Today, I'd like to recommend a video website from the Midwest Forensic Resource Center (Midwest Forensics Resource Center) in the United States. URL: the interface of the https://alvideo.ameslab.gov/archive/bpa-videos/

video page is very... Simple, but rich in content. Here you can see many experimental videos of blood dripping, spattering and smearing under different conditions, such as blood dripping from different heights and angles, coughing up, being trampled and spattered, and so on.

these experimental videos are all references for blood morphological analysis. At the crime scene, criminal investigators will speculate how they are produced through the shape and direction of the blood stains, and restore the original appearance of the crime scene. In order to make the analysis more accurate, simulation experiments under various conditions are needed. On the one hand, the simulation experiment has research value, on the other hand, it can also be used for teachers and students to learn.

even if you don't know the details of blood analysis, these videos are interesting just to see and feel. Maybe it can also be used as a reference for painting.

A few videos are randomly selected below, and you can feel them first. There are a lot of video resources on the original website. If you are interested, you can check it directly in the URL at the beginning.

A bloody finger scratches plexiglass:

A baseball bat hits a pool of blood (below which is a sponge covered with tape)

1 ml of blood drips from the height of 175cm onto the cardboard:

finally, there is a question that everyone may be concerned about: what kind of blood is this kind of experiment done with? As far as the information I have seen, a lot of it uses anticoagulant animal blood, such as horse blood. There are also some blood substitutes for simulation experiments. Unlike medical artificial blood, this substitute mainly requires density, viscosity and surface tension to be as close to real human blood as possible.

A bloody finger scratches plexiglass:

A baseball bat hits a pool of blood (below which is a sponge covered with tape)

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1 ml of blood drips from the height of 175cm onto the cardboard:

finally, there is a question that everyone may be concerned about: what kind of blood is this kind of experiment done with? As far as the information I have seen, a lot of it uses anticoagulant animal blood, such as horse blood. There are also some blood substitutes for simulation experiments. Unlike medical artificial blood, this substitute mainly requires density, viscosity and surface tension to be as close to real human blood as possible.