Recent content by KeithLucas

I've been reading a lot of hype about Sonny White and his attempts to look for Alcubierre warp bubbles. If objects do in fact non-locally travel at de facto superluminal speeds, how can these objects be observed to be traveling at such speeds? Wouldn't the observer just see the light outside of...

Thanks, I'll run a SPICE model to get it!

I'm looking for the threshold voltage Vtn, the MOSFET transconductance parameter kn and the channel length modulation parameter for MOSFET 6 on the CD4007. Where can I look these values up?

Which ones are in series with no junctions in between? I've posted the original circuit in one attachment, but another attachment has my attempt where I thought I solved everything in series.

Homework Statement I'm trying to find the equivalent capacitance for a circuit, but I keep getting stuck. Homework Equations C(parallel)=C1+C2+...Cn C(series)={(1/C1)+(1/C2)+(1/C3)+...(1/Cn)}^-1 The Attempt at a Solution See the first penciled attachment.

I've uploaded a picture that's of admittedly very poor quality, but I think it does the job. I'm trying to use the algebraic relationships to demonstrate the trigonometric addition/subtraction theorem. Click on the thumbnail to view the picture.

The complex exponential function use is fine, but the theorem doesn't fit what I meant by Algebra. By Algebra, I mean, without using limits or geometry other than the pythagorean identities I gave above. Euler's formula is only derived from using limits and differentiation. Maybe I need to...

Hello all, I was wondering if someone has ever found a purely algebraic proof for the addition/subtraction theorems of trigonometry, mainly sin(a+b)=sin(a)cos(b)+sin(b)cos(a). Given a right triangle: Let x be one of the perpendicular legs and let the other leg be composed of two parts, y1...