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2. Adjustable-focus eyeglasses - Wikipedia

   en.wikipedia.org/wiki/Adjustable-focus_eyeglasses

   Adjustable focus eyeglasses are eyeglasses with an adjustable focal length. They compensate for refractive errors (such as presbyopia) by providing variable focusing, allowing users to adjust them for desired distance or prescription, or both. Current bifocals and progressive lenses are static, in that the user has to change their eye position ...

3. Digital photo frame - Wikipedia

   en.wikipedia.org/wiki/Digital_photo_frame

   A digital photo frame. A digital photo frame (also called a digital media frame) is a picture frame that displays digital photos without the need of a computer or printer. The introduction of digital photo frames predates tablet computers, which can serve the same purpose in some situations; however, digital photo frames are generally designed specifically for the stationary, aesthetic display ...

4. Adjustable shelving - Wikipedia

   en.wikipedia.org/wiki/Adjustable_shelving

   Adjustable shelving. Shelf system consisting of slotted angle irons, perforated with round and oblong holes for mounting shelves by using bolts and nuts. An adjustable shelf is a shelf that can be adjusted according to needs. The most common variant is that the height intervals can be adjusted to accommodate various items.

5. These Digital Picture Frames Make Long-Distance Photo ... - AOL

   www.aol.com/lifestyle/9-best-digital-picture...

   Digital Picture Frames. Connect the frame(s) to Wi-Fi, download the free Frameo app, and you can share photos and videos from anywhere. The touchscreen frame and the app are both easy to use, and ...

6. The best digital photo frames of 2024 (If your ... - AOL

   www.aol.com/lifestyle/best-digital-photo-frames...

   Nixplay 10.1-Inch Digital Picture Frame. Best digital picture frame for extended families. $149 at Amazon. The best digital picture frames aren't just for your snapshots, either; friends and ...

7. Active shutter 3D system - Wikipedia

   en.wikipedia.org/wiki/Active_shutter_3D_system

   Active shutter 3D system. An active shutter 3D system (a.k.a. alternate frame sequencing, alternate image, AI, alternating field, field sequential or eclipse method) is a technique of displaying stereoscopic 3D images. It works by only presenting the image intended for the left eye while blocking the right eye's view, then presenting the right ...