Abstract: A method and system are provided for accurately determining the point of impact of a bullet on a shooting disc or target plane and optionally the position of the shooter, wherein a number of light curtains are used for registering time instants of the passage of the bullet projectile through predetermined light planes by detecting the shadow cast by the bullet. Differences between the measured times and/or the measured times themselves are then used for calculating the velocity of the bullet and the points at which the trajectory of the bullet intersects the light planes and the target plane, which may be arranged or located behind or in front of the target disc/target disc arrangement of the system having the particular pattern of light curtains, allowing for the calculation of the centre impact point of the bullet on the shooting disc or target plane in 3D.

Abstract: A method and system are provided for accurately determining the point of impact of a bullet on a shooting disc or target plane and optionally the position of the shooter, wherein a number of light curtains are used for registering time instants of the passage of the bullet projectile through predetermined light planes by detecting the shadow cast by the bullet. Differences between the measured times and/or the measured times themselves are then used for calculating the velocity of the bullet and the points at which the trajectory of the bullet intersects the light planes and the target plane, which may be arranged or located behind or in front of the target disc/target disc arrangement of the system having the particular pattern of light curtains, allowing for the calculation of the centre impact point of the bullet on the shooting disc or target plane in 3D.

Abstract: Carrier for growing macroalgae, with an element provided for the growth of seeds deposited thereon, and having elements for suspension in a water volume. The carrier is a sheet provided with apertures allowing flow of water from one side to the other, the surface of the sheet having a structure which will retain spores and seeds. The invention is also directed to an arrangement for suspending such a carrier with a device connected to at least one part of an edge of the carrier. The device may be a platform submersed in the sea, to which the carrier is attached.