Originally posted by Spork99:
Originally posted by DrAchoo:
Originally posted by alexlky:
Originally posted by DrAchoo:
Originally posted by Spork99:
Originally posted by DrAchoo:
I'm curious what kind of pellet is shaped like that and is slightly bigger than a waterdrop? |
I think they're something homemade and/or fired from an airgun at low speed (relative to a real bullet fired from an actual firearm).
To really freeze a bullet in mid-flight, a flash duration on the order of a microsecond (or less) is required. That's not really possible with a typical xenon flash tube. That, and the odd shape lead me to my conclusion. |
That makes some sense to me. Of course, in the days of cloning, I got the idea that you could tie the bullet to a string and swing it down like a pendulum through the water drop then clone the string out. I'd think the image would look the same and one would think it would be much easier to obtain. But a low speed airgun of some sort makes sense too. |
The suppose bullet not travel straight on photo 14. Very possible it was swing by a turning wheel. The drop then could be accurately adjust to it path. |
It was photo 15 that made me think of the idea. I have no idea if it is true and I'd actually give the dude the benefit of the doubt, but since I don't have an airgun, if I did it, that's how I'd do it. :) |
As an example, here is a shot I made using a 0.5 microsecond flash (much faster than any camera flash), stopping a .22LR projectile. The velocity of the projectile is 1100-1200 ft/s. Despite the short duration of the light, there is some small amount of blur in the projectile's image.
Compare this to the images of the projectiles in the original link and it's pretty easy to see that the projectiles used there were moving at a much slower speed given that their flash duration was likely much longer than 0.5 microseconds and the lack of blur in the image. Now, also look at the projectile in image #15, it's totally frozen in space. There are no rifling marks from the grooves normally cut into a barrel to spin and thus stabilize the projectile. Then look at the shape of the projectile itself and it's a long cylinder with a much shorter rounded cone for a point...this is not typical for either a rifle or a pistol bullet. Usually, the straight cylinder portion is much shorter and the rounded taper is much longer.
This leads me to believe that this is a homemade projectile fired at a very low speed (maybe as low as 100-200 ft/sec) froma smooth bore airgun, probably homemade as well. I don't think that the projectile in image #14 is on a curved path, but rather is beginning to tumble due to the low speed. |
Great sharing! 0.5 micro seconds, wow! that's fantastic. It's quite obvious the projectile (photo 15) is a cut piece from round metal bar. Setup for water drop |
