US$ 145.00
four-chamber stomach
Glass convex mirror at 100mm diameter and 150mm focal length
Illuminated solar system model with a socket-lit sun
Rotary-knob resistance substitution board offering twelve discrete values from 33 ohms to 10M ohms with 4mm lead connections
Laplace Law Demonstration Apparatus Capacity_50mL four-chamber stomachAluminium rail Laplace apparatus with a marked mobile bar that moves under 2. 5A of current, illustrating how current direction and field together produce force.
US$ 145.00
US$ 883.23
US$ 615.42
US$ 17.95