As explained in Wikipedia: this is the process whereby two interacting oscillating systems, which have different periods when they function independently, assume the same period. The two oscillators may fall into synchrony, but other phase relationships are also possible.
These phase relationships also work with people, their relationships, in groups, and the tighter the relationship the more in sync they become. The fact that entrainment can happen with inanimate objects means it certainly can happen to humans. Women in the same house have been known to fall in sync with their menstrual cycle, and it can work on many different personal levels, also in business environments or sporting ones, anywhere at any time you can find synchronicity with the circumstances. In group meditations a feeling of at-one-ment can be felt and enhanced proportionally, and the study of unstable groups and their viral behavior is recognized by researchers, and I see it as a high intensity entrainment. Just from proximity and a willingness to surrender to the event seems to create all sorts of phase relationships whether it be good or bad.
During personal relationships we learn our partners cycle of happiness, setbacks, and activities and fall into a rhythm that coexists with those characteristics. A comfort zone is achieved that gives one a feeling of security, predictability, and chemistry. Both partners have to be open, and have a willingness to surrender and work within their weaknesses and strengths, in order to become one solid and well rounded entity. The ability to become a good receiver is essential to the equation because an open mind is a flexible ingredient that gives one the opportunity to grow and merge together. If the mind resists and fights for the ego, then the synchronicity and the subtle frequencies can’t fall into rhythm, and growth stops. Being in sync with your partner is the most peaceful and harmonious relationship possible. Arguments will be a relic of the past, and life seems almost surreal in the home, without any made up disturbances your able to float around most of life’s setbacks. A powerful team that can’t be denied is a team that relies on no individual power. One heart beat, its efficient, its easier, its natural, its alert, its productive, and its the most harmonious way of living with your partner.
The great business teams or sporting teams are that ones that know all of their weaknesses and strengths, come together to work on those weaknesses, enhance the positives, face the hardships together and surrender to the cause is a reflection of your earnestness. Every bit of personal sabotage, negativity, disappointments, personal merits, personal failures, stubborn attitudes or anything that props up the selfish ego that wants to stray into the self absorbed mind, must be surrendered for the cause. Nothing can penetrate the focus of the team and create disharmony within the group, they continue despite all that has transpired, and all the outside heat won’t make them trip or respond out of team character. Any relationships can have a bond like this which is shielded from outside influences so a balance is allowed to flourish within the union. A phase relationship forms from an easy synchronicity that fell naturally into place out of proximity and familiarity. Its all about success in an efficient manner, and by allowing the entrainment to prosper within you’ll feel impenetrable or unstoppable due to the strong connections from within the group.
The same holds true with the Guru and disciple relationship, which allows peace to flow through the group, if one is a good receiver and leaves themselves open to subtle frequencies they’ll find the peace noticeable and palatable. If the guru stops his or her mind and sits in the tranquility of the moment then peace has a chance to radiate through the whole room with the help of the good receivers passing it on. If people are resistant, fighting within or fighting with the teacher then no surrendering can take place. But even that road block can fall for a second and the silent mind wins the moment, then witnessing peace can take place. Surrendering restraints can happen to the most stubborn minds, and it can turn them on a dime with an epiphany, and this happens when one gives up the reigns. Face to face with their issues they realize its up to them to clear the way for more understanding, and give up the fight, after one taste of inner peace.