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2. 25 Best and Worst Deals at Walmart - AOL

   www.aol.com/25-best-worst-deals-walmart...

   To help you maximize savings, GOBankingRates asked a variety of experts to list items you should snatch up at Walmart — and items you should steer clear of. 25 Best and Worst Deals at Walmart ...

3. Electronic article surveillance - Wikipedia

   en.wikipedia.org/wiki/Electronic_article...

   Electronic article surveillance antennas at an H&M store in Torp shopping mall, Sweden. Electronic article surveillance (EAS) is a type of system used to prevent shoplifting [1] from retail stores, pilferage of books from libraries, or unwanted removal of properties from office buildings.

4. Proximity sensor - Wikipedia

   en.wikipedia.org/wiki/Proximity_sensor

   An infrared proximity sensor Optical proximity sensor in a 2016 Samsung smartphone. A proximity sensor is a standard feature of most smartphones, disabling the touchscreen when positioned near an ear during phone calls; more recent (late 2019-early 2020) smartphones with OLED displays may have the sensor mounted under the display.

5. Detectors for transmission electron microscopy - Wikipedia

   en.wikipedia.org/wiki/Detectors_for_transmission...

   Charge coupled device (CCD) cameras were first applied to transmission electron microscopy in the 1980s and later became widespread. [3] [4] For use in a TEM, CCDs are typically coupled with a scintillator such as single crystal Yttrium aluminium garnet (YAG) in which electrons from the electron beam are converted to photons, which are then transferred to the sensor of the CCD via a fiber ...

6. Electro-optical sensor - Wikipedia

   en.wikipedia.org/wiki/Electro-optical_sensor

   Optical heart-rate sensor. Electro-optical sensors are used whenever light needs to be converted to energy. Because of this, electro-optical sensors can be seen almost anywhere. Common applications are smartphones where sensors are used to adjust screen brightness, and smartwatches in which sensors are used to measure the wearer's heartbeat.

7. News, Politics, Sports, Mail & Latest Headlines - AOL.com

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   This popular vitamin C serum is on sale for just $10: '60 is the new 40' Glamorous gold jewelry staples you can wear on repeat — all under $15 25 hostess gifts from Walmart are way better than a bottle of wine

8. Passive infrared sensor - Wikipedia

   en.wikipedia.org/wiki/Passive_infrared_sensor

   The plastic window reduces the chance of foreign objects (dust, insects, rain, etc.) from obscuring the sensor's field of view, damaging the mechanism, and/or causing false alarms. The window may be used as a filter, to limit the wavelengths to 8-14 micrometres, which is closest to the infrared radiation emitted by humans.

9. AOL Mail

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   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!