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2. Reticle - Wikipedia

   en.wikipedia.org/wiki/Reticle

   Reticle accessory (PD-8) used in sniper rifles. A reticle, or reticule [1] [2] also known as a graticule, is a pattern of fine lines or markings built into the eyepiece of an optical device such as a telescopic sight, spotting scope, theodolite, optical microscope or the screen of an oscilloscope, to provide measurement references during visual ...

3. List of refractive indices - Wikipedia

   en.wikipedia.org/wiki/List_of_refractive_indices

   List of refractive indices. Refraction at interface. Many materials have a well-characterized refractive index, but these indices often depend strongly upon the frequency of light, causing optical dispersion. Standard refractive index measurements are taken at the "yellow doublet" sodium D line, with a wavelength (λ) of 589 nanometers .

4. Snell's law - Wikipedia

   en.wikipedia.org/wiki/Snell's_law

   Snell's law. Refraction of light at the interface between two media of different refractive indices, with n 2 > n 1. Since the velocity is lower in the second medium (v 2 < v 1 ), the angle of refraction θ 2 is less than the angle of incidence θ 1; that is, the ray in the higher-index medium is closer to the normal.

5. The ASUS 'Bezel-free Kit' is a messy multi-monitor solution

   www.engadget.com/2018-01-10-asus-bezel-hiding...

   ASUS: Bezel-free Kit is an accessory that enables gamers with multiple-monitor setups to visually eliminate the gaps where their displays connect, creating the appearance of one extra-large ...

6. AOL Mail for Verizon Customers - AOL Help

   help.aol.com/products/aol-mail-verizon

   1-800-358-4860. Get live expert help with your AOL needs—from email and passwords, technical questions, mobile email and more.

7. Xiaomi launches its own smart glasses, of course - Engadget

   www.engadget.com/xiaomi-launches-its-own-smart...

   Mon, Sep 13, 2021 · 2 min read. Xiaomi. Xiaomi is challenging Facebook in the wearables arena by launching its own smart glasses. The device won't only be capable of taking photos, but also of ...

8. Android may get its own built-in Bluetooth tracker detection

   www.engadget.com/google-android-bluetooth...

   According to 9to5Google, the Android team has started work on a tracker detection feature in Play services. The most recent APK code includes references to Tile trackers and "ATag" (probably ...

9. Refractive index - Wikipedia

   en.wikipedia.org/wiki/Refractive_index

   In optics, the refractive index (or refraction index) of an optical medium is a dimensionless number that gives the indication of the light bending ability of that medium. Refraction of a light ray. The refractive index determines how much the path of light is bent, or refracted, when entering a material. This is described by Snell's law of ...