2007-04-01 16:59:39 · 4 answers · asked by Hakim A 1 in Science & Mathematics ➔ Physics
In real life none, but there are a lot in physcics. For some of them see.
http://mathforum.org/kb/thread.jspa?threadID=40244&messageID=137081
2007-04-02 01:33:50 · answer #1 · answered by meg 7 · 0⤊ 2⤋
There are numerous examples: for instance in electrodynamic waves the frequency is expressed as a complex number, the real part deals with the oscillation of the wave and the imaginary part deals with the dissipation of the wave. The two quantities are related and ignoring the imaginary part will give you unphysical solutions.
In math you can use complex integration to integrate real functions with ease that you could not normally integrate.
2007-04-02 13:27:32 · answer #2 · answered by sparrowhawk 4 · 0⤊ 0⤋
There are various-----
The most common is the alternating current.
When you connect a capacitor to the alternating voltages, a current will flow. However, the power will be zero (not like dc in which power = current x voltage). The power in this case is imaginary.
2007-04-02 00:03:56 · answer #3 · answered by dipakrashmi 4 · 0⤊ 0⤋
I have only used them in electronics in real life.
2007-04-02 00:02:56 · answer #4 · answered by shadouse 6 · 0⤊ 0⤋