The crack at the end of this and other whips when correctly used, is actually a sonic boom, as the very end of the whip is moving faster than the speed of sound.

Goddamn I love a good ol'-fashioned melt-down, followed by an incoherent, spittle-flecked rant!

That said, I woulda been off that Boeing so fucking fast there would have been a sonic boom.

Sonic Boom!

so minimally that far... this was pretty good from wiki:

Shock waves form when the speed of a fluid changes by more than the speed of sound.[3] At the region where this occurs sound waves travelling against the flow reach a point where they cannot travel any further upstream and the pressure progressively builds in that region, and a high pressure shock wave rapidly forms.

Shock waves are not conventional sound waves; a shock wave takes the form of a very sharp change in the gas properties on the order of a few mean free paths (roughly micrometers at atmospheric conditions) in thickness. Shock waves in air are heard as a loud "crack" or "snap" noise. Over longer distances a shock wave can change from a nonlinear wave into a linear wave, degenerating into a conventional sound wave as it heats the air and loses energy. The sound wave is heard as the familiar "thud" or "thump" of a sonic boom, commonly created by the supersonic flight of aircraft.

>> ^MycroftHomlz:

You're Wrong Charlie, you get no lifetime supply of chocolate. They actually only said in the video magnets make it go up. They did not say it was a maglev train. These are entirely different animals. It is called evacuated tube because of a vacuum. Thanks for the physics lesson though.
>> ^shole:
as said in the video, the cars don't move by sucking it through a straw, but by magnetic levitation....



The tube contains a vacuum, meaning there's no air to push or pull you forward. It must use maglev propulsion as well. The lack of air allows you to go 6500km/h without burning up or causing sonic booms.

>> ^jmd:

wow, terminal velocity can create sonic booms?


If shaped and created the right way, yes. You just need to compensate for the flow of air on the object (since this thing is made to "slice" or "cut" through the air in the first place you can see why it might just end up doing what it did).

wow, terminal velocity can create sonic booms?

That pop at 6:10 is the sonic boom it makes while it is falling down.

SONIC BOOM! SONIC BOOM! HADOUKEN! SHORYUKEN! TATSUMAKISENPUKYAKU!

It sometimes bugs me when people assume a "sonic boom" only occurs when the aircraft passes into, and then out of, supersonic flight. When in fact, the boom is a pressure wave that continuously propogates along the flight path, more of a "sonic roar" and only a boom because YOU aren't moving.


(ps. this isn't a comment on anything people have said here, just anecdotal)

Is that a sonic boom around 3:08?

*dead

"Sonic Boom - Ext..."
This video is no longer available because the YouTube account associated with this video has been terminated due to multiple third-party notifications of copyright infringement from claimants including:

* Racingukcom
* Sony ATV Publishing

Sorry about that.

>> ^chicchorea:

dupeage?


Pretty sure it's dupage

Please don't be inclined to pull the trigger on my account.

I was headed to bed and...

You might look at "videos_newest_riot." Some of the footage is the same.

I am tiring of the duping...stress included...and I hate doing it to friends even more.

I guess I an old softie after all...soft in the head at least.
In reply to this comment by residue:
uh oh, I'll look for it. I couldn't find it originally but if anyone knows if a video is a dupe, it's you

In reply to this comment by chicchorea:
dupeage?