Here is something to think about. As radio frequencies get higher they act more light and are absorbed or reflected. In Ham radio, re-peters are set on high towers or mountains because line of sight communication is only possible at 147mhz. and above under normal conditions. Try holding a...
Radio waves are magnetic lines of force and will go through almost anything without loosing all their strength. Try putting a magnet close to the outside of the box then dangle a nail on a string inside the box. Move the string and nail closer to the magnet and the string will deflect, if...
The speed of gravity is faster than the speed of light or it is a constant force that seems like it is faster than the speed of light. Einstein hypothetically did an experiment in which if the Sun were to loose it's gravity in an instant, the planets would instantly swing out of there orbits...
It's too bad that black holes got named as such. They are not holes at all, but the most condensed masses we know about as far from being a hole as anything can get. (That we know of so far.) Food for thought. If two of these masses got close enough to each other their gravitational pull...
Back in the days before solid state electronics we used vibrator power supplies to convert 12V DC to AC to operate mobile radios. There is also an apparatus called a dynamotor which is a combination of a DC motor and an AC generator these were used a lot by the military and during the 50s and...
When you run DC current through a coil you build a magnetic field in and around the coil. When the current is broken the field collapses, the magnetic lines of force in the field cut through the coil windings creating a new higher voltage than was induced resulting in higher current for a split...