Abstract: A mobile terminal is a transformable terminal such as a sliding mobile telephone and a folding mobile telephone. The mobile terminal includes a sensor for detecting whether or not the mobile terminal is in a predetermined form. When keys for entering characters are exposed and the sensor detects that the mobile terminal is in the predetermined form, the mobile terminal displays a reply mail. When the sensor detects that the mobile terminal is not in the predetermined form, the mobile terminal displays the received mail. Thus, the mobile terminal can switch display content between the reply mail and the received mail by a simple operation of changing a form of the mobile terminal.

Abstract: A mobile terminal is a transformable terminal such as a sliding mobile telephone and a folding mobile telephone. The mobile terminal includes a sensor for detecting whether or not the mobile terminal is in a predetermined form. When keys for entering characters are exposed and the sensor detects that the mobile terminal is in the predetermined form, the mobile terminal displays a reply mail. When the sensor detects that the mobile terminal is not in the predetermined form, the mobile terminal displays the received mail. Thus, the mobile terminal can switch display content between the reply mail and the received mail by a simple operation of changing a form of the mobile terminal.

Abstract: A self-acting air bearing includes a housing, a shaft member supported in the housing, a cylindrical member which is installed around the shaft member coaxially and rotatably, and which rotates and generates a dynamic air pressure and thereby the cylindrical member is floatingly supported from the shaft member. In the bearing, concavities and convexes are formed at a same interval in a peripheral direction in either an outer peripheral surface of the shaft member or an inner peripheral surface of the cylindrical member, and a wave of one cycle between a beginning position of the concavity and an ending position of the convex is a harmonic wave. A bearing with high stability at high speed and high accuracy and which has high stability at high speed and low unbalance vibration can be achieved.