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Monday, 18 April 2011

X-ray machine in my wardrobe

Physics revision somehow wound up with me on the 'bang goes the theory' website on the BBC.. It's kind of on topic so it doesn't totally count as procrastination right?
Anyway I found this: http://www.open.ac.uk/openlearn/science-maths-technology/science/biology/order-your-free-set-genome-fridge-magnets which is super cool - I can't wait for mine to arrive!

So then I started looking for free physics stuff and I ended up on an article describing how sellotape can cause x- rays! If you slowly undo sellotape in the dark you see a fluorescent blue glow! So guess who ended up inside a wardrobe because she couldn't wait for night? Yea, that might've been me.. but guess who ended up slightly entangled and bitterly disappointed, three times? Also me... I might've been doing it wrong but I'm pretty sure there aren't many ways of peeling off sellotape... I had to give up after three times because I was getting tired of rewinding sellotape! I had never mind, I'll try again with another roll - I'm used to Physics experiments not working!

Anyway this is what is actually happening when you unroll sellotape (in a wardrobe or out of a wardrobe...). The adhesive becomes positively charged and the rest of the rolll is negatively charged. You transfer energy to the charge when you pull it away. The negative charge will be attracted to the positively charged adhesive and will move through the air towards it. It transfers the energy to the air and the air molecules glow! An American researcher, Carlos Camara, did this experiment in a vacuum (I'm pretty sure I must have one of those somewhere in my wardrobe..) and produced x-rays powerful enough to take an x-ray image of a hand!! I watched a youtube video of this and it literally was just a normal roll of sellotape!

Needless to say - I have a new favourite website! I want to say I'll try a new experiment everyday but I'm not sure i can cope with daily disappointments!! I'll try everyday till one works?!

Ps. it wasn't the wardrobe with Brian in ;)

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