User talk:Evans82

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Welcome!

Hello, Evans82, and welcome to Wikipedia! Thank you for your contributions. I hope you like the place and decide to stay. Here are some pages that you might find helpful:

I hope you enjoy editing here and being a Wikipedian! Please sign your name on talk pages using four tildes (~~~~); this will automatically produce your name and the date. If you need help, check out Wikipedia:Questions, ask me on my talk page, or ask your question and then place {{helpme}} after the question on your talk page. Again, welcome!  - Alex valavanis 11:00, 24 April 2007 (UTC)

Contents

[edit] WikiProject Physics

See WP:PHYSICS for how to edit Physics articles properly. Probably worth joining the project too. - Alex valavanis 11:00, 24 April 2007 (UTC)

[edit] WikiProject Electronics

Same applies here... WP:ELEC - Alex valavanis 11:08, 24 April 2007 (UTC)

[edit] Image uploading

See this for details... WP:UPIMG - Alex valavanis 11:59, 24 April 2007 (UTC)

[edit] Quantum Cascade Laser

Are the rate equations the wrong way round? Shouldn't the first one be dn3/dt and the last dn1/dt? Also, I think the rate equation could be specified for a general state as:

\frac{\mathrm{d}n_i}{\mathrm{d}t} = \sum\limits_{j=1}^N\frac{n_j}{\tau_{ji}}-n_i\sum\limits_{j=1}^N\frac{1}{\tau_{ij}}+I(\delta_{i0}-\delta_{iN}),

rather than repeating it for each of the three states. If the maths looks dodgy, we can talk it through on Tuesday. - Alex valavanis 01:25, 5 May 2007 (UTC)

[edit] Image:3qw-qcl.png

Do you still have the xmgrace image file? If so, it would be better if you saved the image as SVG and uploaded the new version to http://commons.wikimedia.org Ta, Papa November 08:42, 25 August 2007 (UTC)