Some synchrotron radiation facilities scatter laser light off the stored electron beam. Most known cosmic radio sources emit synchrotron radiation. Synchrotrons are unique devices because they produce extraordinary synchrotron light (synchrotron radiation). Using synchrotron radiation frequently has specific requirements for X-ray crystallography. Active galactic nuclei have jets of charged particles which emit synchrotron radiation. They normally produce bremsstrahlung in X-rays and synchrotron radiation in radio. They emit jets of charged particles which emit synchrotron radiation in the radio spectrum. The largest component of each synchrotron is its electron storage ring. See for example Bremsstrahlung and synchrotron light. Its name refers to its first project, an electron synchrotron. EUV light can also be emitted by free electrons orbiting a synchrotron. It is also an X-ray and UV synchrotron photon source. In the 1950s, Cornell physicists became the first to study synchrotron radiation. There is no way of determining the particle content directly from observations of synchrotron radiation. The most powerful modern particle accelerators use versions of the synchrotron design.