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Vibrating feeder is also called vibratory feeder or ore vibrating feeder.
Feed opening: 150×250-300×1300mm
Applied Materials: Pebbles, granite, basalt, iron ore, limestone, quartz stone, gangue, construction waste.
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A lot goes into determining the best viewing distance, and there are several different criteria you can use. Aside from size, things like resolution and even how strong your eyesight is can affect how you see the screen. Because everyone's eyesight is different, this is less an exact science and more of a general guide based on scientific principles of vision and resolution
Since resolutions found today are almost exclusively 4k (Ultra HD), it takes a very big TV watched from very close to see imperfections related to the resolution. Because of this, you can sit closer to your TV than you would with lower resolutions and have a more immersive experience. Think of it like a movie theater: the more a TV fills your view, the more immersive it will feel
That doesn't mean you should be sitting a foot away from your TV. Having the largest screen possible isn't always ideal. The human visual system has a total horizontal field of view of about 200 degrees, although a portion of that is peripheral vision. While it makes some sense to get as large a TV as you can for movies, not all content is made to fill the entire field of view. This becomes very apparent if you try to watch sports from up close while fixating on a single part of the screen, which quickly starts to feel nauseating
This is generally good guidance, but people who use their TVs mostly for watching movies might benefit from sitting a bit closer to get a more theater-like experience. The SMPTE "reference" position for movie theaters and the THX recommendation is about 40°. The minimum angle of vision works well for most usages, though, and sitting at a distance where the screen fills 30° of your horizontal field of view should be comfortable for most people
It's also worth noting that this angle assumes a single person is viewing the TV head-on at eye level. Not all living room setups meet these conditions exactly, so it's best to use this as a guideline only. Learn more about viewing angles
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