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2. A magnifying mirror is a travel must-have for anyone ... - AOL

   www.aol.com/lifestyle/a-magnifying-mirror-is-a...

   "This mirror is so good for your cosmetic bag," said one shopper. "It's small but not too small. I love that it lights up. The charge for the lights lasts forever.

3. The 10 Best Makeup Mirrors That Will Upgrade Your Glam ... - AOL

   www.aol.com/lifestyle/10-best-makeup-mirrors...

   In addition to turning up the wattage, the best makeup mirrors are known to offer to 10x magnification power and can be conveniently rotated, ensuring that every angle is well-lit and that you can ...

4. Early Prime Day deals under $50 — 40+ items to shop right now

   www.aol.com/lifestyle/early-prime-day-deals...

   A lighted makeup mirror is a handy tool for everything from applying eyeliner to tweezing a stray eyebrow hair. This one is 40% off — but the bargain isn't even the best part.

5. Refracting telescope - Wikipedia

   en.wikipedia.org/wiki/Refracting_telescope

   A refractor's magnification is calculated by dividing the focal length of the objective lens by that of the eyepiece. [1] Refracting telescopes typically have a lens at the front, then a long tube, then an eyepiece or instrumentation at the rear, where the telescope view comes to focus. Originally, telescopes had an objective of one element ...

6. Geometrical optics - Wikipedia

   en.wikipedia.org/wiki/Geometrical_optics

   Geometrical optics. Geometrical optics, or ray optics, is a model of optics that describes light propagation in terms of rays. The ray in geometrical optics is an abstraction useful for approximating the paths along which light propagates under certain circumstances. The simplifying assumptions of geometrical optics include that light rays:

7. Curved mirror - Wikipedia

   en.wikipedia.org/wiki/Curved_mirror

   A curved mirror is a mirror with a curved reflecting surface. The surface may be either convex (bulging outward) or concave (recessed inward). Most curved mirrors have surfaces that are shaped like part of a sphere, but other shapes are sometimes used in optical devices. The most common non-spherical type are parabolic reflectors, found in ...