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Contents
#!/usr/bin/env ruby
require("gsl")
include GSL::CONST::MKSA
puts("In MKSA unit")
c = SPEED_OF_LIGHT;
au = ASTRONOMICAL_UNIT;
minutes = MINUTE;
# distance stored in meters
r_earth = 1.00 * au;
r_mars = 1.52 * au;
t_min = (r_mars - r_earth) / c;
t_max = (r_mars + r_earth) / c;
printf("light travel time from Earth to Mars:\n");
printf("c = %e [m/s]\n", c)
printf("AU = %e [m]\n", au)
printf("minutes = %e [s]\n", minutes)
printf("minimum = %.1f minutes\n", t_min / minutes);
printf("maximum = %.1f minutes\n\n", t_max / minutes);
include GSL::CONST::CGSM
puts("In CGSM unit")
c = SPEED_OF_LIGHT;
au = ASTRONOMICAL_UNIT;
minutes = MINUTE;
# distance stored in meters
r_earth = 1.00 * au;
r_mars = 1.52 * au;
t_min = (r_mars - r_earth) / c;
t_max = (r_mars + r_earth) / c;
printf("light travel time from Earth to Mars:\n");
printf("c = %e [cm/s]\n", c)
printf("AU = %e [cm]\n", au)
printf("minutes = %e [s]\n", minutes)
printf("minimum = %.1f minutes\n", t_min / minutes);
printf("maximum = %.1f minutes\n", t_max / minutes);
Version data entries
16 entries across 16 versions & 4 rubygems