US$ 129.95
sized for weighing
exposing the triangular rotor's epitrochoidal motion with a lamp-lit ignition point
and structural isomerism in introductory chemistry
5 by 4-inch ventilation apparatus modeling historic mine-gallery airflow and domestic chimney convection through a candle-driven hot-air-rise demonstration
Mounted on a precision base
Push/Pull Balance, 250g/2.5N Material_Zinc sized for weighingTwo hundred fifty gram push pull balance in an acrylic tubular body, calibrated to 2. 5 newtons for measuring small forces during spring law and tension force classroom investigations.
US$ 129.95
US$ 149.95
US$ 119.95
US$ 139.95
US$ 129.95
US$ 129.95
US$ 129.95
US$ 59.95
US$ 14.90
US$ 59.95