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Invisible ink, also known as security ink or sympathetic ink, is a substance used for writing, which is invisible either on application or soon thereafter, and can later be made visible by some means, such as heat or ultraviolet light.
UV marker with UV led lamp. An ultraviolet (UV) marker is a pen whose marks are fluorescent but transparent; the marks can be seen only under an ultraviolet light.They are commonly used in security situations to identify belongings or to prevent the reproduction of unauthorized banknotes.
A device using a transparent display will have much higher resolution and will display much more realistic augmented reality than video augmented reality, which takes video, adds its own supplement to it, and then displays that onto the screen. [27] It could be simpler to display the addition onto the see-through screen instead.
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First but foremost, the Samsung The Frame TV displays art so effectively thanks to its anti-reflection technology. The screen has a matte finish so you won't get a pesky glare from lamps or bright ...
Each YouTube video is accompanied by a piece of HTML that can be used to embed it on any page on the Web. [95] This functionality is often used to embed YouTube videos in social networking pages and blogs. Users wishing to post a video discussing, inspired by, or related to another user's video can make a "video response".
A hiker was found alive this week in the remote wilderness of northwestern Canada, where he had been lost for more than five weeks, authorities said.
Almost all modern-day TV sets have simplified CPUs and memory chips for basic functions such as channels and video settings, and video timing for LCD flat panels; however these examples are not sophisticated enough to qualify as significant examples. Other computer parts are used for real-time playback of DVDs on combo TVs with DVD player (and ...