Period

15 results for: coils

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The Deluge VII. Coils of Lightening and rain; Black chalk. Circa 1514-16. By Leonardo da Vinci
ARP23A40_315

The Deluge VII. Coils of Lightening and rain; Blac...

John Henry Pepper demonstrating the giant induction coil at the Polytechnic Institute, London, before Princesses Louise and Beatrice
ARP23A18_002

John Henry Pepper demonstrating the giant inductio...

High voltage x-ray equipment, x-ray tube on right, Ruhmkorff high voltage coil on left
ARP23A15_260

High voltage x-ray equipment, x-ray tube on right,...

Heinrich Daniel Ruhmkorff
ARP23A12_073

Heinrich Daniel Ruhmkorff

Heinrich Hertz's oscillator, right, showing path of wave reflected from metal surface at left
ARP23A18_250

Heinrich Hertz's oscillator, right, showing path o...

Heinrich Hertz's oscillator
ARP23A18_249

Heinrich Hertz's oscillator

The first TRANSFORMER: The iron ring is wound with two separate coils of wire, A and B. Both coils are wired in sections. Current through A from a battery induces a current in B. Engraving after a ske...
ARP17A30_477

The first TRANSFORMER: The iron ring is wound with...

Decorated mace head. Late Predynastic (Naqada III), 3300-3100 BC, Egypt
ARP17A07_328

Decorated mace head. Late Predynastic (Naqada III)...

Jade bust of Quetzalcoatl Aztec
ARP11A02_362

Jade bust of Quetzalcoatl Aztec

Jade bust of Quetzalcoatl Aztec
ARP11A02_361

Jade bust of Quetzalcoatl Aztec

Bell Telephone Company
ARP07114_010796P

Bell Telephone Company

Faraday's experiment
ARP07103_460000304

Faraday's experiment

Joseph Wilson Swan
ARP07103_460000350

Joseph Wilson Swan

X-ray apparatus powered by a Ruhmkorff coil being used to take an X-ray of a hand
ARP07103_460000366

X-ray apparatus powered by a Ruhmkorff coil being ...

Guglielmo Marconi radio pioneer
ARP07093_390000082

Guglielmo Marconi radio pioneer