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  2. Surgical lighting - Wikipedia

    en.wikipedia.org/wiki/Surgical_lighting

    The distance between the points of 20% illumination intensity above and below the center point. From the point of maximum illumination, which is the center of the light field 1 meter from the light-emitting surface, the photometer is moved toward the light until the light intensity measured falls to 20% of the maximum value.

  3. Allis-Chalmers D series - Wikipedia

    en.wikipedia.org/wiki/Allis-Chalmers_D_series

    In October 1957, the D-17 was introduced, followed by the D10 and the D12 in 1959, in which year Allis-Chalmers made as many as 50 model configurations of the D10, 12, 14, and 17. The Model D17 was developed as a replacement for the WD45 as a four-plow tractor. The D17's styling closely followed the smaller D14.

  4. Standard illuminant - Wikipedia

    en.wikipedia.org/wiki/Standard_illuminant

    For example, D50 has a CCT of 5003 K ("horizon" light), while D65 has a CCT of 6504 K (noon light). This is because the value of the constants in Planck's law have been slightly changed since the definition of these canonical illuminants, whose SPDs are based on the original values in Planck's law. [1]

  5. Mastercard credit card benefits: What is the difference ... - AOL

    www.aol.com/finance/mastercard-credit-card...

    While the differences between networks like Mastercard and Visa tend to be minimal, each network has a slightly different host of benefits. Mastercard credit card benefits range from basic ...

  6. Caterpillar D10 - Wikipedia

    en.wikipedia.org/wiki/Caterpillar_D10

    CAT D10N at work in Rishon LeZion, Israel. Among modern tractors, the High Drive (elevated sprocket) design was unique to Caterpillar products. The concept originated in 1914 with Caterpillar predecessor C. L. Best Tractor's 30 Humpback; [citation needed] this tractor was discontinued a year later, and the only other tractor to use the concept until the D10's introduction was the Cletrac Model ...

  7. AOL Plans - AOL Help

    help.aol.com/articles/aol-advantage-plans

    Tech Plus by AOL will provide around-the-clock tech support for all your devices coupled with computer and digital data protection services. • Tech Plus by AOL - Platinum - Tech Plus Platinum includes top of the line products to help protect your identity, personal data and devices, so that you have more control over your digital life.

  8. Top 15 financial scams targeting older Americans — and what ...

    www.aol.com/finance/financial-scams-targeting...

    Seniors are taking the brunt of financial fraud to the tune of $3.4B+. Learn the most common peer-to-peer, impersonation and other scams on the rise to keep your money safe.

  9. Millions hurt by credit repair firms to share $1.8 billion in ...

    www.aol.com/millions-hurt-credit-repair-1...

    More than 4 million Americans gouged by credit repair companies including Lexington Law and CreditRepair.com will soon collectively receive $1.8 billion in refund checks, the Consumer Financial ...