[meteorite-list] Fake Norway rock

[Jim Wooddell]

Correction  *falling at a rate of about 1000'/min...
On 4/10/2014 4:38 AM, Jim Wooddell wrote:
> What I find interesting are the comments made on such things at 
> trajectory of the object.  As the camera is falling, it is not falling 
> vertically.  It is falling at a rate of about 1000 ft per second and 
> gliding too.  Because the camera was mounted on the helmet, it's view 
> is whatever way the guy was facing.
> So, if you take an object, like a baseball and hang it from a string 
> 30 feet in the air and then step back 40' and take a picture of it 
> while standing on a 10 foot ladder, it's going to look small.
> Then if you take the ladder move it 10 feet closer to the ball and 
> lower the ball from 30 feet to 25 feet and then climb the ladder but 
> take the picture at 3/4 the height of the first picture, you will see 
> the ball is bigger and the angle will be different making it look like 
> it is moving on some arc or curve (in a composite of the two 
> pictures), when all it did was drop vertically.  You keep doing that 
> and pretty soon you and the ball will meet and the ball will look 
> bigger than it actually is.  So the ball, with a perfectly vertical 
> decent, will not appear to have a vertical decent.  One can actually 
> just draw this out with a pencil and paper without the need for a camera!
>
> Jim
>


-- 
Jim Wooddell
jim.wooddell at suddenlink.net
http://pages.suddenlink.net/chondrule/