Regulated Dual-Output Digital Power Supply, 12V 5A AC + 0-12V 5A DC Pack Size_8 and three low-friction nylon wheels

and three low-friction nylon wheels for straight-line momentum experiments

Ceramic center on each 5 x 5-inch iron wire gauze square spreads Bunsen flame heat beneath beakers and flasks

these concavity microscope slides hold liquid samples for hanging-drop preparations and observation of specimens in suspension

illustrating linear thermal expansion

Regulated Dual-Output Digital Power Supply, 12V 5A AC + 0-12V 5A DC Pack Size_8 and three low-friction nylon wheelsRegulated dual output power supply showing independent LED readouts of voltage and current, pairing a fixed 12V AC line with a continuously variable 0 to 12V DC line at 5A each.