Presentation

[Lord_Tigersloth]

I am doing a presentation on anything in physics of my choice for my A level physics class. I was wondering if any of you would have any suggestions?Cheers

[PhysMachine]

What is an A level physics class and what is your presentation supposed to be on?

[Lord_Tigersloth]

It is year 12 of school, after high school in the american system I think... Literally, it can be anything of my choice within physics.

[geodesic]

I did a similar thing for my Year 13 research project, on superfluids. I found quite a lot of interesting stuff on the Internet about superfluids, and its mostly reasonably easy to explain without too much maths. Plus, there a few nice pictures.

[Lord_Tigersloth]

Superfluids?

[geodesic]

When you cool He-3 or 4 down to a couple of K, they turn to fluids, but the fluids have some interesting properties - frictionless flow, very high adhesion to surfaces, quantum vorticing. That's all I can remember off the top of my head, but there's loads more out there.

[Lord_Tigersloth]

What is quantum vorticing? Thanks for the idea, I think that I will look into it, it sounds really interesting.

[geodesic]

Quantum vorticing is a property of rotating superfluids. Due to a component of the flow of superfluid having to be constant, vortices or whirlpools appear in the superfluid, in a regular array, with the number of vortices dependent upon the speed of rotation.
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=22135
This is one of the articles I used in my research. I by no means claim to understand most of it, but I think there was some useful stuff in there.
http://ffden-2.phys.uaf.edu/212_fall2003.web.dir/Rodney_Guritz%20Folder/properties.htm
Another site I used as the starting point for my research - it should give you some ideas about what to search on.

[Lord_Tigersloth]

Thanks man, it is really useful. :D