Recent content by Daniel1992

OK, thanks for clearing that up.

So are there circumstances when ΔxΔp ≥ h-bar is correct? Say when you are not dealing with standard deviations?

I have been going through my Physics textbook to brush up on my Quantum Mechanics before starting my next QM course next academic year and the Heisenberg uncertainty principle for position and momentum is written as ΔxΔp ≥ h-bar when I thought it was ΔxΔp ≥ (h-bar)/2. Other sources say it is...

How does a BSc in Physics compare to a MPhys when it comes to career prospects? I don't want to do a Phd so I have no reason to do a MPhys fro that reason alone. I live in the UK by the way.

At the bottom of the following website are the 4 equations that I am using for a double pendulum simulation. http://scienceworld.wolfram.com/physics/DoublePendulum.html The equation for C2 has the variables P1 and P2 and I can't work out what they are.:confused: Is it a typo and they are...

I found the error. Turns out I missed a * when multiplying :-|

I get this error message Subscript indices must either be real positive integers or logicals. Error in doubleODE (line 14) dYdt(2) = l1*(m1 + m2)*Y(4) - l2*m2*Y(3)*cos(Y(1) - Y(2))/... I am having trouble working out what is causing the problem. Any advice? Thanks

Homework Statement A small ball is placed at the edge of the top step of a flight of steps. Each step has identical dimensions. The ball is kicked horizontally, perpendicular to the edge of the top step. On its first and second bounces it lands exactly in the middle of the first and second...

Hi, I am trying to create displacement time series graphs of a double bar pendulum using Matlab. Am I correct in assuming that if I use the ode45 solver to integrate the equations below I can plot displacement time series graphs? Are these the correct coupled first order ODEs to use...

I can't work it out :(

A part from the first and last y values the odd ones are multiplied by 4 and the even are multiplied by 2.

I am trying to program Simpson's Rule in Fortran I=(1/3)*h*(y0 + 4*y1 + 2*y2 + 4*y3 + 2*y4 + ... 2*yn-2 + 4*yn-1 + yn) n=100 (number of strips) I have generated the y values but I don't know how to get Fortran to follow the pattern in the brackets after h to add up the y values. Any...

Well that was abvious :rolleyes: forgot that '**' is used to creates powers. Thanks for that :)

Homework Statement I get the follwing error message in the FORTRAN program I am trying to code. P(i)=(1/(sigma*sqrt(2*Pi)))*e^(-(x-xbar)^2/(2*sigma^2)) ----------------------------1 Error: Invalid character in name at (1) I assume this means there is something it doesn't like about...

I am studying for my undergraduate Astrophysics module and the lectures notes say that that all abundances are measured relative, in terms of H = 12.00 by mass or number of atoms. Is this correct? I thought it was all based off of Carbon = 12. Am I missing something?