how did he do it?
In 1886, Heinrich Rudolf Hertz successfully discovered Electromagnetic Radiation.
He used a 1 mm thick copper wire and formed it into a circle with a diameter of 7.5 cm with a small brass sphere and a pointed wire on each end of the copper wire to make a receiver.He designed a way where the two ends of the wire can control the current of electricity that goes back and forth. The presence of the charge can be seen when a spark is produced in between the sphere and pointed end. The receiver was made to have almost the same periods as of the charge in the transmitter to prove that radiation was emitted.
He used a high voltage induction coil, a condenser and a spark gap to make a transmitter. The presence of the charge can also be seen when a spark is produced in the spark gap. The frequency of the sparks can be determined by the values of the capacity and induction coil. We now call a radio wave transmitter an LC oscillator.
This experiment proved James Maxwell's theory of the presence of electromagnetic radiation.
He used a 1 mm thick copper wire and formed it into a circle with a diameter of 7.5 cm with a small brass sphere and a pointed wire on each end of the copper wire to make a receiver.He designed a way where the two ends of the wire can control the current of electricity that goes back and forth. The presence of the charge can be seen when a spark is produced in between the sphere and pointed end. The receiver was made to have almost the same periods as of the charge in the transmitter to prove that radiation was emitted.
He used a high voltage induction coil, a condenser and a spark gap to make a transmitter. The presence of the charge can also be seen when a spark is produced in the spark gap. The frequency of the sparks can be determined by the values of the capacity and induction coil. We now call a radio wave transmitter an LC oscillator.
This experiment proved James Maxwell's theory of the presence of electromagnetic radiation.