Commentary on “3D bloodstain pattern analysis: Ballistic reconstruction of the trajectories of blood drops and determination of the centres of origin of the bloodstains” by Buck et al. [Forensic Sci. Int. 206 (2011) 22–28]

A flattened base is very different aerodynamically from a spherical one. [...]one should not expect blood droplets of all sizes to be spherical when they are projected horizontally under initially much more energetic conditions compared to that in free fall. [...]it should be obvious from his simple illustrations that the use of stain width to calculate drop volume, and ultimately its mass, is questionable at best.