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2. Vitascope - Wikipedia

   en.wikipedia.org/wiki/Vitascope

   Vitascope was an early film projector first demonstrated in 1895 by Charles Francis Jenkins and Thomas Armat. They had made modifications to Jenkins' patented Phantoscope, which cast images via film and electric light onto a wall or screen. The Vitascope is a large electrically-powered projector that uses light to cast images.

3. Vivitek Qumi - Wikipedia

   en.wikipedia.org/wiki/Vivitek_Qumi

   The Qumi is a portable, 3D, LED-powered projector based on Texas Instruments' 3D-Ready DLP Pico HD chipset [2] and Luminus's Phlatlight PT-39 LED light. [3] Its native resolution is 1280×800, and it is able to project up to 1920×1080. [4] The projector has a built-in microSD card slot and a remote control for the built-in media player.

4. List of obsolete technology - Wikipedia

   en.wikipedia.org/wiki/List_of_obsolete_technology

   Obsolete technology Replacement Still used for Bathing machine: No longer required due to changing social standards of morality Hourglass: Clock: Tasks where a fixed amount of time can be measured with a low-tech solution: Exposure time tracker in saunas (where electronics might be damaged by the heat or ultraviolet light); retro kitchen timers, board games, other short-term timers.

5. Carbide lamp - Wikipedia

   en.wikipedia.org/wiki/Carbide_lamp

   They were once favoured for their relative illumination per mass of fuel compared to battery-powered devices. [ citation needed ] Before the advent of high-intensity light-emitting diode (LED) illumination with lithium-ion batteries, carbide also had two important advantages over the alternative of miners electric lamps.

6. Maxell - Wikipedia

   en.wikipedia.org/wiki/Maxell

   Maxell was formed in 1960, when a dry cell manufacturing plant was created at the company's headquarters in Ibaraki, Osaka.In 1961, Maxell Electric Industrial Company, Limited was created out of the dry battery and magnetic tape divisions of Nitto Electric Industrial Company, Limited (now Nitto Denko Corporation).

7. List of Panasonic video projectors - Wikipedia

   en.wikipedia.org/wiki/List_of_Panasonic_video...

   Model [1] [2] Release Date Maximum resolution Aspect Ratio Screen Size (Diagonal) Lumens (ANSI) Contrast Light Source Display Method Inputs Notes PT-AE100 February 2002