1unknownpleasures(6x)          XScreenSaver manual         unknownpleasures(6x)
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NAME

6       unknownpleasures  -  a  waterfall  graph  of the signal from pulsar PSR
7       B1919+21.
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SYNOPSIS

10       unknownpleasures [-display host:display.screen] [-visual visual] [-win‐
11       dow]  [-root] [-delay number] [-count number] [-speed number] [-resolu‐
12       tion number] [-amplitude number] [-noise number] [-mask file]  [-no-or‐
13       tho] [-buzz] [-wireframe] [-fps]
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DESCRIPTION

16       PSR  B1919+21  (AKA  CP  1919)  was the first pulsar ever discovered: a
17       spinning neutron star emitting a periodic  lighthouse-like  beacon.  An
18       illustration of the signal received from it was published in Scientific
19       American in 1971, and later in The Cambridge Encyclopedia of  Astronomy
20       in  1977, where it was seen by Stephen Morris, the drummer of Joy Divi‐
21       sion, and was consequently appropriated by Peter Saville for the  cover
22       of the band's album "Unknown Pleasures".
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OPTIONS

25       -visual visual
26               Specify  which  visual  to use.  Legal values are the name of a
27               visual class, or the id number (decimal or hex) of  a  specific
28               visual.
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30       -window Draw on a newly-created window.  This is the default.
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32       -root   Draw on the root window.
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34       -delay number
35               Per-frame  delay,  in  microseconds.  Default: 30000 (0.03 sec‐
36               onds).
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38       -speed number
39               Animation speed. 2 for twice as fast, 0.5 for half as fast.
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41       -count number
42               Scanlines (vertical resolution).  Default: 80.
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44       -resolution number
45               Horizontal Resolution, Default: 100.
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47       -amplitude number
48               Height of the waves, 0 - 1.0.  Default: 0.13.
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50       -noise number
51               How noisy the signal is. 2 for twice as noisy, 0.5 for half  as
52               noisy.
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54       -mask file
55               Use  the  given image file as a clipping mask against the data.
56               A high contrast image of around  256x256  works  best.   Signal
57               peaks appear in the dark areas.
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59       -ortho | -no-ortho
60               Whether to use an orthographic projection.
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62       -buzz | -no-buzz
63               Whether each line should seethe with noise.
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65       -wireframe | -no-wireframe
66               Render in wireframe instead of solid.
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68       -fps | -no-fps
69               Whether  to  show  a frames-per-second display at the bottom of
70               the screen.
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ENVIRONMENT

73       DISPLAY to get the default host and display number.
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75       XENVIRONMENT
76               to get the name of a resource file that  overrides  the  global
77               resources stored in the RESOURCE_MANAGER property.
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SEE ALSO

80       X(1), xscreensaver(1)
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83       Copyright © 2013-2018 by Jamie Zawinski.  Permission to use, copy, mod‐
84       ify, distribute, and sell this software and its documentation  for  any
85       purpose  is  hereby  granted without fee, provided that the above copy‐
86       right notice appear in all copies and that both that  copyright  notice
87       and this permission notice appear in supporting documentation.  No rep‐
88       resentations are made about the suitability of this  software  for  any
89       purpose.  It is provided "as is" without express or implied warranty.
90

AUTHOR

92       Jamie Zawinski.
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96X Version 11               6.00-4.fc34 (05-May-2021)      unknownpleasures(6x)
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