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2. Ladder (option combination) - Wikipedia

   en.wikipedia.org/wiki/Ladder_(option_combination)

   [1] [2] Ladders are in some ways similar to strangles, vertical spreads, condors, or ratio spreads. [1] [3] [4] A long call ladder consists of buying a call at one strike price and selling a call at each of two higher strike prices, while a long put ladder consists of buying a put at one strike price and selling a put at each of two lower ...

3. Aspect ratio (image) - Wikipedia

   en.wikipedia.org/wiki/Aspect_ratio_(image)

   4:3 (1.33:1) (generally read as Four-Three, Four-by-Three, or Four-to-Three) for standard television for fullscreen aspect ratio 1.33:1 has been in use since the invention of moving picture cameras, and many computer monitors used to employ the same aspect ratio. 4:3 was the aspect ratio used for 35 mm films in the silent era.

4. List of common display resolutions - Wikipedia

   en.wikipedia.org/wiki/List_of_common_display...

   The difference is that whilst D1 has a 4:3 aspect ratio 960H has a 16:9 widescreen aspect ratio. The extra pixels are used to form the increased area to the sides of the D1 image. The pixel density of 960H is identical to standard D1 resolution so it does not give any improvement in image quality, merely a wider aspect ratio.

5. Display aspect ratio - Wikipedia

   en.wikipedia.org/wiki/Display_aspect_ratio

   Most televisions were built with an aspect ratio of 4:3 until the late 2000s, when widescreen TVs with 16:9 displays became the standard. [2] This aspect ratio was chosen as the geometric mean between 4:3 and 2.35:1, an average of the various aspect ratios used in film. [3]

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   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

7. Twin-lead - Wikipedia

   en.wikipedia.org/wiki/Twin-lead

   Ladder line is an older, simpler form of parallel-wire line, often called open wire line. ... a balun with a 4:1 ratio is commonly used. Its purpose is double: First ...