Re: Relativity and delusion


"The Ghost In The Machine" <ewill@xxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:vbvml5-7q2.ln1@xxxxxxxxxxxxxxxxxxxxxxxxxx
| In sci.physics.relativity, Spaceman
| <spaceman@xxxxxxxxxxxxxxxxxxxxxxxxxx>
| wrote
| on Thu, 24 Jul 2008 13:44:34 -0400
| <F86dnUN61vMbIhXVnZ2dnUVZ_rjinZ2d@xxxxxxxxxxx>:
| > The Ghost In The Machine wrote:
| >> In sci.physics.relativity, Spaceman
| >> <spaceman@xxxxxxxxxxxxxxxxxxxxxxxxxx>
| >> wrote
| >> on Wed, 23 Jul 2008 17:06:41 -0400
| >> <fd2dncxb0pr3ABrVnZ2dnUVZ_srinZ2d@xxxxxxxxxxx>:
| >>> Dirk Van de moortel wrote:
| >>>> No, I don't think so either - there will always be a steady fresh
| >>>> supply of retiring engineers and highshool dropouts who learned
| >>>> to handle a square root.
| >>>> But don't loose too much sleep over it - if you can't stop it, try
| >>>> to enjoy it :-)
| >>>
| >>> Dirk,
| >>> What is the square root of -1?
| >>> How about -4?
| >>> Negative numbers can't have square roots huh?
| >>> :)
| >>>
| >>
| >> Not real square roots. The consideration of the solution
| >> of the equation x^2 + 1 = 0 led to an entire new class of
| >> numbers, namely imaginary and complex numbers.
| >
| > ???
| > x^2 + 1 does not equal 0.
|
| The intent of the problem is to find the value(s) of x
| such that the equation is satisfied.


(0, i) and (0,-i), there being two roots.

-i * -i = (-1)*i * (-1)*i = 1 * i^2
i^2 = -1 by definition. Does Spaceman understand "definition"?



|
| > Who the hell ever has sadi that it does?
| > Wow.. no wonder you guys are all screwed up.
| > If you are trying to make it equal 0 of course you
| > are going to have to make up "imaginary numbers"
|
| And that's exactly what happened.

http://people.bath.ac.uk/acpw20/Complexhistory.html



.

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