Diff — History of Electricity

{{infobox

| title = History of electricity

| image = franklin.jpg

| caption = Benjamin Franklin, 1767 — the man who named + and − (public domain)

| span = amber static → the world grid

| name_origin = Greek *ēlektron* — "amber," the sap that sparks

| milestones = 1600 Gilbert · 1745 Leyden jar · 1752 Franklin · 1800 Volta · 1820 Ørsted · 1831 Faraday · 1865 Maxwell · 1882 Pearl Street · 1897 the electron · 1947 the transistor

| culminates_in = the relay, the tube, the chip — and the [[Z3|computer]]

}}

The **history of electricity** runs from a rubbed lump of amber to the largest machine ever built — the planetary power grid — and then to something stranger: electricity taught to *compute*. It is one of history's tidier arcs: phenomenon, instrument, theory, industry, and finally intelligence, each stage impossible until the one before it existed.

```fact The word itself is a fossil

**Electricity** comes from the Greek *ēlektron* — **amber**. The Greeks noticed that amber, rubbed with fur, pulls feathers and chaff. The entire modern world is named after fossilized tree sap that crackles.

```

## The amber spark

For two thousand years, the amber effect was a parlor curiosity. Then **William Gilbert** — physician to Elizabeth I — published *De Magnete* (1600), the first true experimental science book in English, distinguishing magnetism from the attraction of rubbed objects he called *electrics*. The word stuck to the phenomenon.

The eighteenth century made it a spectacle: **von Guericke**'s sulfur-globe generator, **Gray** conducting charge through hemp threads and a suspended boy, and finally the **Leyden jar** (1745) — the first way to *store* charge — which could knock a man off his feet and did, routinely, in salons across Europe.

**Benjamin Franklin** did what Franklin did: he made it rigorous. His experiments established the single-fluid theory and gave the world the **+ and − conventions still on your batteries**. The 1752 kite experiment — proving lightning *is* electricity — made him the most famous scientist alive; it also killed the next man to try it, Georg Richmann of St. Petersburg, struck dead in 1753. Franklin's practical return: the **lightning rod**, arguably the first time a science directly and measurably saved lives and buildings.

## The frog and the pile

[[File:volta-pile-petitjournal.jpg|right|320px|Volta demonstrates his pile to Napoleon — *Le Petit Journal* (public domain)]]

In the 1780s **Luigi Galvani** noticed dead frog legs twitching when touched by dissimilar metals and announced "animal electricity" — life, literally sparking. **Alessandro Volta** disagreed: the electricity wasn't in the frog; it was in the *metals*, with the moist tissue as conductor. The argument produced the century's greatest consolation prize: trying to prove Galvani wrong, Volta stacked alternating zinc and copper discs separated by brine-soaked cloth and, in **1800**, announced the **voltaic pile** — the first battery, the first source of *continuous* electric current, and the device that opened the laboratory era of electricity. He demonstrated it to Napoleon in 1801; the unit we all use is his name.

```fact A debate that invented a device

Galvani was partly right — nerves do run on electrochemistry — and Volta was mostly right about the pile. The argument's real winner was everyone: the frog debate produced the battery.

```

## Electricity and magnetism become one thing

For centuries the two forces were filed separately — amber attraction here, lodestone attraction there. **Ørsted** fused them by accident in 1820: a current-carrying wire twitched a compass needle. Within weeks **Ampère** had turned it into mathematics; within a decade **Faraday** had turned it into machines.

[[File:faraday.jpg|left|280px|Michael Faraday — the bookbinder's apprentice who invented the electric age (public domain)]]

**Michael Faraday** is the patron saint of this history: no university, no mathematics beyond arithmetic, the son of a blacksmith — and the greatest experimentalist who ever lived. In 1821 he made the first electric motor (a wire spinning around a magnet); in 1831, **electromagnetic induction** — motion making current — the generator, and with it every power station since. He invented the very idea of a **field**: force as something existing in the space itself, invisible but real.

```note The probably-apocryphal quote

The famous exchange — Gladstone asking "what use is it?" and Faraday replying "what use is a newborn baby?" — appears in no contemporary source and is probably legend. It survives anyway, because it is the correct answer to a question that never stops being asked of basic science.

```

In 1865 **Maxwell** closed the loop mathematically: his equations showed electricity, magnetism, and *light* are one phenomenon — electromagnetic waves traveling at a calculable speed that turned out to be light's own. Optics had been electricity all along.

## The Victorian internet

The telegraph was electricity's first consumer product: **Wheatstone and Cooke** (1837) wired British railways; **Morse** (1844) sent "What hath God wrought" from Washington to Baltimore and — equally important — invented the code that made his system the standard. By 1866 a working **transatlantic cable** put London and New York a few minutes apart. Stock prices, news, wars, and love letters began moving at light speed. The nineteenth century built the internet twice.

## Power and light

Arc lamps lit lighthouses from the 1860s; the streetlight version was blinding, buzzy, and perfect for public squares. The real prize was a lamp for the home: **Joseph Swan** demonstrated a working incandescent bulb in England — and **Thomas Edison**, developing independently, produced a practical bulb *and the entire system around it* in 1879: the lamp, the socket, the meter, the dynamo, the parallel wiring. Edison's real invention was **the electric utility**. **Pearl Street Station** (1882), the world's first central power plant, lit a square mile of Manhattan — and Edison's DC architecture was already obsolete.

[[File:edison.jpg|left|270px|Edison — the bulb mattered less than the system (public domain)]]

## The war of the currents

DC's flaw was physics: it couldn't travel — voltage dropped within a mile. **Nikola Tesla's** alternating-current polyphase system, sold to **Westinghouse**, could transform to high voltage, cross a continent, and transform back down. Edison defended DC brutally — pamphlets, electrocuted animals, the association of AC with the electric chair. AC won anyway, decisively, at **Niagara Falls in 1896**, when Tesla's system lit Buffalo from the cataract's power.

```warn The elephant myth

The story that Edison electrocuted Topsy the elephant to discredit AC is **a myth** — Topsy was killed in 1903, a decade after the current war ended, by her amusement-park owners, filmed by an Edison *camera crew* (cameras were his other product). Edison wasn't there. The myth persists because it *sounds* like the Edison of the smear campaign — but honesty is the house rule: credit him the system, not the elephant.

```

[[File:tesla.jpg|right|260px|Nikola Tesla, 1896 — the year Niagara went AC (public domain)]]

## The electron and the vacuum

Electricity's last classical gift was discovering its own particle: **J.J. Thomson** found the **electron** in 1897 — cathode rays were *matter*, subatomic, universal. Then **Fleming's valve** (1904) and **de Forest's triode** (1906) turned the evacuated tube into something unprecedented: a device that could *switch and amplify* an electric signal. Radio followed, then telephony across oceans, then television — and somewhere in that lineage, quietly, the switch that would become the computer.

## Solid state — the transistor century

Vacuum tubes were hot, fragile, and power-hungry — the relays' only heir, until 1947, when **Bardeen, Brattain, and Shockley** at Bell Labs built the **transistor**: a switch of pure crystal, no vacuum, no heat, no filament. **Kilby and Noyce** put whole circuits on one chip (1958–59); **Federico Faggin**'s team at Intel put a whole computer on one (the 4004, 1971). From there it's Moore's law all the way down to the device you are reading this on — billions of switches, each one Faraday's descendant.

### The priority table — who "invented" it, honestly

| Invention | Credited | The fuller story |

|---|---|---|

| Incandescent bulb | Edison | Swan the same year, a dozen experimenters earlier — Edison's real invention was the utility |

| Radio | Marconi | Tesla's patents, Lodge's demonstrations, Popov's receiver |

| Telephone | Bell | Gray filed the same day; Meucci showed a working phone years earlier |

| AC induction motor | Tesla | Ferraris invented it independently the same year |

| Telegraph | Morse | Wheatstone–Cooke was first; Morse won with the code |

| Transistor | Shockley | Bardeen & Brattain built the point-contact first; Shockley wrote himself into the center |

```chart From spark to computer

process am  "amber\nstatic"

process bt  "battery\n1800"

process em  "electromagnetism\n1820–65"

process gr  "generator\n+ grid"

process tb  "tube · relay\n1900s"

process tr  "transistor\n1947"

process cp  "the computer"

am -> bt -> em -> gr -> tb -> tr -> cp

```

## The grid — the largest machine

Electrification redrew civilization's outline: Niagara's power, national grids, rural electrification, elevators and steel frames making cities vertical, refrigeration remaking food, the telephone and the tube remaking time itself. Today the grid is arguably humanity's single largest artifact — a machine spanning continents, kept in balance second by second — and it is the reason the rest of this wiki exists.

```alb The thread to ALB

Every computer is a descendant of the devices on this page: the relay ([[Z3]]'s 2,600 of them), the vacuum tube (ENIAC's 18,000), the transistor (everything since). Electricity switching electricity — that's the whole trick. [[AdaLogic BASIC]] compiles to a language of voltage: the story of electricity is, in the end, the story of where programs live.

```

## See also

- [[History of Science]] · [[History of Mathematics]] — the twin timelines

- [[Z3]] · [[Konrad Zuse]] — the relay machine

- [[Manchester Baby]] · [[EDSAC]] — the electronic machines

- [[History of Programming]] · [[AdaLogic BASIC]]

- [[Punched card]] · [[Jacquard Loom]] — the pre-electric technologies of control

[[Category:Science]]

[[Category:History]]

[[Category:Hardware]]