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2. Active shutter 3D system - Wikipedia

   en.wikipedia.org/wiki/Active_shutter_3D_system

   However, modern LC glasses generally work in higher refresh rates and eliminate this problem for most people. First, the method only worked with CRT monitors. With widespread availability of 3D TV sets and flat computer screens in the 2010–2013 period, [4] flat-panel monitors support high-enough refresh rates to work with some LC shutter ...

3. Autostereoscopy - Wikipedia

   en.wikipedia.org/wiki/Autostereoscopy

   Autostereoscopy is any method of displaying stereoscopic images (adding binocular perception of 3D depth) without the use of special headgear, glasses, something that affects vision, or anything for eyes on the part of the viewer. Because headgear is not required, it is also called "glasses-free 3D" or "glassesless 3D".

4. Anaglyph 3D - Wikipedia

   en.wikipedia.org/wiki/Anaglyph_3D

   Low-power reading glasses worn along with the paper glasses also sharpen the image noticeably. The correction is only about 1/2 + diopter on the red lens. However, some people with corrective glasses are bothered by difference in lens diopters, as one image is a slightly larger magnification than the other.

5. Sloper antenna - Wikipedia

   en.wikipedia.org/wiki/Sloper_Antenna

   The Sloper Antenna is a slanted Dipole antenna. [1] [2] ... Due to the low-angle radiation pattern this antenna has, it performs well for long distance contacts (QSOs ...

6. Television antenna - Wikipedia

   en.wikipedia.org/wiki/Television_antenna

   A short antenna pole next to a house Multiple Yagi TV aerials. Antennas are commonly placed on rooftops and sometimes in attics. Placing an antenna indoors significantly attenuates the level of the available signal. [19] [20] Directional antennas must be pointed at the transmitter they are receiving; in most cases great accuracy is not needed ...

7. Fractal antenna - Wikipedia

   en.wikipedia.org/wiki/Fractal_antenna

   Log-periodic antennas are arrays invented in 1952 and commonly seen as TV antennas. This was long before Mandelbrot coined the word fractal in 1975. [4] Some authors (for instance Cohen) [5] consider log-periodic antennas to be an early form of fractal antenna due to their infinite self similarity at all scales.

8. Indoor antenna - Wikipedia

   en.wikipedia.org/wiki/Indoor_antenna

   An indoor antenna is a type of radio or TV antenna placed indoors, as opposed to being mounted on the roof. They are usually considered a simple and cheap solution to receive transmissions. An indoor antenna is prone to picking up electrical noise, but digital broadcasts are resistant to this noise.

9. Inverted vee antenna - Wikipedia

   en.wikipedia.org/wiki/Inverted_vee_antenna

   For example, a dipole antenna for the 80 meter band requires a ground length of about 140 feet (43 m) from end to end. An inverted vee with a 40-foot (12 m) apex elevation requires only 115 feet (35 m). For radio amateurs living on small parcels of property, such savings can make it possible to use the lower frequency amateur bands.