Imaging and a little bit of OSS » unihedron http://nuclear-imaging.info/site_content Yet another techno blog Wed, 04 Jan 2012 18:29:48 +0000 en hourly 1 http://wordpress.org/?v=3.3.1 Posters of: Pi, e, and EM spectrum http://nuclear-imaging.info/site_content/2009/03/04/posters-of-pi-e-and-em-spectrum/?utm_source=rss&utm_medium=rss&utm_campaign=posters-of-pi-e-and-em-spectrum http://nuclear-imaging.info/site_content/2009/03/04/posters-of-pi-e-and-em-spectrum/#comments Wed, 04 Mar 2009 23:00:53 +0000 slash_boot http://nuclear-imaging.info/site_content/?p=177 [...]]]> In our functional imaging lab we have a poster of Electromagetic radiation spectrum. The chart goes from wavelengths corresponding to millihertz all the way up to EHz which is in 10^18 Hz range. It also describes the kind of systems that use those wavelengths, like for example the 87 to 108 MHz range is used for FM radio broadcasting and so on. I wanted to have that poster for myself so I looked around to see where I can buy one online. I found it on Unihedron website.

EM Radiation Spectrum Chart closeup

EM Radiation Spectrum Chart closeup

The person who created the website has the poster available for download – some of them in PDF and JPG formats. The posters are also on sale on that website, and at least as far as the EM radation spectrum poster goes, its available at quite an affordable price on that website.

There were other posters that were equally interesting, if you are into that kind of things. They were:

  • Value of Pi going up to 350,390 digits.
Poster of Pi: Going up to 350,390 decimals

Poster of Pi: Going up to 350,390 decimals

  • Value of e going up to 350,390 digits.

Poster of e with value going to 350,390 digits

Poster of e: Going up to 350,390 decimals

  • Primes numbers: The first 54,222 prime numbers

Poster with 54,222 primes

Poster with 54,222 primes

These are some great posters, especially the one with EM Radiation. Its a wonderful chart to have for reference if you are dealing with higher frequencies like in telecommunications or in medical imaging.

=====================

]]> http://nuclear-imaging.info/site_content/2009/03/04/posters-of-pi-e-and-em-spectrum/feed/ 1