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The image dates from 1971. I am going to guess it was simply drawn on a plotter, using a hidden-line removal algorithm. The same could have been done on a vecto
by Luc 13y ago
The image dates from 1971. I am going to guess it was simply drawn on a plotter, using a hidden-line removal algorithm. The same could have been done on a vector monitor, but it seems the image has the wrong dimensions for that.
To give you an idea of what was possible in 1971, the arcade machine Computer Space was released that year: http://en.wikipedia.org/wiki/Computer_Space http://en.wikipedia.org/wiki/Computer_Space
- laumars 13y agoActually you're both wrong. The image is from the late 60s and isn't one single plotted graph but actually multiple different measurements that have then been stacked to make comparison easier. This article does actually explain this, but I can forgive you for not getting that far as it's the very last item on his blog and appears only to have been mentioned as an after thought.
- Luc 13y agoOkay, so it was probably created in 1969 or 1970 and only published in 1971. I think you've misunderstood what we are talking about - the method by which the graphic was created. Which I assume to have been a plotter fed instructions by a program that removed hidden lines from the graphs.
- raverbashing 13y agoAnd here's the relevant citation EIGHTY SUCCESSIVE PERIODS of the first pulsar observed, CP1919 (Cambridge pulsar at 19 hours 19 minutes right ascension), are stacked on top of one another using the average period of 1.33730 seconds in this computer-generated illustration produced at the Arecibo Radio Observatory in Puerto Rico.
- Someone 13y agoA method for making such plots lives on in ImageJ (a Java version of NCSA Image). For example, see http://rsbweb.nih.gov/ij/docs/guide/146-30.html#toc-Subsection-30.12 http://rsbweb.nih.gov/ij/docs/guide/146-30.html#toc-Subsecti....