Date: Thu, 10 Nov 2011 23:48:11

Author: --- Erich Burton

Subject: Re: Visual accelerometer?


If you limit your acceleration to a horizontal plane, a 2D liquid
accelerometer might work. Either a simple trough or a suspended
ping pong ball in an inverted flask. Works OK for rotation, but not
for free fall.

How about if you replace the string attached to the ping pong ball
with a spring?

On Thu, Nov 10, 2011 at 11:19 PM, Paul Nord wrote:
> I've been thinking about making a video with an accelerometer in the shot.
> It would be nice to have some simple reference to indicate that the camera
> is in an accelerated reference frame. The first idea was the idealized mass
> in the center of a cube attached by 6 springs. But I don't think that's a
> practical build since it would be rather touchy; it would oscillate, and
> probably couldn't be designed to show a large range of accelerations.


Erich Burton 3-2602
Boston University Physics Department