missile-borne and non-missile-borne "countermeasures" equipment as radar jamming devices, underwater countermeasures technology, beamriders, infrared homing systems
Water is such a great conductor of electricity the equipment should work great under water. Check the manual though to be sure.
yes, the technical name is a photocell or photovoltiac. it looks like a battery to the stuff it powers.
There are myriads of meters components to do measurements the basic is the oscilloscope and multimeter.
For released defendant's or prisoners awaiting trial - it is a GPS transponder that is attached to the person's body (usually the ankle) which shows their exact location at all times to the...