Optimal track length for msd measurements

<p>When using <a class="wikilink" href="/brownian_motion/">brownian motion</a> to characterize particles, it is important to always take a look at the <a class="wikilink" href="/sources_of_error_in_measuring_diffusion_coefficient_through_nanoparticle_tracking_analysis/">Sources of error in measuring diffusion coefficient through nanoparticle tracking analysis</a>. Especially for <a class="wikilink" href="/nanoparticle_tracking_analysis/">nanoparticle tracking analysis</a> (or <a class="wikilink" href="/nta/">NTA</a>), the accuracy of the method is related to the track length that can be recorded. </p> <p>Longer tracks allow to calculate the MSD with higher precision, and thus the fitting process is more accurate. However, longer tracks can suffer from long-term stability issues. This leads to the other side of the problem, which is estimating the <a class="wikilink" href="/optimal_number_of_fitting_points_for_msd_measurements/">optimal number of fitting points for MSD measurements</a>.</p>