Ferns Edit. In most ferns, gametophyte is a photosynthetic free living organism called a prothallus. For example, in the leptosporangiate fern Dryopteris, the gametophyte is a free-living, autotrophic prothallus that produces gametes and maintains the sporophyte during its early multicellular development.
It is therefore an object of the present invention to provide a gyro stabilized center tracking vehicle, of reduced complexity in which the gyro Spin axis is maintained in its normal position by forces reacting against the earth, and in which these forces are minimized by torquing the gyro frame about its pivot axis.nother object of the invention is to provide a gyro stabilized center-tracking trail vehicle in which a gravity sensitive mass applies a torque to the gyro frame in a direction to erect the vehicle upon tilt from a vertical or plumb line attitude.
A gyroscope (from Greek Î³á¿¦ÏÎ¿Ï guros, gÃ»ros circle and ÏÎºÎ¿ÏÎ­Ï, skopeÅ skopÃ©Å) to look is a spinning wheel or disc in which the axis of rotation is free to assume. Any orientation, when rotating the orientation of this axis is unaffected by tilting or rotation of, the mounting according to the conservation of. angular momentumn the 1860s, the advent of electric motors made it possible for a gyroscope to spin indefinitely; this led to the first prototype heading indicators, and a rather more complicated device, the gyrocompass. The first functional gyrocompass was patented in 1904 by German inventor Hermann Anschuetz-AnschÃ¼tz. kaempfe