Interstitial Site Sizes of FCC & BCC

Time links to different sections of this video are further down in the description.

This video is the second part in The 3 Common Metallic Structure series.
Here we find out the maximum sizes of atoms that can fit into the various interstitial sites of these two, all without inducing a strain on the surrounding matrix.

Here are time-links to the various points in this video:
Section 1: Intro - 0:03
Section 2: FCC Interstitial Sites - 1:00
Section 3: FCC Octa - 1:47
Section 4: FCC Tetra - 2:52
Section 5: FCC Site Comparisons - 3:48
Section 6: BCC Interstitials - 3:56
Section 7: BCC Octa - 4:15
Section 8: BCC Tetra - 5:00
Section 9: Site Comparisons - 5:59
Section 10: Implications - 6:15
Section 11: Interstitial Site Locations - 6:42