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  2. Glass code - Wikipedia

    en.wikipedia.org/wiki/Glass_code

    The resulting glass code is the value of n d − 1 rounded to three digits, followed by V d rounded to three digits, with all decimal points ignored. For example, BK7 has n d = 1.5168 and V d = 64.17, giving a six-digit glass code of 517642. [1] Consequently, a linear approximation for the refractive index dispersion close that wavelength is ...

  3. Blu-ray - Wikipedia

    en.wikipedia.org/wiki/Blu-Ray

    Blu-ray (Blu-ray Disc or BD) is a digital optical disc data storage format designed to supersede the DVD format. It was invented and developed in 2005 and released worldwide on June 20, 2006, capable of storing several hours of high-definition video (HDTV 720p and 1080p).

  4. Illegal number - Wikipedia

    en.wikipedia.org/wiki/Illegal_number

    An illegal prime is an illegal number which is also prime.One of the earliest illegal prime numbers was generated in March 2001 by Phil Carmody.Its binary representation corresponds to a compressed version of the C source code of a computer program implementing the DeCSS decryption algorithm, which can be used by a computer to circumvent a DVD's copy protection.

  5. BD+ - Wikipedia

    en.wikipedia.org/wiki/BD+

    BD+ is a component of the Blu-ray Disc digital rights management system. It was developed by Cryptography Research Inc. and is based on their Self-Protecting Digital Content concept. [1] Its intent was to prevent unauthorized copies of Blu-ray discs and the playback of Blu-ray media using unauthorized devices.

  6. Regional lockout - Wikipedia

    en.wikipedia.org/wiki/Regional_lockout

    For bypassing region codes, there are software and multi-regional players available. A new form of Blu-ray region coding tests not only the region of the player/player software, but also its country code, repurposing a user setting intended for localization (PSR19) as a new form of regional lockout. This means, for example, while both the U.S ...

  7. Wait, So Do Blue Light Glasses Actually Work? Here's What ...

    www.aol.com/wait-blue-light-glasses-actually...

    Blue light glasses may not be effective (at least not based on current research) but are usually safe. Therefore, experts say wearing blue light glasses daily is generally safe.

  8. Digital cinema - Wikipedia

    en.wikipedia.org/wiki/Digital_cinema

    The technology combines a single digital projector fitted with either a polarizing filter (for use with polarized glasses and silver screens), a filter wheel or an emitter for LCD glasses. RealD uses a " ZScreen " for polarisation and MasterImage uses a filter wheel that changes the polarity of projector's light output several times per second ...

  9. I tried those Pair Eyewear glasses with the magnetic ... - AOL

    www.aol.com/lifestyle/tried-those-pair-eyewear...

    Save 15% with promo code YAHOO15. If you've never ordered glasses online before, you'll want to be sure to have an updated prescription close at hand, complete with pupillary distance (PD ...

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