[dms-discuss] Electromagnetic Spectrum Chart

[Jim Vanderveen]

Nuts! This thing's still under copyright I think. I can't quite read the date on my phone, but it looks like 1944. (A few years after Disney's first movie.)

Welch Scientific became Sargent Welch a while back. 

https://www.sargentwelch.com/store/content/externalContentPage.jsp?path=/www.sargentwelch.com/en_US/history_of_sargent_welch.jsp

On Jan 3, 2014, at 9:39, Jim Stewart <jstewart at jkmicro.com> wrote:

> I downloaded a very cool high resolution
> scan of an old electromagnetic spectrum
> chart and spent about 10 hours retouching
> it.
> 
> If we can get the big printer working, I'd
> love to get 2-3 copies of the chart printed.
> 
> Here are the files for anyone interested:
> 
> Retouched, small - 3.2meg
> http://www.grumpyoldgeek.com/images/ElectromagneticChartRetouchedSmall.jpg
> 
> Retouched, large - 63meg
> http://www.grumpyoldgeek.com/images/ElectromagneticChartRetouchedLarge.jpg
> 
> Original, 109meg
> http://www.grumpyoldgeek.com/images/ElectromagneticChartOriginal.jpg
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