Abstract: The object of the invention is a skeletal method utilizing electromagnetic waves to be utilized at least in one of skeletal actuation, skeletal detection and skeletal therapy. In the method is performed at least one of first and second method steps, where in the first method step is generated by means of electromagnetic waves at least one mechanical wave in at least one generation location into the skeleton through soft tissue. In the second method step is detected by means of electromagnetic waves skeletal vibrations due to at least one mechanical wave, is recorded the detected at least one mechanical wave in at least one recording location to form mechanical wave information, and distance of said at least one recording location from said at least one generation location is known, and further in the second method step is determined skeletal properties based on at least one recorded signal.

Abstract: The object of the invention is a skeletal method utilizing electromagnetic waves to be utilized at least in one of skeletal actuation, skeletal detection and skeletal therapy. In the method is performed at least one of first and second method steps, where in the first method step is generated by means of electromagnetic waves at least one mechanical wave in at least one generation location into the skeleton through soft tissue. In the second method step is detected by means of electromagnetic waves skeletal vibrations due to at least one mechanical wave, is recorded the detected at least one mechanical wave in at least one recording location to form mechanical wave information, and distance of said at least one recording location from said at least one generation location is known, and further in the second method step is determined skeletal properties based on at least one recorded signal.

Abstract: Designs of prior art art not usable in efficient dry-run target practice with hand firearms. The greatest drawbacks are, for instance, that it is not possible by the method to monitor the result of the dry-run training; that the method or means is not liable on ordinary guns without special measures or not at all or the method is so complicated that its implementation in practice causes that the means is too expensive to be in the personal possession and use of shooters. In order to eliminate said drawbacks, the invention is mainly characterized in that by a transmitter/receiver means attachable to conventional arms is emitted an optical beam towards a surface serving as the target which is set off from its surroundings due to its optic radiation reflecting properties relative to those of its surroundings, the hitting or missing of the beam being observed with the receiver on the basis of the return beam.

Abstract: A procedure for analyzing the reciprocating motion of a given object or its motion component transversal to the object's direction of travel, based on the passage time of electromagnetic radiation in the optical range and wherein by a light source, such as a laser or photodiode, a periodic light beam is directed on the object. The change of the passage times of light pulses that have travelled to the object and been reflected back therefrom, in relation to a given reference value, is transformed into an analog voltage proportional to the change.

Abstract: An optic method for shooting practice in which a narrow light beam is used instead of a bullet. The light beam is provided by a light transmitter (2) of a visible or infrared area attachable to a gun, the ray transmitted by which transmitter is observed with a spot-sensitive optic detector (5, 6) from which is received continuous position information during aiming and discharging as well as, when desired, also the hit and the direction at the discharge instant (9). (FIG. 1).