A physical change is a change in the physical properties of a substance without a change in its chemical composition.Physical change is usually reversible and temporary.
The Japanese Tea presentation is a glorious example. But so is an English High Tea, or a Berber meal, an Oktoberfest, many of the Orthodox weddings or a good Southern Barbecue.
Communication require two entities viz. sender and receiver. Even this reply is an example of communication. The question was asked by the sender to the people in this forum. I had chosen to receive...