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2. Magnification - Wikipedia

   en.wikipedia.org/wiki/Magnification

   Thus, through binoculars with 10× magnification, the Moon appears to subtend an angle of about 5.2°. By convention, for magnifying glasses and optical microscopes, where the size of the object is a linear dimension and the apparent size is an angle, the magnification is the ratio between the apparent (angular) size as seen in the eyepiece and ...

3. Magnifying glass - Wikipedia

   en.wikipedia.org/wiki/Magnifying_glass

   Magnifying glasses typically have low magnifying power: 2×–6×, with the lower-power types being much more common. At higher magnifications, the image quality of a simple magnifying glass becomes poor due to optical aberrations, particularly spherical aberration. When more magnification or a better image is required, other types of hand ...

4. Coddington magnifier - Wikipedia

   en.wikipedia.org/wiki/Coddington_magnifier

   A Coddington magnifier is a magnifying glass consisting of a single very thick lens with a central deep groove diaphragm at the equator, thus limiting the rays to those close to the axis, which minimizes spherical aberration. This allows for greater magnification than a conventional magnifying glass, typically 10× up to 20×. Most single lens ...

5. Optical microscope - Wikipedia

   en.wikipedia.org/wiki/Optical_microscope

   In high-power microscopes, both eyepieces typically show the same image, but with a stereo microscope, slightly different images are used to create a 3-D effect. A camera is typically used to capture the image . [citation needed] The sample can be lit in a variety of ways.

6. AOL Mail

   mail.aol.com

   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

7. Ceasefire between Turkey and US-backed rebels extended ... - AOL

   www.aol.com/news/ceasefire-between-turkey-us...

   A ceasefire between Turkey and the U.S.-backed Kurdish Syrian forces (SDF) around the northern Syrian city of Manbij has been extended until the end of this week, State Department spokesperson ...