Jolly Bulb with Attached Manometer, 3.15"

The Eisco Labs Jolly's Bulb is a stainless steel hollow sphere directly attached to a pressure gauge, designed for exploring the relationship between pressure and temperature for an ideal gas. The sphere can be approximated as fixed in volume across the temperature range typically accessible in the physics classroom; submerging it in liquids of various temperatures lets students measure the resulting pressure changes and verify Gay-Lussac's law. The bulb measures approximately 3.15" in diameter, the pressure gauge measures 3" in diameter, and the assembled apparatus stands 7.75" tall. Includes instructions, safety tips, and an experiment guide.