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2. Triniscope - Wikipedia

   en.wikipedia.org/wiki/Triniscope

   Triniscope. The Triniscope was an early color television system developed by RCA. It used three separate video tubes with colored phosphors producing the primary colors, combining the images through dichroic mirrors onto a screen for viewing. As a consumer system it was enormous, expensive, impractical, and dropped as soon as the shadow mask ...

3. Shadow mask - Wikipedia

   en.wikipedia.org/wiki/Shadow_mask

   The shadow mask is one of the two technologies used in the manufacture of cathode-ray tube (CRT) televisions and computer monitors which produce clear, focused color images. The other approach is the aperture grille, better known by its trade name, Trinitron. All early color televisions and the majority of CRT computer monitors used shadow mask ...

4. Porta-Color - Wikipedia

   en.wikipedia.org/wiki/Porta-Color

   Porta-Color. General Electric 's Porta-Color was the first "portable" color television introduced in the United States in 1966. The Porta-Color set introduced a new variation of the shadow mask display tube. It had the electron guns arranged in an in-line configuration, rather than RCA 's delta arrangement. The main benefit of the in-line gun ...

5. Jeremiah Arkham - Wikipedia

   en.wikipedia.org/wiki/Jeremiah_Arkham

   Jeremiah Arkham is a fictional supervillain and the head of the Arkham Asylum in DC Comics, created by Alan Grant. Arkham was created in 1992, [1] and slowly "lost his mind" during his time in the Arkham Asylum, subsequently becoming the second Black Mask. [2] Though described as a sadist, [3][4] Arkham seems to believe his intentions are for ...

6. Bahtinov mask - Wikipedia

   en.wikipedia.org/wiki/Bahtinov_mask

   The Bahtinov mask is a device used to focus small astronomical telescopes accurately. Although masks have long been used as focusing aids, the distinctive pattern was invented by Russian amateur astrophotographer Pavel Bahtinov (Russian: Павел Бахтинов) in 2005. [1][2] Precise focusing of telescopes and astrographs is critical to ...

7. Multi-spectral camouflage - Wikipedia

   en.wikipedia.org/wiki/Multi-spectral_camouflage

   Multi-spectral camouflage is the use of counter-surveillance techniques to conceal objects from detection across several parts of the electromagnetic spectrum at the same time. While traditional military camouflage attempts to hide an object in the visible spectrum, multi-spectral camouflage also tries to simultaneously hide objects from ...