school starts in 5 days. i'm really not excited. this summer has been soooo great. now if only my sophomore can live up to the summer. that would be great...but heres to my friends new and old! lol. i feel like its New Year's! lol.
In other news, i've gotten addicted to a band called Falling up. they are totally awesome. I love what their "sounds like" section on Myspace says
that is so awesome. listen to them here.
if you go to the ocean during the night, the voices of people far away can be heard clearly. You may wonder, is it because it is quieter at night than in the daytime? However, it is only one of the reasons. Actually, sound transmits farther at night may be related to refraction of sound waves! First, sound is the vibration of air, and it is a kind of wave motion. The propagation of sound wave is faster in hot air and slower in cold air. Therefore regions of air at different temperatures have different refractive indices, just like media with different optical densities. When sound wave propagates in air whose temperature changes with altitude, refraction of air happens. Sound will move towards areas with lower temperatures. In the daytime, when the sun shines the earth, the air near the earth surface is hotter than the air above. Sound waves will be refracted to the sky. On the contrary, in the nighttime, the air near the surface is cooler and sound waves are refracted to the earth surface.
also check out the website that i worked some on for our panama trip. click here!
btw, we've had a lot more hits than what the counter says. i accidentally reset it at some point during the trip.