Difference between revisions of "AA1-History"
Josef.Noll (Talk | contribs) (Created page with "=⌘The real researchers = {| right | * Michael Faraday (1791 - 1867), * James Clerk Maxwell (1831 - 1879) and * Heinrich Rudolf Hertz (1857...") |
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| + | =⌘TOC on AA1-History = | ||
| + | {{Building Networks TOC}} | ||
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=⌘The real researchers = | =⌘The real researchers = | ||
{| | {| | ||
| − | [[File:HeinrichHertz.png|400px | + | [[File:HeinrichHertz.png|400px]] |
| | | | ||
| − | * Michael Faraday (1791 - 1867), | + | * Michael Faraday (1791 - 1867), focussing on the static fields |
| − | * James Clerk Maxwell (1831 - 1879) and | + | * James Clerk Maxwell (1831 - 1879), establishing the Maxwell equations for the interaction of the electrical and the magnetic component of an electromagnetic wave |
| − | * Heinrich Rudolf Hertz (1857 | + | * Heinrich Rudolf Hertz (1857 - 1894) experimented the theory for the understanding of electromagnetic waves |
[Source:Magne Pettersen, Wikipedia] | [Source:Magne Pettersen, Wikipedia] | ||
| Line 11: | Line 14: | ||
=⌘Heinrich Hertz - The electromagnectic wave = | =⌘Heinrich Hertz - The electromagnectic wave = | ||
| − | [[File:HertzWaves.png|400px | + | [[File:HertzWaves.png|400px]] |
Hertz did not realise the practical importance of his experiments. He stated that, | Hertz did not realise the practical importance of his experiments. He stated that, | ||
"It's of no use whatsoever[...] this is just an experiment that proves Maestro Maxwell was right - we just have these mysterious electromagnetic waves that we cannot see with the naked eye. But they are there." [3] | "It's of no use whatsoever[...] this is just an experiment that proves Maestro Maxwell was right - we just have these mysterious electromagnetic waves that we cannot see with the naked eye. But they are there." [3] | ||
| Line 18: | Line 21: | ||
"Nothing, I guess." [3] | "Nothing, I guess." [3] | ||
| − | = | + | == Note == |
| − | [[File:MarconiCommunications.png|400px | + | The experiments, demonstrating the relation between the electrical and the magnetic component of the electromagnetic wave, was probably the most important discovery of Heinrich Hertz. |
| + | |||
| + | =⌘Inventor: Guglielmo Marconi = | ||
| + | [[File:MarconiCommunications.png|400px|Marconi watching associates raise kite antenna at St. John's, December, 1901]] | ||
Guglielmo Marconi (1874 - 1937) experimented with Hertz waves in 1894/1895 | Guglielmo Marconi (1874 - 1937) experimented with Hertz waves in 1894/1895 | ||
* used 50000 UK pound on a transatlantic experiment in 1901 | * used 50000 UK pound on a transatlantic experiment in 1901 | ||
| Line 26: | Line 32: | ||
[Source:Magne Pettersen, Wikipedia] | [Source:Magne Pettersen, Wikipedia] | ||
| + | == Note: Marconi == | ||
| + | The first experiment failed, as a storm took down the antenna, and Marconi got bankrupt. But he managed to establish new funds for the first transatlantic communication based on radio signals. Recommended reading https://en.wikipedia.org/wiki/Guglielmo_Marconi | ||
| + | |||
| + | =⌘Inventor: Antonio Meucci = | ||
| + | [[File:MeucciCommunications.png|400px|Drawing of phone communication]] | ||
| + | Antonio Meucci | ||
| + | * Invented the phone in 1856 | ||
| + | * transferred voice from one room to another one | ||
| + | * surveillance of an ill person | ||
| + | * registered patent in 1871 | ||
| + | ** failed to name "electromagnetics" | ||
| + | ** Graham Bell patented in 1876 | ||
| + | |||
| + | |||
| + | [Source: Sandra Meucci, "Antonio and the electric scream: The man who invented the telephone", Branden Books, 2010] | ||
=⌘The real researchers - Graham Bell= | =⌘The real researchers - Graham Bell= | ||
| − | [[File:BellRadio.png|400px | + | [[File:BellRadio.png|400px|link=http://en.wikipedia.org/wiki/File:Alexander_Graham_Bell.jpg]] |
* Graham Bell (1874 -1922) invented the phone,... | * Graham Bell (1874 -1922) invented the phone,... | ||
* but who invented also the mobile phone back in 1924? | * but who invented also the mobile phone back in 1924? | ||
Latest revision as of 10:08, 29 August 2018
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Contents
⌘TOC on AA1-History
⌘The real researchers
[Source:Magne Pettersen, Wikipedia] |
⌘Heinrich Hertz - The electromagnectic wave
Hertz did not realise the practical importance of his experiments. He stated that,
"It's of no use whatsoever[...] this is just an experiment that proves Maestro Maxwell was right - we just have these mysterious electromagnetic waves that we cannot see with the naked eye. But they are there." [3]
Asked about the ramifications of his discoveries, Hertz replied, "Nothing, I guess." [3]
Note
The experiments, demonstrating the relation between the electrical and the magnetic component of the electromagnetic wave, was probably the most important discovery of Heinrich Hertz.
⌘Inventor: Guglielmo Marconi
Guglielmo Marconi (1874 - 1937) experimented with Hertz waves in 1894/1895
- used 50000 UK pound on a transatlantic experiment in 1901
- brought electromagnetics to life
[Source:Magne Pettersen, Wikipedia]
Note: Marconi
The first experiment failed, as a storm took down the antenna, and Marconi got bankrupt. But he managed to establish new funds for the first transatlantic communication based on radio signals. Recommended reading https://en.wikipedia.org/wiki/Guglielmo_Marconi
⌘Inventor: Antonio Meucci
Antonio Meucci
- Invented the phone in 1856
- transferred voice from one room to another one
- surveillance of an ill person
- registered patent in 1871
- failed to name "electromagnetics"
- Graham Bell patented in 1876
[Source: Sandra Meucci, "Antonio and the electric scream: The man who invented the telephone", Branden Books, 2010]
⌘The real researchers - Graham Bell
- Graham Bell (1874 -1922) invented the phone,...
- but who invented also the mobile phone back in 1924?
Bell considered his most famous invention an intrusion on his real work as a scientist and refused to have a telephone in his study
[Source:Magne Pettersen, Wikipedia]
