This website uses cookies to ensure you get the best experience on our website. Privacy Policy OK

Warning! This learning object uses Adobe Flash and your browser does not support Flash. To view this content you will either need to install and/or enable flash in your web browser or upgrade your web browser.

Click Here for instructions to enable Flash.

Stain Measurement & Calculating Angles of Impact

By

In this learning object the student will learn how to measure a stain and calculate angles of impact. Determining the angle of impact for bloodstains takes advantage of the trigonometric functions (Sine function). A mathematical relationship exists between the width and length of an elliptical bloodstain which allows for the calculation of the angle of the impact for the original spherical drop of blood. Given well formed stains we can accurately measure the width and length by simply dividing the stain along it’s major and minor axis. The opposite halves would be generally equal to each other which aids in establishing the impact angle.

You may also like

Creative Commons Attribution-NonCommercial 4.0 International License.

Learn more about the license »