English: Full and half-wave rectification of a sinusoidal wave (3 cycles). This shows a sine wave, then half-wave and full-wave rectified versions of it.
Русский: Одно- и двухполупериодное выпрямление синусоидального напряжения
Then I opened the rectified_waves.ps file in a text editor to edit the line colors and linestyles, as per this descriptionarchive copy at the Wayback Machine. This avoids needing to open in proprietary software, and really isn't that difficult (especially if you don't know the commands in the proprietary software either). ;-) Identify the lines easily by their color (the arrow is currently magenta and I want it to be black. Ah, there is the entry with 1 0 1, red + blue = magenta) or by using the gnuplot linestyle−1. (For instance, gnuplot's linestyle 3 corresponds to the ps file's /LT2.) Then you can edit the colors and dashes by hand.
Enter 500 under Resolution (it doesn't say "DPI" but I think that's what it means)
Uncheck Try bounding box (since the bounding box cuts off the edge, unfortunately. You can try with the bounding box first.)
Enter large values for Width and Height
Check Color
Check Strong anti-aliasing for both graphics and text
Crop off extra whitespace (Shift+C if you can't find it in the toolbox)
Possibly need to rotate it: Click Image → Transform → Rotate 90 degrees clockwise
Filters → Blur → Gaussian blur at 2.0 px (No need to blur if you use strong anti-aliasing during conversion. I see no significant difference between end results.)
Image → Scale Image...
Width and Height at 25%
Cubic interpolation
You can view at normal size if you want by pressing 1, Ctrl+E
GNU 자유 문서 사용 허가서 1.2판 또는 자유 소프트웨어 재단에서 발행한 이후 판의 규정에 따라 본 문서를 복제하거나 개작 및 배포할 수 있습니다. 본 문서에는 변경 불가 부분이 없으며, 앞 표지 구절과 뒷 표지 구절도 없습니다. 본 사용 허가서의 전체 내용은 GNU 자유 문서 사용 허가서 부분에 포함되어 있습니다.http://www.gnu.org/copyleft/fdl.htmlGFDLGNU Free Documentation Licensetruetrue
이 라이선스 중에서 목적에 맞는 것을 선택하여 사용할 수 있습니다.
(In short, this means that you can copy and modify the image freely as long as you provide attribution; preferably in the form of a link back to this page.)