Originally Posted by sydney
You are obviously spending too much time on the slopes and not enough in class. There is a simple concept here you geniuses don't seem to be able to get your heads around. And for what it's worth genius, light and sound are totally different in how they travel thru different mediums. Light travels in a vacum,and sound cannot. Bule clue:Check the speed of sound(vibrations) at sea level and 100,000'. Difference is in the density of the mdium.
I know they are different and actually said that if you read my post. You are still not getting the concept that there is way more to vibration transfer then just density. Metals have bonding in them which effects how everything happens. Also I would guess that speed and propogation are not the same so why does it matter where it travels the fastest. It is all about energy absorbtion. It is actually a huge part of ski design, every company has its gimich in order to try to sell more. Basically density is not the be all end all and I believe that was actually the point and the fact that the example orginally picked out was as inane as comparing light to sound.