Bars representing 1/n shrink toward zero, illustrating why it seems the sum should settle down. The animation then groups terms as 1/3+1/4, 1/5+...+1/8, 1/9+...+1/16, showing each bracket totals at least 1/2. Since infinitely many such groups exist, the running total climbs without bound, proving the harmonic series diverges despite its terms vanishing. Useful for calculus students studying series convergence tests and building intuition beyond the 'terms go to zero' misconception.
16:9 · every frame verified for overlaps, spacing and edges before rendering
Bars of 1/n shrink to zero, yet grouping 1/3 + 1/4, 1/5 + ... + 1/8, 1/9 + ... + 1/16 shows each group is at least 1/2, so the sum grows without bound.