The clotting process is encouraged by certain blood particles (platelets and plasma proteins). Hemophilia occurs when you have a deficiency in one of these clotting factors. Hemophilia is inherited. However, about 30 percent of people with hemophilia have no family history of the disorder.
A rendering of the magnetic field lines of Earth's magnetosphere. A magnetosphere is the region of space surrounding an astronomical object in which charged particles are controlled by that object's magnetic field. Near the surface of many astronomical objects, the magnetic field resembles that of a dipole.
HOW IS AC VOLTAGE PRODUCED? relative motion between the conductor and the magnetic field. In portable generators the above motion is created by an internal combustion engine. Note that although the terms generator and alternator are often used interchangeably, the former often refers to a set combining an engine and an alternator.