Irrational number number to ratios of continuous magnitude. In his commentary on Book 10 of the "Elements", the Persian mathematician Al-Mahani (d. 874/884) examined and classified quadratic irrationals and cubic irrationals. He provided definitions for rational and irrational magnitudes, which he treated as irrational numbers. He dealt with them freely but explains them in geometric terms as follows: In contrast to Euclid's concept of magnitudes as lines, Al-Mahani considered integers and fractions as rational magnitudes, and square roots and cube roots as irrational magnitudes. He also introduced an arithmetical approach to the concept of irrationality, as he attributes the following to irrational
Fear Itself (K-9) Fear Itself (K-9) "Fear Itself" is an episode in the Australian/British science fiction drama television series "K-9". It is the sixth episode of Series 1. London is out of control, and riots erupt due to a strange irrational fear that fills the air. The focal point of the paranoia is based in an old junkyard where a strange alien consciousness is at work. Darius is in a junkyard to find a device when he is approached by two strange vagrants who say the junkyard belongs to them and tell Darius to leave. They lock Darius in a wardrobe. When he