Ventilation Demonstration Apparatus, 8.7 x 6.5 x 4" Capacity_50mL which also mounts to bench

which also mounts to bench edges and boards of equal thickness

lets students compare how line density per unit length controls the spacing of the resulting interference pattern

Ninety-five-piece molecular model set with 53 atoms and 42 links spanning organic and inorganic chemistry

varying length isolating density as the single variable across materials

leaving inertia to drop the ball straight into the waiting receptacle below

Ventilation Demonstration Apparatus, 8.7 x 6.5 x 4" Capacity_50mL which also mounts to benchLarge format 8. 7 by 6. 5 by 4 inch ventilation apparatus modeling historic mine gallery airflow and domestic chimney convection through a candle driven hot air rise demonstration.