This page allows you to perform various kinds of “runs” to determine
if you are able to retroactively influence the output of a
hardware random number generator based on
radioactive decay. Your browser must support
Java™ to run this
experiment; if you do not see a bell curve with a moving pointer at the left
of this paragraph, your browser either does not implement Java, or
Java applets have been disabled. Fewer and fewer browsers support
Java: if you have a modern browser, you'll probably be able to use the
HTML5 version of this experiment.
Clock face
Pendulum