Cap'n Refsmmat

Looks right to me.

Ah, so that was you. Well, it's not really important unless there were specific requests ("remove his posts or I sue").

The w17e is an LCD monitor, so I'd assume so. According to some Googling, LCDs do not emit radiation: http://hometheater.about.com/od/lcdtvfaqs/f/lcdfaq2.htm

Yeah, I looked into the possibility of adding to the dataset earlier today. I think it is possible, but it may take some time -- the file format is rather odd. It would at least be possible to fudge it a bit. I'm reasonably good with Python, and the code looks fairly easy to understand, so I might be able to pull it off. If I have some spare time I might try it. The other interesting question is "Why wasn't this temperature data included in the dataset?" Perhaps there's some other reason besides them not knowing it existed.

Assuming we don't mix reference frames, all photons should travel at exactly the same speed. (Also assuming they're traveling through the same medium.)

I wonder what would happen if you loaded this temperature data into the model. Would the results be accurate, or would there still be an anomaly? (Perhaps the "hole" in the data also affects the results of nearby areas in the model.) If you happen to know how long the Clear Climate Code version takes to run a simulation like this, and if custom data can be loaded in, I might be able to try this.

When you say "ignition system," I assume that means this isn't a simple compressed air cannon. What sort of propellant will you be using?

What kind of "hardware store-level technology"? I've been down to the Southwest Research Institute's air-cannon facility and seen some neat air cannons, but this looks to dwarf them.

Well, go talk to people in the departments. One thing I've learned by being in school is that professors love talking about their research and their field of work. Ask them what sort of research they do and you'll be lucky to get out of the office in an hour. As for the minor... you don't actually have to take all the classes required to get a minor, you know. You can just take as many as you can fit in, if you find them interesting and worthwhile. My academic program is great because I have 30 elective credit-hours to fill, and we're encouraged to branch out and take whatever other classes we find interesting. You shouldn't be afraid to do the same, even if it won't get you another minor.

I think Feynman is taking advantage of the fact that at arbitrarily small distances, any function looks linear. Does he present this as an actual proof of Stokes' Theorem or just as an explanation of why it works?

Hmm. I took vector calculus last semester, so I might be able to help, but I'm not familiar with how this is written: [math] \oint \vec{C} \cdot d\vec{s} = C_x(1) \Delta x + C_y(2)\Delta y -C_x(3) \Delta x - C_y(4)\Delta y [/math] Could you explain what [math]C_x(1)[/math] and so on represent?

Here on SFN we've all seen occasional debates about evolution. It's quite common for bacteria to be given as examples of evolution in action: how else could they evolve resistance to antibiotic drugs but through evolution? Of course, the anti-evolutionists respond that the resistant bacteria existed all along -- they just proliferate when the non-resistant bacteria are killed. No new attributes or powers are developed. It's just natural selection in action. Now there's finally good evidence to prove the anti-evolutionists wrong. An interesting article in Molecular Cell shows that antibiotic resistance is due to the action of the antibiotic: several kinds of antibiotics produce free radicals that damage bacterial DNA, causing mutations. Some of these mutations can produce resistance to different kinds of antibiotic, including ones not being used on the bacteria at the time. In other words, antibiotics cause rapid mutation in bacteria, which leads to resistance, even to antibiotics the bacteria has not been exposed to. Cool. The researchers suggest this research can be used to prevent this natural selection, stopping resistant bacteria from appearing. Reference: Molecular Cell, Volume 37, Issue 3, 12 February 2010, Pages 297-298. I don't know if you'll be able to follow the link above to get full text or not, as I'm at university and get university access.

I don't think you get what's being asked. Are the a, b, c, d and so on functions of x, or just constants? i.e. is [math]f^{(n)}(x) = a_n(x) f^{(n+1)}(x)[/math] or just [math]f^{(n)}(x) = a_n f^{(n+1)}(x)[/math]? ([math]f^{(n)}[/math] means the nth derivative of f.) Or, simpler still, does a have x in it?

crownedconquern is banned, so the insults don't need to continue.

Read the article Pangloss linked to.

Depends on what you want to achieve. .NET and PHP are very different; .NET provides a framework for programming Windows applications, whereas PHP is designed for web sites.

That's not that bad. Set up [imath]y = y_0 t + \frac{1}{2}at^2[/imath] with y being 0, [imath]y_0[/imath] being the initial height, and a being gravity. (Make sure you make it negative.)

Nah, that takes just as much effort as a thread, if not more. Here's what I'd do. Set up your equations for the distance fallen by the object. You'd have [imath]y=y_0 t + \frac{1}{2}at^2[/imath], where [imath]y_0[/imath] is the height of the tower. y would be 0, because the object ends up on the ground. Since y is 0 in both cases, you can set the two equations equal. One equation will use t, the other (for the object thrown down) can use [imath]\frac{1}{2}t[/imath]. Then solve.

I would leave out the final velocity altogether, as you say it's unnecessary. How did you arrive at the 6 s figure for time?

Why is the final velocity 0 m/s? When it hits the ground it'll be traveling at some large velocity downward. If you want to take into account the fact that it'll stop when it hits the ground, you'll have to calculate the acceleration it experiences when it hits, which depends on how soft the grass is, how rigid the object is, and so on. Best not to make the final velocity 0.

The bit about eBay, if true, lends it a bit of credibility though. I suppose we'll have to wait to see how it works to see if they have some clever new chemistry going on, or they're just creatively omitting information from their press releases.

I've thought about that. I don't know of any software that supports it, but it would be rather cool to be more flexible about organization.

As a hint for future reference, since search IDs don't last longer than a few hours, that's a search for "global warming" there.

On the other hand, there's my high school chemistry teacher, who is a 30-something-year-old married male who bodybuilds, who loved Twilight.

What are you talking about?