Abstract: An exemplary embodiment has been made in an effort to provide a distance measuring apparatus, including: an output unit configured to output information; a memory configured to store map information of golf courses; a location acquiring sensor configured to acquire a current location; a distance measuring sensor configured to measure a distance to a target; a slope sensor configured to measure a tilt angle; and a control unit configured to read map information of the golf course corresponding to the current location from the memory, to calculate a first distance from the current location to a first point on the golf course by using the map information, to calculate a horizontal distance to the target by using the distance to the target and the tilt angle, and to output the horizontal distance to the output unit when the horizontal distance is within the first distance.

Abstract: Provided is a method for treating cancer using a porous silicon nanobomb. The porous silicon nanobomb can be exploded by NIR light irradiation at a low intensity to selectively destroy cancer cells. Also, porous silicon itself shows good biocompatibility and biodegradability. Thus, the present invention can be used as an efficient method for treating cancer without the accumulation of toxic side effects.