Recent content by Frozen

Maybe this sounds mad, but does anyone think it would be possible to see wavelengths that are beyond visible light, maybe through genetic engineering or through other technology? There are many animals than can see infrared & UV. Wouldn't it be cool if we could see what radio waves look like?

Thank you for your replies, folks. Some very useful stuff here - I've 'liked' a lot of posts. Thank you, berkeman. And ogg, if we're going to be needlessly pedantic (do you find that speaking to people like that gets you far in life?), maybe care to explain this to me if "cancer is not a...

Hi everyone, I suffer from Delayed Sleep Phase Disorder: https://en.wikipedia.org/wiki/Delayed_sleep_phase_disorder I've been taking sleeping pills for it for years (without them, I'd never be up in time for work) but have recently become concerned about adverse consequences of long-term use...

NB: I don't want anyone to do this for me, in case anyone thinks I'm trying to cheat. I just want someone to point me in the right direction because I honestly don't know where to begin figuring this out.

Homework Statement In a closed system 0.4kg of gas at 374K is expanded isothermally and reversibly from 1MPa pressure to 300kPa. Given that Cv = 718j/kg and R = 287j/kg, determine the work done.[/B]Homework Equations Not sure? I guess W = p*V? The Attempt at a Solution I honestly don't know...