Anthony's Textbook of Anatomy & Physiology, 19th or 20th Edition (manual) and any related materials. Please let me know if you know a source or have one to sell. Thanks!
I'm still needing some concise info re the balloon popping. Apparently it's an old fairground scam - under-inflated balloons and blunt darts. I just need to supply a simple (one sentence) explanation to explain why lack of pressure in the balloon makes it harder to pop. Something about the skin of the balloon?
cheers! >> >> 1. Why is it easier to pop a fully-inflated balloon than a >> saggy one? >> >> 2. What would be the result on a roller coaster ride if the >> coaster had too much weight z(ie too many cars)? >> >> Many thanks to anyone who takes the time to respond.
It's hard to pop a balloon before you blow it up. The pressure inside the balloon has to exceed the "burst pressure". If the balloon is under inflated, the dart (which doesn't have a very pointy tip) bounces off instead of causing the pressure inside to be too much. Pressure is force/area. The small balloon already has a smaller area so needs a much larger force to make it pop.
Bluh... where are all the balloon experts?
Zodea
On 12/27/12, Jill wrote: > Thanks so much for your response. The rollercoaster in the story > has too many cars attached and travels around a 360 degree loop > etc. > > I'm still needing some concise info re the balloon popping. > Apparently it's an old fairground scam - under-inflated balloons > and blunt darts. I just need to supply a simple (one sentence) > explanation to explain why lack of pressure in the balloon makes > it harder to pop. Something about the skin of the balloon? > > cheers! >>> >>> 1. Why is it easier to pop a fully-inflated balloon than a >>> saggy one? >>> >>> 2. What would be the result on a roller coaster ride if the >>> coaster had too much weight z(ie too many cars)? >>> >>> Many thanks to anyone who takes the time to respond.
Some fascinating, jaw-dropping images and information. The concept of spider decoys is especially fascinating! (It's a bit scary to learn that spiders can be that clever.)