alternating current
n=5
a: Alternating current ~
b: a hand saw
What: "Direct current is like a chainsaw - the sharp bits travel in one direction doing work (slicing wood) and then return to their original location. The motion of the chain is constant.
...
Alternating current is like a hand saw - the sharp bits travel in one direction, then briefly stop, then travel in the opposite direction."
Useful?
Writer: Pentium100
LCC: TK
Where:
Date: Sep 30 2013 8:31 PM
# 3658 Critique Analogy
1 Way Vs 2 Way?
a: Alternating current ~
b: regular tide
What: "Direct current is a electric current that flows in one direction. That is to say that it travels around a circuit like the water in a river, never flowing backwards. On the other hand, alternating current is like a very regular tide. Flowing from nil up-to maximum in the positive, then flowing back to nil, and then flowing up-to maximum in the negative, then returning to nil again. This pattern is repeated forever."
Useful?
Writer: Not Stated
LCC: TK
Where:
Date: Sep 30 2013 8:34 PM
# 3659 Critique Analogy
Back And Forth It Goes
a: Alternating current ~
b: a locomotive travelling on a single line
What: "Alternating Current is like a locomotive travelling on a single line. It goes forward and backwards along that line in both directions.
A D.C. loco could only travel along the line in one direction and can not return."
Useful?
Writer: A welsh man
LCC: TX
Where:
Date: Sep 30 2013 8:37 PM
# 3660 Critique Analogy
Water Here Water There
a: Alternating current ~
b: the waves washing onto the lake's shore
What: "Alternating current is like the waves washing onto the lake's shore, and then washing away. Direct current is like a river, steadily moving in its predetermined course. When alternating current moves through a diode, the diode allows power through in one direction but blocks it in the other direction. In other words, the rectifier allows half the wave through, and is therefore called a half-wave rectifier. Picture a half-wave of water entering a river bed every few seconds, rather than a steady flow of water." See the rest in the link.
Useful?
Writer: Fred Decker
LCC: TK
Where:
Date: Sep 30 2013 8:40 PM
# 3661 Critique Analogy
A Discussion Of Dimmers
a: Alternating current ~
b: a soft pillow
What: "The normal alternating current is like a soft pillow. Chopped up, the current is more like a hard table. Strike a tuning fork on a pillow and you won't produce much noise, but it will resonate if you strike it on a table."
Useful?
Writer: Weightman
LCC: TK
Where:
Date: Sep 30 2013 8:45 PM
# 3662 Critique Analogy
METAMIA is a free database of analogy and metaphor. Anyone can contribute or search. The subject matter can be anything. Science is popular, but poetry is encouraged. The goal is to integrate our fluid muses with the stark literalism of a relational database. Metamia is like a girdle for your muses, a cognitive girdle.