work at frequencies as high as60 GHz done by Bose at President College in India in 1895!

https://www.cv.nrao.edu/~demerson/bose/bose.html

He used a spark gap connected to resonant metallic spheres  as a source,   and metal to metal contacts using the surface oxide layer as a semiconductor for detection for the receiver.  With this home built equipment and other components, polarizors, attenuators waveguides and the like he measured the dielectric constants at millimeterwave frequencies of a number of dielectric materials.

This will make a great science fair project when my kids get older.

Ok Ok Bose started his work in 1895, actual millimeter wave measurements might have been as late as 1900.

bruce   kj3z





On Saturday, November 16, 2013 2:30 PM, Richard Knoppow <1oldlens1 at ix.netcom.com> wrote:
 

----- Original Message ----- 
From: "Gene Smar" <ersmar at verizon.net>
To: "Leslie Smith" <vk2bcu at operamail.com>; "ARC-5 List" 
<arc5 at mailman.qth.net>
Sent: Saturday, November 16, 2013 6:58 AM
Subject: Re: [ARC5] Michelson-Morley beats 24 GHz work by 
about 50 years


> Les:
>
>     My college physics professor opined that MM did indeed 
> influence Einstein's thinking about light's velocity being 
> a universal constant, hence leading to his famous thought 
> experiment that gave rise to his theory of relativity. 
> You're in good company, my friend.
>
>
> 73 de
> Gene Smar  AD3F
> P.S.  I, too, was thinking of the hazard associated with 
> all that Hg at their feet.
     I think this all traces back to James Clerk Maxwell.


--
Richard Knoppow
Los Angeles
WB6KBL
dickburk at ix.netcom.com 

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