Abstract: An internally illuminated snowboard track for recreational areas or parks which are operated at night is made up of a continuous elongated transparent rail which is supported a predetermined distance above the ground by a base support member, and a light source extends longitudinally and internally of the rail to project light outwardly therefrom. A base stabilizer beneath the support member can either be planted in the snow or anchored to the ground surface in the track system may be inclined, curved, straight or provided with one or more bends. A snowboard ramp may be constructed in the same basic manner to serve as a jump for snowboarders.

Abstract: An internally illuminated snowboard track for recreational areas or parks which are operated at night is made up of a continuous elongated transparent rail which is supported a predetermined distance above the ground by a base support member, and a light source extends longitudinally and internally of the rail to project light outwardly therefrom. A base stabilizer beneath the support member can either be planted in the snow or anchored to the ground surface in the track system may be inclined, curved, straight or provided with one or more bends. A snowboard ramp may be constructed in the same basic manner to serve as a jump for snowboarders.

Abstract: An internally illuminated snowboard track for recreational areas or parks which are operated at night is made up of a continuous elongated transparent rail which is supported a predetermined distance above the ground by a base support member, and a light source extends longitudinally and internally of the rail to project light outwardly therefrom. A base stabilizer beneath the support member can either be planted in the snow or anchored to the ground surface in the track system may be inclined, curved, straight or provided with one or more bends. A snowboard ramp may be constructed in the same basic manner to serve as a jump for snowboarders.

Abstract: A circuit is disclosed for temperature compensating the output voltage thereof with respect to undesireable temperature induced signals from a pressure transducer and/or the circuit itself. The circuit comprises a pressure transducer, two operational amplifier stages, and an output stage. One operational amplifier is coupled between the pressure transducer and a summing node. Two compensation networks, one each coupled between the pressure transducer excitation input terminals and two voltage source terminals, nulls temperature induced voltages at the summing node.