PNP Transistor Unit Physics_Light & Optics Plug-in 120V AC blower sized

Plug-in 120V AC blower sized to feed a linear air track

Autoclavable polypropylene test tube stand holding six 25-mm tubes with six drying pins on the back

5-inch height for free-spinning compass and magnetometer demonstrations

and d2sp3 atoms for hybridization-and-geometry visualization

Hand-cranked cam turning against both a straight follower and a lever follower

PNP Transistor Unit Physics_Light & Optics Plug-in 120V AC blower sizedPNP transistor on a transparent base with 4mm color coded sockets and a printed circuit diagram, the complementary polarity counterpart to NPN for push pull and bias network demonstrations.