Institute of Forensic Medicine, University of Bern, Bern, Switzerland.
Forensic Sci Int. 2012 Jun 10;219(1-3):205-7. doi: 10.1016/j.forsciint.2012.01.005. Epub 2012 Jan 23.
When analysing blood spatters, traces often occur which regarding the collision angle, cannot be allocated to any supposed centre of origin. Drops following highly curved (ballistic) trajectories usually form these types of traces. The reconstruction of such trajectories requires knowledge of the mass, the diameter (of which approximations are known) and the velocity of the blood drops. This article provides an upper range of the velocity in relation to the diameter of the blood drops based on physical laws. This is very helpful in analysing ballistic trajectories.
在分析血溅时，经常会出现一些痕迹，这些痕迹根据碰撞角度，无法分配到任何假定的起源中心。通常，沿着高度弯曲（弹道）轨迹的液滴会形成这些类型的痕迹。重建这种轨迹需要了解血液滴的质量、直径（已知近似值）和速度。本文根据物理定律提供了与血液滴直径相关的速度上限，这对于分析弹道轨迹非常有帮助。
