Faraday's Butterfly Net Electricity & Magnetism_Circuits and pith for stem anatomy

and pith for stem anatomy and plant tissue teaching

Reel of bare 18 SWG copper wire totaling roughly 80 feet by mass

mechanical-advantage

Acrylic bell-in-vacuum jar with an internal 4-6V DC electric bell that fades and falls silent as the enclosed air is removed

sized so that students can compare its uniform-curvature surface charge against sphere and cone partners in the conductor set

Faraday's Butterfly Net Electricity & Magnetism_Circuits and pith for stem anatomyDemonstrates that charge resides only on the outer surface of a conductor by inverting the charged net inside out and showing the charge transferring to the new outside layer.