Phase diagram can be constructed that show the effect of more than two variables on the phase of a substance. Phase diagrams can use other variables in addition to or in place of temperature, pressure and composition, for example the strength of an applied electrical or magnetic field, and they can also involve substances that take on more than just three states of matter. One type of phase diagram plots temperature against the relative concentrations of two substances in a mixture called a "binary phase diagram", as shown at right. Such a mixture can be either a solid solution, eutectic or peritectic,
The Heart Is a Lonely Hunter (Once Upon a Time) Hunter" received mixed reviews from television critics. TV Fanatic writer C. Orlando enjoyed the episode, remarking "I love "Once Upon a Time" because it's like a mini-movie every week and I'm completely enthralled by this intriguing other world filled with characters that feel familiar yet completely new." He called the ending scene "heartbreaking." IGN writer Amy Ratcliffe rated the episode 9/10, giving particular praise to Jamie Dornan's ability to be "magnetic in every scene." Ratcliffe called his backstory her favorite fairytale of the series up to that point. Television Without Pity's Cindy McLennan wished they had not killed Graham, but