Rock WebcastRock Webcast's Knowledge & Entertainment Expo

Because radio waves travel at 186,000 miles per second and sound waves saunter at 700 miles per hour, a broadcast voice can be heard sooner 13,000 miles away than it can be heard at the back of the room in which it originated.

comedy funny pictures Humor iphone ipod medicine microsoft online games parody satire science tchnology technical video video games