Saturday, August 25, 2007

What a sonic boom looks like!





this what a sonic boom looks like? When an airplane travels at a speed faster than sound, density waves of sound emitted by the plane cannot precede the plane, and so accumulate in a cone behind the plane. When this shock wave passes, a listener hears all at once the sound emitted over a longer period: a sonic boom. As a plane accelerates to just break the sound barrier, however, an unusual cloud might form. The origin of this cloud is still debated. A leading theory is that a drop in air pressure at the plane described by the Prandtl-Glauert Singularity occurs so that moist air condenses there to form water droplets. Above, an F/A-18 Hornet was photographed just as it broke the sound barrier. Large meteors and the space shuttle frequently produce audible sonic booms before they are slowed below sound speed by the Earth's atmosphere.

4 comments:

Trevor Record said...

Hmm, well it is pretty cool looking regardless of how it got there.

Rob said...

I thought so, didnt really think if a sonic boom has a visual aspect to it, thougth it was all sound.!!!!

drips of paint said...

wow, what an egg.....I'll come back to read explanation when I have more time...

I like this post..

Rob said...

A sonic egg, like that.