If humanity wanted to broadcast its existence to intelligent life forms that might be out in the galaxy listening, a modulatedbeam of neutrinos would be a good way of doing so.
Dr Learned, however, reckons the pulse-period of a Cepheid could be modulated by a suitable beam of neutrinos.
而且，伦德博士测算出“造父变星”的脉动周期能够用适当的微中子束加以调整。
3
In the paper. the interference intensity of signal laser beam and the reference one is carried out in detail on a heterodyne laser probe with amplitude modulated laser source.