[meteorite-list] Fake Norway rock

[Jim Wooddell]

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/