The exhibits depicting Tesla's inventions in the field of currents of high frequency and high potential are the most interesting ones in the Museum.

It seems today almost inconceivable that Tesla a century ago succeeded to produce currents of several tens of thousands cycles and several million volts. With these currents he experimented in his laboratory in New York and later at Colorado Springs. The results of these experiments are even today inspiring for researchers in the whole world, especially after Nikola Tesla Museum has published his "Colorado Springs Notes".

In the contemporary world [such oscillators and] high-frequency currents are being applied in radio engineering, industry and medicine, in accordance with Tesla's farsighted anticipation.

The high-frequency oscillator coupled with a great transformer is placed in the middle of the room. It was built in 1955, in accordance with the technical descriptions from Colorado Springs. Its potential reaches roughly 200 000 volts and for half a century impresses visitors and fascinates children.

Beside the great oscillator there is also a smaller one, such as Tesla used in experiments with electrical discharges in tubes filled with rarefied gases. The results of these experiments laid foundations for the contemporary fluorescent illumination. These experiments are not sufficiently known even among specialists. Likewise it is also unknown that W. Roentgen was fascinated with X-ray images of human body he received from Tesla, obtained with X-ray tubes operated with high-frequency currents.

Tesla performed his most significant experiments with currents of high frequency and high potential in the field of wireless transmission of energy. The model of four resonant circuits displays the results which laid the foundations of wireless transmissions. Next to the model is the quotation from the verdict of the U.S. Supreme Court of 1943, granting the inventions of Nikola Tesla in this field precedence over those of G. Marconi.