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2. These Top-Rated Air Purifiers Are the Key to Fighting ... - AOL

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   $530; $430 at walmart. 2. Levoit Air Purifier. Amazon. A great choice for smaller spaces (up to 337 square feet), this compact filter has a stamp of approval from more than 38,000 5-star reviewers.

3. Who knew you could get a personal air purifier at Walmart for ...

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   That's where an air purifier can help — and, right now, Walmart is offering up the popular Holmes Personal Space 2-Speed Air Purifier with Air Ionizer for just $18.

4. 7 Best Black Friday Finds at Walmart for Millennial Shoppers

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   An air purifier is an investment in your well-being, and Walmart’s Black Friday pricing of just $44.99 for the Xiami Smart Air Purifier is hard to pass up. It is compact, but also covers up to ...

5. Multispectral imaging - Wikipedia

   en.wikipedia.org/wiki/Multispectral_imaging

   MWIR presents a strong signal from highly heated objects including rocket plumes, while LWIR produces emissions from the missile's body material. The US Army Research Laboratory reported that with their dual-band MWIR/LWIR technology, tracking of the Atlas 5 Evolved Expendable Launch Vehicles, similar in design to ICBMs, picked up both the ...

6. Forward-looking infrared - Wikipedia

   en.wikipedia.org/wiki/Forward-looking_infrared

   Long-wave infrared (LWIR) cameras, sometimes called "far-infrared", operate at 8 to 12 μm and can see heat sources, such as hot engine parts or human body heat, several kilometers away. Longer-distance viewing is made more difficult with LWIR because the infrared light is absorbed , scattered , and refracted by air and by water vapor.

7. Infrared - Wikipedia

   en.wikipedia.org/wiki/Infrared

   Infrared light from the LED of a remote control as recorded by a digital camera. A hyperspectral image is a "picture" containing continuous spectrum through a wide spectral range at each pixel. Hyperspectral imaging is gaining importance in the field of applied spectroscopy particularly with NIR, SWIR, MWIR, and LWIR spectral regions.

8. Walmart's answer to Amazon Prime Day is coming: Here's ... - AOL

   www.aol.com/lifestyle/walmarts-largest-deals...

   TCL Air Purifier — will be on sale for $30, down from $70 Westin Adirondack Chair — will be on sale for $90, down from $120 And unlike Amazon Prime Day , Walmart Deals is open to all shoppers ...

9. Mercury cadmium telluride - Wikipedia

   en.wikipedia.org/wiki/Mercury_cadmium_telluride

   Detection in the MWIR and LWIR windows is obtained using 30% [(Hg 0.7 Cd 0.3)Te] and 20% [(Hg 0.8 Cd 0.2)Te] cadmium respectively. HgCdTe can also detect in the short wave infrared SWIR atmospheric windows of 2.2 to 2.4 μm and 1.5 to 1.8 μm. HgCdTe is a common material in photodetectors of Fourier transform infrared spectrometers. This is ...