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Thread: Post your interesting eBay finds...

  1. #1241
    Join Date
    Jan 2013
    Location
    Santa Rosa, CA
    Posts
    133

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    Quote Originally Posted by krazer View Post
    this guy has a couple of green henes for cheap http://www.ebay.com/itm/Used-HeNe-La...item35c4b5eb42
    They are selling just PSUs. The green HeNe in the photos is just to show the PSU is working.

  2. #1242
    Join Date
    May 2011
    Location
    Duisburg ,Germany
    Posts
    124

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    He also sells a green hene tube
    http://item.mobileweb.ebay.com/viewi...id=81669777286

    StarryEyed

  3. #1243
    Join Date
    Aug 2005
    Location
    Silicon Valley
    Posts
    442

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    Someone should buy this yellow / orange HeNe before I do.

    http://www.ebay.com/itm/330877801257

  4. #1244
    Join Date
    Aug 2005
    Location
    Silicon Valley
    Posts
    442

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    aaaand it's sold. Hope it was someone here.

  5. #1245
    Join Date
    Dec 2009
    Location
    Reading, UK
    Posts
    222

  6. #1246
    Join Date
    Sep 2006
    Location
    Netherlands
    Posts
    1,438

  7. #1247
    Join Date
    Mar 2013
    Posts
    4

  8. #1248
    Join Date
    Jan 2007
    Location
    Yorkshire, UK
    Posts
    4,585

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    Quote Originally Posted by cewell View Post
    Probably a stupid question, but what am I going to use that for?, or more specifically... What am I going to use that for in relation to lasers???
    Quote: "There is a theory which states that if ever, for any reason, anyone discovers what exactly the Universe is for and why it is here it will instantly disappear and be replaced by something even more bizarre and inexplicable. There is another that states that this has already happened.”... Douglas Adams 1952 - 2001

  9. #1249
    Join Date
    Aug 2008
    Location
    Berkshire
    Posts
    664

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    Quote Originally Posted by Jem View Post
    Probably a stupid question, but what am I going to use that for?, or more specifically... What am I going to use that for in relation to lasers???
    Good point Jem, and at $200 per gram too. Worlds most expensive beam stop

  10. #1250
    Join Date
    Mar 2013
    Posts
    4

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    Quote Originally Posted by Jem View Post
    Probably a stupid question, but what am I going to use that for?, or more specifically... What am I going to use that for in relation to lasers???
    "Carbon nanotubes—tiny cylinders made of carbon atoms—conduct heat hundreds of times better than today's detector coating materials. Nanotubes are also resistant to laser damage and, because of their texture and crystal properties, absorb light efficiently. Scientists hope that the nanotubes' resistance to aging and hardening will allow them to extend the range of NIST laser power standards to ultraviolet wavelengths."

    http://www.nist.gov/pml/div686/laser_012605.cfm

    *rollseyes*

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