Nikola Tesla Books
Books written by or about Nikola Tesla
Colorado Springs
June 4, 1899
Telephony without wires.
General observations:
| Senders | one impulse several impulses |
for one telephone impulse. |
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| Receiver | several impulses one impulse |
for one telephone impulse |
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| Form of energy sender | Static action | Static Two currents attraction, repulsion Magnetic Cathode rays Heat rays Light rays Cathode mechanical action Deflection by mech. displacement |
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| Current action | |||||
| Rays | light heat Roentgen etc. |
Form of energy affecting receiver |
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| Magnetic action | |||||
| Sound action | |||||
| Instruments to be used | Static machine | Receiving instruments suited for the various transmitting instruments |
to be worked out | ||
| Induction coil | |||||
| Oscillator | single terminal two terminals |
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| Batteries, | |||||
| Dynamos (high frequency) |
alt. direct |
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| Condenser | Rheostatic. Mach. Oscillator |
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Arrangements of circuit etc. to be worked out.
28
June 4
The basic ideas on wireless energy transmission were explained by Tesla in 1393(6). Starting from the experimental results related to resonant events in the circuit with high frequency currents and energy transmission through one wire, Tesla came to the idea of wireless ("signal, or maybe even power, at any distance without the use of wires") transmission. Plans he showed consisted of the high frequency generator which was connected by one terminal to the ground, and by the other terminal to an elevated metal conductor-antenna. Disturbance caused by the transmitter is emitted around it and at a certain distance it will be able to excite the resonant LC circuit. By this plan Tesla established the foundations of telegraphy with continuous waves(12), and by later experimental works he made the important contributions in this field. Between 1893 and 1897 he received recognition for the series of patents for various types of high frequency generators. Two particularly important patents which are related to wireless energy transmission he submitted on Set. 2, 1897(13,14). One of these patents (No. 645,576 under the title "Electrical Energy Transmission System") consists of detailed explanation of the energy transmission principle by means of extra-ordinary high voltages "of such characteristics and level which enable the current flow through the high elevation atmosphere between source location and remote location where the energy is received and used"(13). Tesla was persistently repeating that this energy transmission method is distinctly different from other transmission methods where the atmosphere properties are used under such conditions that it behaves as an excellent insulator. By "other" methods Tesla considers in the first place the electro-magnetic emissions Hertz(8) experimented with.
