Don't base anything on the rotation of the reel, and for reasons of reduced power requirements without needing to have it centered precisely on the axis of rotation, put the reel on a vertical axis rotating in a horzontal plane.
Assuming that the ribbon is not made of tissue paper and can...
Makes me think of the Halifax Harbor Ferry which uses a circulating paddle drive. I think it could push enough water to make a difference if you parked it in a river channel. I don't know about prop drives but I suspect that if you anchor a boat securely and just use the engine to push water...
http://en.wikipedia.org/wiki/Thermal_depolymerization" from most organic materials so I think the answer is well known. There will always be oil as long as there is waste to convert and people willing to pay for it - even in a twenty five years when all the natural resource deposits have been...
But you also need to work out either the Voltage and Current sources or the loads but not both.
Sources and loads should cancel each other out.
The power absorbed by the 2V at 1Amp is 2 Watts.
The power from the current source is 6Volts and 2 Amps equals 12 Watts.
10 Watts total for circuit...
Changing the tectonic loading is a possible way to change stress on the faults and cause earthquakes. For example melt Gigatonnes of Ice from the polar regions and add it to the Oceans and it could theoretically cause a whole lot of Earthquakes around the worlds coastal regions.
It would be...
Two sides would be plenty.
Doppler shift maximum averaging will give you a good enough indication of speed differentials.
Basically average the approach and departure maximums and that will cancel out the speed of your sattelite. Your doppler shift should diverge farthest when the...
You would do better to put a laser on each side of the satellite and rotate the whole assembly. Again, Gyroscopes would be a major part of this type of control improvement.
Now that also begs is it better to make one side the main sensor side and get your 360 coverage from the satellite...
Lidar would be less trouble I think.
A high quality focus at 250mW to 500mW should reach 10 miles through space and with sensitive detectors you would spot reflections off of brighter or larger objects at that range.
If you used phased array detection your resolution would be more than...