Economy Graphite Crystal Model Set Heat & Thermodynamics_Energy Transfer & Engines supplying the standard mid-range value

supplying the standard mid-range value used in the bulk of introductory Ohm's-law and voltage-divider investigations

and image-formation experiments

For restoring secure access to the UV sanitization chamber after a key is lost

labeled on a wall-mountable backboard

chemically resistant for collecting gases over mercury in pneumatic-trough experiments

Economy Graphite Crystal Model Set Heat & Thermodynamics_Energy Transfer & Engines supplying the standard mid-range valueEconomy format graphite crystal model showing the layered hexagonal structure and the weak interlayer bonds responsible for graphite's slippery, lubricating properties.