At CERN, some of the world's biggest and most complex machines
are used to study nature's tiniest building blocks, the fundamental
particles. By colliding these minute particles of matter, physicists
unravel the basic laws of nature. Keyhole is an educational project,
where high school students and the interested public can learn how
particles are accelerated and collided, and how the reaction products
of the collisions are detected and identified.
After having passed a quiz, the user is able to proceed to a measurement
on his/her own, investigating the decays of one of the heaviest
fundamental particles, the Z, using real data from the DELPHI experiment
at LEP, like in "Hands on CERN"
In order to run this program from
your hard disk or from a CD please save the
Java policy file as ".java.policy" to your home directory.
( For Windows2000/XP this should be "C:\Documents and Settings\YOURUSERNAME",
"C:\Winnt\Profiles\username"on Windows NT,
"C:\Windows" on singler-user on Windows 95 and 98 systems,
"C:\Windows\Profiles\username" on multiuser Windows 95 and 98 systems,
on Unix and Linux it is just "~". )
Otherwise the java applets won't work.
Please note, that in the Italian and Spanish
version only the project exercises have been translated. The
introduction is in English language.