Introducing Definition and 61 Threads

Concord Consortium, an educational non-profit, offers a free simulation program called Molecular Workbench, which can be used to learn physics, chemistry and biology through cool simulations. The main page to download the software is: http://workbench.concord.org/modeler/index.html...

I propse a new scalable weapon of mass destruction with potentially unlimited destructive power. I call it the Quantum Bomb. It consists of a 1000 Kg Bose-Einstein condensate. Pick your favorite atom. Hydrogen perhaps for a big fusion explosion? To explode the bomb, you let it "warm...

- The game proceeds by rounds. At the start of each round, X is some mystery individual. A round begins by the latest winner (or me for the first round) attributing one property to X. Ex: X is dead. or X is in my car. or X is a dead president of the USA. - A property must apply to more...

Monkey see, mokey do. 1st poster: X is green. 2nd poster: X is native to Florida. 3rd poster: X is a reptile. 4th poster: X is not a mammal. This breaks a rule: You must actually narrow the options. 5th poster: X's jaws can exert thousands pounds of pressure per square inch when closing...

Hey guys… and girls! I was just wondering if anyone knew of any good books that introduce the concepts and reasoning behind mathematical proofs, starting from the beginners level. (In high school my teachers did not emphasize proofs.) I would like this specifically to help me for first year...

Hi I'm looking for a guide to introduce muyself in the study of compact and non compact Lie algebras. Please take a minute to signal me some bibliography al the respect. Thank very much Guillom

The arrow of time is a most common example of an overall direction in physics, although Newtonian, relativistic and quantum physics do not derive a preferred symmetry. If chaos also fails here, is there any alternative mathematical description of nature that allows a representation of a...

Please go to this post for help with the current version of LaTeX used at Physics Forums. https://www.physicsforums.com/help/latexhelp/ Note: while the thread that follows has become outdated, many of the examples it contains are still relevant. Physicsforums.com is proud to introduce the...

Any engineering major at any engineering school in the US must take a course entitled Introduction to Engineering Design (IED), or something similar. Right now, I am teaching that course at a local college. I think it would be useful for students to have a thread in which information on...

Hi all, I wonder what is the best way to introduce logarithms when you're teaching. My "approach #1" is the one I consider the most natural: You introduce exponential functions as f(x) = bx, and ask what is the derivative. It turns out df/dx = lim(h->0) (bh-1)/h bx. Now, actually ln(b)...

Figured this forum was as good as any for making a formal introduction since I'm a mechanical engineer with some aerospace background and a computer science/engineering hobby. I'm happy Greg gave me the opportunity to moderate this forum. Its something I've never done before but always had...