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- Morse code (33777 bytes)
2: ...unications technologies, the use of Morse code is now largely obsolete, although it is still employed ...
13: ...wn as Railroad or [[American Morse code]], and is now very rarely used.
17: ...e receiving end of the transmission wire. The technological limits of the time made it impossible to p...
21: ...g and end of dots and dashes, meaning that it was no longer necessary to use the tape.
23: ... dash as "dah", and a dot as "dit". When a dit is not the final element of a character, its sound is s... - Lightning (33113 bytes)
12: ...g stretching out; he then brought his hand close enough to the key and a spark jumped the gap. The rai...
16: ... open, parts of his clothes singed, the engraver knocked out, the doorframe of the room split, and the...
22: ...duce enough ice crystals usually fail to produce enough charge separation to cause lightning.
26: ...trees and tall buildings. If the e-field is high enough a discharge can initiate from the ground. Thi...
28: ...anic eruptions]]{{ref|usgs_hvo}}<sup>,</sup>{{ref|noaa_galgunggung}}, or can be caused by violent fore... - Capacitor (29664 bytes)
16: ...re usually expressed in microfarads (µF), nanofarads (nF) or picofarads (pF).
18: ... [[permittivity]] of the [[dielectric]] (that is, non-[[electrical conduction|conducting]]) substance ...
45: ...pes. Adjustable versions have stability issues. Another figure of merit for analog components is stab...
52: ...P0 means that the graph is flat and the device is not affected by temperature changes.
54: ... Typical 3300 pF to 0.33 µF, 10%. Good for non-critical coupling, timing applications. Subject ... - Electricity (13894 bytes)
1: ...l effects are discussed under [[electrical phenomenon]] and [[electromagnetism]].
6: ...ir]], and that if they rubbed the amber for long enough, they could even get a [[spark]] to jump. This...
8: ...o have been used for [[electroplating]]. There is no firm documentary evidence to indicate what the ob...
12: ...ty. If Franklin did fly a kite in a storm, he did not do it the way it is often described (as it would...
14: ...iscovery, the [[Chinese]] word for "lightning" is now also used to mean "eletricity". - Magnet (13875 bytes)
6: ...net or an [[electromagnet]]. Permanent magnets do not rely upon outside influences to generate their f...
12: ... magnetic. Everyday experience shows that this is not the case.
14: ... molecules. Without long range ordering, there is no net magnetic field because the magnetic moment of...
22: ... cancel one another. If all electrons are paired, no net magnetic field will be generated.
24: ... those unpaired electrons must interact with one another over long ranges such that they are all orien... - Leyden jar (3953 bytes)
14: ...me discovery. Musschenbroek made the storage jar known to the scientific world, hence the jar was name...
16: ...ation has been abandoned, Maxwell's correction to Ampere's law remains valid (a changing electric field pr...
20: ... that the energy is stored on the dielectric, and not the plates:
24: ...apart, simply touching the cup does not give you enough surface area to discharge it. The conductors p...
26: ...fluid (like oil) instead of air, the effect would no longer be present.
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