Magnetic hematite is not a true hematite in terms of its mineral content. Actually a man-made magnetic material, the content of magnetic hematite varies between manufacturers. The Mineralogy Database found that one sample was a synthetic ceramic barium-strontium ferrite magnet..
Verb form: To LARP, LARPing, LARPed, etc. LARPs are a category of game in which players create characters and, acting as those characters, interact with other players and Storytellers/Game Masters to complete some sort of challenge, quest, or adventure.
Chirp. A chirp is a signal in which the frequency increases or decreases with time. In some sources, the term chirp is used interchangeably with sweep signal. It is commonly used in sonar and radar, but has other applications, such as in spread spectrum communications.