A transistor and method of fabricating the transistor are disclosed. The incinerator pre-fill chamber includes an elongated case having a first opening aligned in sealing relationship with a second opening disposed in the lid of the incinerator such that when said pre-fill chamber is mounted on the incinerator lid the combustible material can pass from said pre-fill chamber through said first and second openings. Differently polarized waves which are reflected back from the person are collected and measured. The medical device further comprises a first electrode and a second electrode, both of which are electrically connected to the photovoltaic cell. The calculating step calculates the internal refractive index distribution from which a shape component of the object is removed by using the measurement results of the first and second transmitted wavefronts, and first and second reference transmitted wavefronts of a reference object to be placed at positions identical to the first and second placement positions. The bow sight lens assembly is freely rotatable about a pivot axis disposed across a region encompassed by the supporting structure.