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  2. Edmund Scientific Corporation - Wikipedia

    en.wikipedia.org/wiki/Edmund_Scientific_Corporation

    Edmund Scientifics marketed to consumers and specialized in science-themed toys, vaguely high-tech household gadgets, and "science gifts." Edmund Optics did not have a public showroom like Edmund Scientifics, although the two organizations shared the same building. The large back room of Edmund Scientifics still sold military surplus from World ...

  3. Astroscan - Wikipedia

    en.wikipedia.org/wiki/Astroscan

    When Edmund Scientific introduced the telescope in 1976 they called it "The Edmund Wide-Field Telescope" with a Part Number "2001" [5] Edmund had a public contest which ran until November 15, 1976, to come up with a name. [6] The winning name was "Astroscan 2001". The "2001" part of the name was dropped over time.

  4. Window (optics) - Wikipedia

    en.wikipedia.org/wiki/Window_(optics)

    Optical windows used for UV/VIS spectroscopy, are usually made from glass or fused silica. [5] In IR spectroscopy, there is a wide range of materials that transmit light into the far infrared and can be utilized for the construction of optical windows, from barium fluoride (BaF 2), calcium fluoride, potassium bromide, potassium chloride, sodium chloride, germanium (Ge), zinc selenide (ZnSe ...

  5. Atmospheric optics ray-tracing codes - Wikipedia

    en.wikipedia.org/wiki/Atmospheric_optics_ray...

    Atmospheric optics ray tracing codes - this article list codes for light scattering using ray-tracing technique to study atmospheric optics phenomena such as rainbows and halos. Such particles can be large raindrops or hexagonal ice crystals. Such codes are one of many approaches to calculations of light scattering by particles.

  6. 1951 USAF resolution test chart - Wikipedia

    en.wikipedia.org/wiki/1951_USAF_resolution_test...

    Glass chart. A 1951 USAF resolution test chart is a microscopic optical resolution test device originally defined by the U.S. Air Force MIL-STD-150A standard of 1951. The design provides numerous small target shapes exhibiting a stepped assortment of precise spatial frequency specimens.

  7. Cancel or reactivate your AOL account

    help.aol.com/articles/account-management-cancel...

    Things to know when you change your AOL account to the free AOL plan: If you cancel your billing and change to the free AOL plan in the middle of your billing cycle, you'll continue to have access to the service until the end of your current billing cycle. If you have any active premium subscriptions, those will continue to be billed separately.

  8. Index of optics articles - Wikipedia

    en.wikipedia.org/wiki/Index_of_optics_articles

    Optics is the branch of physics which involves the behavior and properties of light, including its interactions with matter and the construction of instruments that use or detect it. [1] Optics usually describes the behavior of visible , ultraviolet , and infrared light.

  9. Unsubscribe from email subscriptions - AOL Help

    help.aol.com/articles/how-do-i-unsubscribe-from...

    AOL Mail makes it easy to send an unsubscribe request to the sender on your behalf: 1. From your AOL Mail inbox, click on the newsletter or promo email. 2. Click the Spam icon. 3. If you're given the option, click Unsubscribe and you will no longer receive messages from the mailing list.