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.
Gyroscopes are mostly used as a basis for inertial navigation systems, meaning that with the help of three very sensitive accelerometers one can detect the motion of the vehicle on which the gyroscope is mounted, on all three axes.t works on the principle of conservation of angular momentum, and consists of a spinning wheel supported on an axis that is free to move on its own. The spinning wheel, or rotor, is mounted on a pivoting support that allows the rotation around a single axis, called a gimbal.